Docker(六)[核心技术-网络管理]

其他 2020-04-15 11:28:18 阅读次数: 0

Docker-核心技术-网络管理

简介

  1. 端口映射
  2. 网络模式

1.端口映射

默认情况下，容器和宿主机之间网络是隔离的，可以通过端口映射的方式，将容器中的端口，映射到宿主机的某个端口上。从而实现通过宿主机的ip+port的方式来访问容器里的内容。

1.Docker的端口映射

映射方式 参数 备注
随机映射 -P 大写P
指定映射 -p 宿主机IP:端口号:容器端口号 小写p，且要指定宿主机IP:port:docker容器port

生产场景一般不使用随机映射，但是随机映射的好处就是由docker分配，端口不会冲突；不管哪种映射都会有所消耗，影响性能，因为涉及到映射的操作。

2.端口随机映射

1.获取帮助

docker run --help


Usage:  docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

Run a command in a new container

Options:
      --add-host list                  Add a custom host-to-IP mapping (host:ip)
  -a, --attach list                    Attach to STDIN, STDOUT or STDERR
      --blkio-weight uint16            Block IO (relative weight), between 10 and 1000, or 0 to disable (default 0)
      --blkio-weight-device list       Block IO weight (relative device weight) (default [])
      --cap-add list                   Add Linux capabilities
      --cap-drop list                  Drop Linux capabilities
      --cgroup-parent string           Optional parent cgroup for the container
      --cidfile string                 Write the container ID to the file
      --cpu-period int                 Limit CPU CFS (Completely Fair Scheduler) period
      --cpu-quota int                  Limit CPU CFS (Completely Fair Scheduler) quota
      --cpu-rt-period int              Limit CPU real-time period in microseconds
      --cpu-rt-runtime int             Limit CPU real-time runtime in microseconds
  -c, --cpu-shares int                 CPU shares (relative weight)
      --cpus decimal                   Number of CPUs
      --cpuset-cpus string             CPUs in which to allow execution (0-3, 0,1)
      --cpuset-mems string             MEMs in which to allow execution (0-3, 0,1)
  -d, --detach                         Run container in background and print container ID
      --detach-keys string             Override the key sequence for detaching a container
      --device list                    Add a host device to the container
      --device-cgroup-rule list        Add a rule to the cgroup allowed devices list
      --device-read-bps list           Limit read rate (bytes per second) from a device (default [])
      --device-read-iops list          Limit read rate (IO per second) from a device (default [])
      --device-write-bps list          Limit write rate (bytes per second) to a device (default [])
      --device-write-iops list         Limit write rate (IO per second) to a device (default [])
      --disable-content-trust          Skip image verification (default true)
      --dns list                       Set custom DNS servers
      --dns-option list                Set DNS options
      --dns-search list                Set custom DNS search domains
      --domainname string              Container NIS domain name
      --entrypoint string              Overwrite the default ENTRYPOINT of the image
  -e, --env list                       Set environment variables
      --env-file list                  Read in a file of environment variables
      --expose list                    Expose a port or a range of ports
      --gpus gpu-request               GPU devices to add to the container ('all' to pass all GPUs)
      --group-add list                 Add additional groups to join
      --health-cmd string              Command to run to check health
      --health-interval duration       Time between running the check (ms|s|m|h) (default 0s)
      --health-retries int             Consecutive failures needed to report unhealthy
      --health-start-period duration   Start period for the container to initialize before starting health-retries countdown (ms|s|m|h) (default 0s)
      --health-timeout duration        Maximum time to allow one check to run (ms|s|m|h) (default 0s)
      --help                           Print usage
  -h, --hostname string                Container host name
      --init                           Run an init inside the container that forwards signals and reaps processes
  -i, --interactive                    Keep STDIN open even if not attached
      --ip string                      IPv4 address (e.g., 172.30.100.104)
      --ip6 string                     IPv6 address (e.g., 2001:db8::33)
      --ipc string                     IPC mode to use
      --isolation string               Container isolation technology
      --kernel-memory bytes            Kernel memory limit
  -l, --label list                     Set meta data on a container
      --label-file list                Read in a line delimited file of labels
      --link list                      Add link to another container
      --link-local-ip list             Container IPv4/IPv6 link-local addresses
      --log-driver string              Logging driver for the container
      --log-opt list                   Log driver options
      --mac-address string             Container MAC address (e.g., 92:d0:c6:0a:29:33)
  -m, --memory bytes                   Memory limit
      --memory-reservation bytes       Memory soft limit
      --memory-swap bytes              Swap limit equal to memory plus swap: '-1' to enable unlimited swap
      --memory-swappiness int          Tune container memory swappiness (0 to 100) (default -1)
      --mount mount                    Attach a filesystem mount to the container
      --name string                    Assign a name to the container
      --network network                Connect a container to a network
      --network-alias list             Add network-scoped alias for the container
      --no-healthcheck                 Disable any container-specified HEALTHCHECK
      --oom-kill-disable               Disable OOM Killer
      --oom-score-adj int              Tune host's OOM preferences (-1000 to 1000)
      --pid string                     PID namespace to use
      --pids-limit int                 Tune container pids limit (set -1 for unlimited)
      --privileged                     Give extended privileges to this container
  -p, --publish list                   Publish a container's port(s) to the host
  -P, --publish-all                    Publish all exposed ports to random ports
      --read-only                      Mount the container's root filesystem as read only
      --restart string                 Restart policy to apply when a container exits (default "no")
      --rm                             Automatically remove the container when it exits
      --runtime string                 Runtime to use for this container
      --security-opt list              Security Options
      --shm-size bytes                 Size of /dev/shm
      --sig-proxy                      Proxy received signals to the process (default true)
      --stop-signal string             Signal to stop a container (default "SIGTERM")
      --stop-timeout int               Timeout (in seconds) to stop a container
      --storage-opt list               Storage driver options for the container
      --sysctl map                     Sysctl options (default map[])
      --tmpfs list                     Mount a tmpfs directory
  -t, --tty                            Allocate a pseudo-TTY
      --ulimit ulimit                  Ulimit options (default [])
  -u, --user string                    Username or UID (format: <name|uid>[:<group|gid>])
      --userns string                  User namespace to use
      --uts string                     UTS namespace to use
  -v, --volume list                    Bind mount a volume
      --volume-driver string           Optional volume driver for the container
      --volumes-from list              Mount volumes from the specified container(s)
  -w, --workdir string                 Working directory inside the container

run相关参数具体说明详见：

https://docs.docker.com/engine/reference/commandline/run/

2.命令格式

1.默认随机端口映射

 docker run -d -P [镜像名称]

例：
1.获取Nginx镜像

docker pull nginx

2.守护进程方式启动一个普通的nginx镜像的容器

docker run -d  nginx

docker ps

在这里插入图片描述
3.查看宿主机端口映射情况

netstat -tnulp

(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN      -
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN      -
tcp6       0      0 :::22                   :::*                    LISTEN      -
tcp6       0      0 ::1:631                 :::*                    LISTEN      -
udp        0      0 127.0.0.53:53           0.0.0.0:*                           -
udp        0      0 0.0.0.0:631             0.0.0.0:*                           -
udp        0      0 0.0.0.0:44157           0.0.0.0:*                           -
udp        0      0 0.0.0.0:5353            0.0.0.0:*                           -
udp6       0      0 :::48168                :::*                                -
udp6       0      0 :::5353                 :::*                                -

4.守护进程方式启动一个默认随机映射的nginx镜像的容器

docker run -d -P nginx && docker ps

在这里插入图片描述

Ports指示端口映射0.0.0.0:32768->80/tcp

5.再次查看宿主机80端口的映射情况

netstat -tnulp

在这里插入图片描述

宿主机的32768被映射到容器的80端口

6.获取宿主机IP信息

ifconfig

docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        inet6 fe80::42:5fff:fe9e:daa2  prefixlen 64  scopeid 0x20<link>
        ether 02:42:5f:9e:da:a2  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 17  bytes 1708 (1.7 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.234.62  netmask 255.255.255.0  broadcast 192.168.234.255
        inet6 fe80::20c:29ff:fe1e:a361  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:1e:a3:61  txqueuelen 1000  (Ethernet)
        RX packets 947448  bytes 1224885881 (1.2 GB)
        RX errors 57  dropped 70  overruns 0  frame 0
        TX packets 509055  bytes 180614621 (180.6 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 3231  bytes 279047 (279.0 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3231  bytes 279047 (279.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth2556e5a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::4cc0:bdff:fe42:bfc1  prefixlen 64  scopeid 0x20<link>
        ether 4e:c0:bd:42:bf:c1  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 29  bytes 3413 (3.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth330c413: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::9c08:b7ff:fed3:7a65  prefixlen 64  scopeid 0x20<link>
        ether 9e:08:b7:d3:7a:65  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 31  bytes 3590 (3.5 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth353b303: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::4410:a5ff:fef6:61a2  prefixlen 64  scopeid 0x20<link>
        ether 46:10:a5:f6:61:a2  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 38  bytes 4208 (4.2 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

vethbfd3ef0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::2c01:e7ff:fe21:493e  prefixlen 64  scopeid 0x20<link>
        ether 2e:01:e7:21:49:3e  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 47  bytes 5086 (5.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33：

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.234.62  netmask 255.255.255.0  broadcast 192.168.234.255
        inet6 fe80::20c:29ff:fe1e:a361  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:1e:a3:61  txqueuelen 1000  (Ethernet)
        RX packets 947448  bytes 1224885881 (1.2 GB)
        RX errors 57  dropped 70  overruns 0  frame 0
        TX packets 509055  bytes 180614621 (180.6 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000

7.使用浏览器进行访问

浏览器输入的格式是： docker容器宿主机的ip : 容器映射的端口

http://192.168.234.62:32768/

在这里插入图片描述

-P 自动绑定所有对外提供服务的容器端口，映射的端口将会从没有使用的端口池中自动随机选择，
但是如果连续启动多个容器的话，则下一个容器的端口默认是当前容器占用端口号+1

docker run -d -P nginx 
docker run -d -P nginx
docker run -d -P nginx
netstat -tnulp

在这里插入图片描述

2.指定主机IP随机端口映射

指定主机随机端口映射其实就是把【指定映射】的【宿主机的端口号】省略来实现，所以使用小写的p。

docker run -d -p [宿主机ip]::[容器端口] --name [容器名称][镜像名称]

例：

docker run -d -p 192.168.234.62::80 --name nginx-wyf nginx && docker ps

在这里插入图片描述

3.指定端口映射

1.获取帮助

docker run --help


Usage:  docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

Run a command in a new container

Options:
      --add-host list                  Add a custom host-to-IP mapping (host:ip)
  -a, --attach list                    Attach to STDIN, STDOUT or STDERR
      --blkio-weight uint16            Block IO (relative weight), between 10 and 1000, or 0 to disable (default 0)
      --blkio-weight-device list       Block IO weight (relative device weight) (default [])
      --cap-add list                   Add Linux capabilities
      --cap-drop list                  Drop Linux capabilities
      --cgroup-parent string           Optional parent cgroup for the container
      --cidfile string                 Write the container ID to the file
      --cpu-period int                 Limit CPU CFS (Completely Fair Scheduler) period
      --cpu-quota int                  Limit CPU CFS (Completely Fair Scheduler) quota
      --cpu-rt-period int              Limit CPU real-time period in microseconds
      --cpu-rt-runtime int             Limit CPU real-time runtime in microseconds
  -c, --cpu-shares int                 CPU shares (relative weight)
      --cpus decimal                   Number of CPUs
      --cpuset-cpus string             CPUs in which to allow execution (0-3, 0,1)
      --cpuset-mems string             MEMs in which to allow execution (0-3, 0,1)
  -d, --detach                         Run container in background and print container ID
      --detach-keys string             Override the key sequence for detaching a container
      --device list                    Add a host device to the container
      --device-cgroup-rule list        Add a rule to the cgroup allowed devices list
      --device-read-bps list           Limit read rate (bytes per second) from a device (default [])
      --device-read-iops list          Limit read rate (IO per second) from a device (default [])
      --device-write-bps list          Limit write rate (bytes per second) to a device (default [])
      --device-write-iops list         Limit write rate (IO per second) to a device (default [])
      --disable-content-trust          Skip image verification (default true)
      --dns list                       Set custom DNS servers
      --dns-option list                Set DNS options
      --dns-search list                Set custom DNS search domains
      --domainname string              Container NIS domain name
      --entrypoint string              Overwrite the default ENTRYPOINT of the image
  -e, --env list                       Set environment variables
      --env-file list                  Read in a file of environment variables
      --expose list                    Expose a port or a range of ports
      --gpus gpu-request               GPU devices to add to the container ('all' to pass all GPUs)
      --group-add list                 Add additional groups to join
      --health-cmd string              Command to run to check health
      --health-interval duration       Time between running the check (ms|s|m|h) (default 0s)
      --health-retries int             Consecutive failures needed to report unhealthy
      --health-start-period duration   Start period for the container to initialize before starting health-retries countdown (ms|s|m|h) (default 0s)
      --health-timeout duration        Maximum time to allow one check to run (ms|s|m|h) (default 0s)
      --help                           Print usage
  -h, --hostname string                Container host name
      --init                           Run an init inside the container that forwards signals and reaps processes
  -i, --interactive                    Keep STDIN open even if not attached
      --ip string                      IPv4 address (e.g., 172.30.100.104)
      --ip6 string                     IPv6 address (e.g., 2001:db8::33)
      --ipc string                     IPC mode to use
      --isolation string               Container isolation technology
      --kernel-memory bytes            Kernel memory limit
  -l, --label list                     Set meta data on a container
      --label-file list                Read in a line delimited file of labels
      --link list                      Add link to another container
      --link-local-ip list             Container IPv4/IPv6 link-local addresses
      --log-driver string              Logging driver for the container
      --log-opt list                   Log driver options
      --mac-address string             Container MAC address (e.g., 92:d0:c6:0a:29:33)
  -m, --memory bytes                   Memory limit
      --memory-reservation bytes       Memory soft limit
      --memory-swap bytes              Swap limit equal to memory plus swap: '-1' to enable unlimited swap
      --memory-swappiness int          Tune container memory swappiness (0 to 100) (default -1)
      --mount mount                    Attach a filesystem mount to the container
      --name string                    Assign a name to the container
      --network network                Connect a container to a network
      --network-alias list             Add network-scoped alias for the container
      --no-healthcheck                 Disable any container-specified HEALTHCHECK
      --oom-kill-disable               Disable OOM Killer
      --oom-score-adj int              Tune host's OOM preferences (-1000 to 1000)
      --pid string                     PID namespace to use
      --pids-limit int                 Tune container pids limit (set -1 for unlimited)
      --privileged                     Give extended privileges to this container
  -p, --publish list                   Publish a container's port(s) to the host
  -P, --publish-all                    Publish all exposed ports to random ports
      --read-only                      Mount the container's root filesystem as read only
      --restart string                 Restart policy to apply when a container exits (default "no")
      --rm                             Automatically remove the container when it exits
      --runtime string                 Runtime to use for this container
      --security-opt list              Security Options
      --shm-size bytes                 Size of /dev/shm
      --sig-proxy                      Proxy received signals to the process (default true)
      --stop-signal string             Signal to stop a container (default "SIGTERM")
      --stop-timeout int               Timeout (in seconds) to stop a container
      --storage-opt list               Storage driver options for the container
      --sysctl map                     Sysctl options (default map[])
      --tmpfs list                     Mount a tmpfs directory
  -t, --tty                            Allocate a pseudo-TTY
      --ulimit ulimit                  Ulimit options (default [])
  -u, --user string                    Username or UID (format: <name|uid>[:<group|gid>])
      --userns string                  User namespace to use
      --uts string                     UTS namespace to use
  -v, --volume list                    Bind mount a volume
      --volume-driver string           Optional volume driver for the container
      --volumes-from list              Mount volumes from the specified container(s)
  -w, --workdir string                 Working directory inside the container

run相关参数具体说明详见：

https://docs.docker.com/engine/reference/commandline/run/

2.命令格式

1.指定单端口映射

docker run -d -p [宿主机ip]:[宿主机端口]:[容器端口] --name [容器名字][镜像名称]

如果不指定宿主机ip的话，默认使用 0.0.0.0，
例：
1.给定容器一个指定的访问端口8989【docker容器的80端口映射到宿主机的8989端口】

docker run -d -p 192.168.234.62:8989:80 --name nginx-wyf-1 nginx

docker ps

在这里插入图片描述
2.通过查看容器的详细信息查看容器IP

docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' a8320c759fe2

在这里插入图片描述
3.查看容器端口映射

docker ps

在这里插入图片描述

2.指定多端口映射

docker run -d -p [宿主机端口1]:[容器端口1]  -p [宿主机端口2]:[容器端口2] --name [容器名称][镜像名称]

例：
1.给定容器一个指定的访问端口9998【docker容器的443端口映射到宿主机的8888端口】和9999【docker容器的80端口映射到宿主机的9999端口】

docker run -d -p 8888:443 -p 9999:80 --name nginx-wyf-2 nginx && docker ps

在这里插入图片描述

2.网络管理基础

1.network

1.获取帮助

docker network --help

Usage:  docker network COMMAND

Manage networks

Commands:
  connect     Connect a container to a network
  create      Create a network
  disconnect  Disconnect a container from a network
  inspect     Display detailed information on one or more networks
  ls          List networks
  prune       Remove all unused networks
  rm          Remove one or more networks

Run 'docker network COMMAND --help' for more information on a command.
指令 说明
connect 将一个容器连接到一个网络
create 创建一个网络
disconnect 从网络断开一个容器
inspect 在一个或多个网络上显示详细信息
ls 网络列表
prune 删除所有未使用的网络
rm 删除一个或多个网络

network相关参数具体说明详见：

https://docs.docker.com/engine/reference/commandline/network/

2.命令格式

1.查看当前主机网络

docker network ls

NETWORK ID          NAME                DRIVER              SCOPE
8e8b24ce3a07        bridge              bridge              local
59f27d5cdcbc        host                host                local
26dd69b9aac8        none                null                local

在这里插入图片描述

标题 说明
NETWORK ID 网络ID
NAME 名称
DRIVER 驱动
SCOPE 范围

2.查看bridge的网络内部信息

docker network inspect bridge

[
    {
        "Name": "bridge",
        "Id": "8e8b24ce3a07518de595c060d35c61dc9e8f6f87024c8c2e6a7b8fe193ec2ef6",
        "Created": "2020-04-14T11:06:14.379221259+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": null,
            "Config": [
                {
                    "Subnet": "172.17.0.0/16",
                    "Gateway": "172.17.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {
            "1d37e6d9f116c195370ce094ce444c043284bed9a810c208d1bb2fe6d256f727": {
                "Name": "hardcore_bartik",
                "EndpointID": "6237af5462c08e4ad7c394ba2d8ae41c254ccb7a6d3f68d3a75dec3cbaab07b6",
                "MacAddress": "02:42:ac:11:00:05",
                "IPv4Address": "172.17.0.5/16",
                "IPv6Address": ""
            },
            "340605f1190c42b6cc1573bdad7c6cbce1ba7aa899ff5826fab8299fca2f4a62": {
                "Name": "nginx-wyf",
                "EndpointID": "1874b6d042166b76a056a3db7cba838159d7238cd0b312b8e1d542ab72ba6445",
                "MacAddress": "02:42:ac:11:00:09",
                "IPv4Address": "172.17.0.9/16",
                "IPv6Address": ""
            },
            "3d392914e276d51f48bcb3bb74e83de67f74b85ab5424b220e0e520fb0110b8e": {
                "Name": "vf-ubunt-1",
                "EndpointID": "7b9f4797449d8558b7522f4c15a7f11565f383c90125b55ef7107f432f5a02ee",
                "MacAddress": "02:42:ac:11:00:02",
                "IPv4Address": "172.17.0.2/16",
                "IPv6Address": ""
            },
            "60decfc922ce9d3fa55640778c77e4fa6e404f0793d5d30fb1a8410747a48514": {
                "Name": "stoic_mirzakhani",
                "EndpointID": "e027dc97e599f336584d9515e26c3c2ca828e6381c1fb4f348fc68cb023f3301",
                "MacAddress": "02:42:ac:11:00:06",
                "IPv4Address": "172.17.0.6/16",
                "IPv6Address": ""
            },
            "799ceb41a562017b8193725e6a8eea9eb3ff04cd25b34868223064323ed3c31c": {
                "Name": "vf-ubunt-3",
                "EndpointID": "8f938c41878e768a791074defb2fbcf0bcd3742f5dc93309a99f45d9449a63d1",
                "MacAddress": "02:42:ac:11:00:03",
                "IPv4Address": "172.17.0.3/16",
                "IPv6Address": ""
            },
            "86a2c1ff3da35673ff2359119e31663fcda63e39ebe9b47ca8bb6d9034911ae8": {
                "Name": "condescending_spence",
                "EndpointID": "ed23cf85167c62149cbd23a7593f679594c48ae7cac4da402dfa2d233cef8f49",
                "MacAddress": "02:42:ac:11:00:07",
                "IPv4Address": "172.17.0.7/16",
                "IPv6Address": ""
            },
            "a2334430a3f284a9f64a71f99fef4e9cbb60e40e8f4d393d99450830e2f92aca": {
                "Name": "ecstatic_euler",
                "EndpointID": "d8bc6b072bcdb5ff22d51198169aacf36e0032475568c298f88d5e960fad3868",
                "MacAddress": "02:42:ac:11:00:04",
                "IPv4Address": "172.17.0.4/16",
                "IPv6Address": ""
            },
            "a8320c759fe277788e19c9435a7a102ef6e52792ae403717af3e6ea8700868ad": {
                "Name": "nginx-wyf-1",
                "EndpointID": "5668b42b4c3a4718ace725862e560c6f2a729a8dca0d8e6c7120fa2888dbb276",
                "MacAddress": "02:42:ac:11:00:0a",
                "IPv4Address": "172.17.0.10/16",
                "IPv6Address": ""
            },
            "b2b295d86c505d3d603b7b9b18c26c01980f952e6ddf616d4a084ba5b94d3964": {
                "Name": "sweet_elgamal",
                "EndpointID": "ab8ead7abf43416c4b3cada548893b70dc338f110291ac0acd368a18b8cd0d09",
                "MacAddress": "02:42:ac:11:00:08",
                "IPv4Address": "172.17.0.8/16",
                "IPv6Address": ""
            },
            "fda95bab83df3af6dc806100e2e275b47e3ed86b3847e6f6787a0fde9d1d0d78": {
                "Name": "nginx-wyf-2",
                "EndpointID": "443ade95bf68e9f28b1e450fea4751963bd82e4005b253c237db5b9a10398f12",
                "MacAddress": "02:42:ac:11:00:0b",
                "IPv4Address": "172.17.0.11/16",
                "IPv6Address": ""
            }
        },
        "Options": {
            "com.docker.network.bridge.default_bridge": "true",
            "com.docker.network.bridge.enable_icc": "true",
            "com.docker.network.bridge.enable_ip_masquerade": "true",
            "com.docker.network.bridge.host_binding_ipv4": "0.0.0.0",
            "com.docker.network.bridge.name": "docker0",
            "com.docker.network.driver.mtu": "1500"
        },
        "Labels": {}
    }
]

2.inspect

1.获取帮助

docker inspect --help

Usage:  docker inspect [OPTIONS] NAME|ID [NAME|ID...]

Return low-level information on Docker objects

Options:
  -f, --format string   Format the output using the given Go template
  -s, --size            Display total file sizes if the type is container
      --type string     Return JSON for specified type

在这里插入图片描述
inspect相关参数具体说明详见：

https://docs.docker.com/engine/reference/commandline/inspect/

2.命令格式

后续inspect查看网络相关的以当前查看运行的容器信息为实验

docker ps

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                         NAMES
fda95bab83df        nginx               "nginx -g 'daemon of…"   24 minutes ago      Up 24 minutes       0.0.0.0:9999->80/tcp, 0.0.0.0:8888->443/tcp   nginx-wyf-2
a8320c759fe2        nginx               "nginx -g 'daemon of…"   30 minutes ago      Up 30 minutes       192.168.234.62:8989->80/tcp                   nginx-wyf-1
340605f1190c        nginx               "nginx -g 'daemon of…"   50 minutes ago      Up 50 minutes       192.168.234.62:32772->80/tcp                  nginx-wyf
b2b295d86c50        nginx               "nginx -g 'daemon of…"   59 minutes ago      Up 59 minutes       0.0.0.0:32771->80/tcp                         sweet_elgamal
86a2c1ff3da3        nginx               "nginx -g 'daemon of…"   59 minutes ago      Up 59 minutes       0.0.0.0:32770->80/tcp                         condescending_spence
60decfc922ce        nginx               "nginx -g 'daemon of…"   59 minutes ago      Up 59 minutes       0.0.0.0:32769->80/tcp                         stoic_mirzakhani
1d37e6d9f116        nginx               "nginx -g 'daemon of…"   About an hour ago   Up About an hour    0.0.0.0:32768->80/tcp                         hardcore_bartik
a2334430a3f2        nginx               "nginx -g 'daemon of…"   About an hour ago   Up About an hour    80/tcp                                        ecstatic_euler
799ceb41a562        ubuntu              "/bin/bash"              2 hours ago         Up 2 hours                                                        vf-ubunt-3
3d392914e276        ubuntu              "/bin/bash"              21 hours ago        Up 3 hours                                                        vf-ubunt-1

在这里插入图片描述

1.查看容器IP地址

docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' 容器ID

例：

docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' fda95bab83df

在这里插入图片描述

2.查看容器MAC地址

docker inspect --format='{{range .NetworkSettings.Networks}}{{.MacAddress}}{{end}}' 容器ID

例：

docker inspect --format='{{range .NetworkSettings.Networks}}{{.MacAddress}}{{end}}' fda95bab83df

在这里插入图片描述

3.查看容器的所有端口绑定

docker inspect --format='{{range $p, $conf := .NetworkSettings.Ports}} {{$p}} -> {{(index $conf 0).HostPort}} {{end}}' 容器ID

例：

docker inspect --format='{{range $p, $conf := .NetworkSettings.Ports}} {{$p}} -> {{(index $conf 0).HostPort}} {{end}}' fda95bab83df

在这里插入图片描述

4.查找特定的端口映射

当字段名称以数字开头时，.Field语法不起作用，但是模板语言的索引函数起作用。 .NetworkSettings.Ports部分包含内部端口映射到外部地址/端口对象列表的映射。 要仅获取数字公共端口，可使用index查找特定的端口映射，然后index 0包含其中的第一个对象。 然后，我们要求HostPort字段获取公共地址。

docker inspect --format='{{(index (index .NetworkSettings.Ports "容器端口号/tcp") 0).HostPort}}' 容器ID

例：
1.查找容器端口号为80映射到宿主机的端口号

docker inspect --format='{{(index (index .NetworkSettings.Ports "80/tcp") 0).HostPort}}' fda95bab83df

在这里插入图片描述
2.查找容器端口号为443映射到宿主机的端口号

docker inspect --format='{{(index (index .NetworkSettings.Ports "443/tcp") 0).HostPort}}' fda95bab83df

在这里插入图片描述

3.port

1.获取帮助

docker port --help

Usage:  docker port CONTAINER [PRIVATE_PORT[/PROTO]]

List port mappings or a specific mapping for the container

port相关参数具体说明详见：

https://docs.docker.com/engine/reference/commandline/port/

2.命令格式

查看端口信息

docker port [容器id]

例：
1.获取最近创建的第一个容器

docker ps -n 1

2.获取第一列第二行的值【第一列是容器ID，第一行是标题，所以取第二行】

awk '{print $1}'|sed -n '2p'

3.查找对应的端口信息【$1：前面执行的结果的第一个参数】

xargs docker port $1

完整命令

docker ps -n 1|awk '{print $1}'|sed -n '2p'| xargs docker port $1

手动查找的效果一样，完整指令简化了步骤而已。
在这里插入图片描述

3.网络模式

从1.7.0版本开始，Docker正式把网络跟存储这两个部分的功能实现都以插件化的形式剥离出来，允许用户通过指令来选择不同的后端实现。这也就是Docker希望构建围绕着容器的强大生态系统的一些积极尝试。
剥离出来的独立网络项目叫做libnetwork，libnetwork中的网络模型（Container Networking Model ，CNM）十分简洁，可以让上层的大量应用容器最大程度上不去关心底层实现。

Docker的常用网络模式

1.bridge模式【默认】

Docker的默认模式，它会在docker容器启动时候，自动配置好自己的网络信息，同一宿主机的所有容器都在一个网络下，彼此间可以通信。类似于vmware虚拟机的桥接模式。
利用宿主机的网卡进行通信，因为涉及到网络转换，所以会造成资源消耗，网络效率会低。
在这里插入图片描述

2.host模式

容器使用宿主机的ip地址进行通信。
特点：容器和宿主机共享网络。
在这里插入图片描述

3.container模式

新创建的容器间使用，使用已创建的容器网络，类似一个局域网。
特点：容器和容器共享网络
在这里插入图片描述

4.none模式

不做任何网络的配置，可以最大限度的定制化。
不提供网络服务，容器启动后无网络连接。
在这里插入图片描述

5.overlay模式

容器彼此不再同一网络，而且能互相通行。
在这里插入图片描述

1.bridge模式

获取帮助

docker network create --help

Usage:  docker network create [OPTIONS] NETWORK

Create a network

Options:
      --attachable           Enable manual container attachment
      --aux-address map      Auxiliary IPv4 or IPv6 addresses used by Network driver (default map[])
      --config-from string   The network from which copying the configuration
      --config-only          Create a configuration only network
  -d, --driver string        Driver to manage the Network (default "bridge")
      --gateway strings      IPv4 or IPv6 Gateway for the master subnet
      --ingress              Create swarm routing-mesh network
      --internal             Restrict external access to the network
      --ip-range strings     Allocate container ip from a sub-range
      --ipam-driver string   IP Address Management Driver (default "default")
      --ipam-opt map         Set IPAM driver specific options (default map[])
      --ipv6                 Enable IPv6 networking
      --label list           Set metadata on a network
  -o, --opt map              Set driver specific options (default map[])
      --scope string         Control the network's scope
      --subnet strings       Subnet in CIDR format that represents a network segment

1.定制bridge方式一【默认Docker0网桥】

网桥一种设备，根据设备的物理地址来划分网段，并传输数据的，docker0就是默认的网桥，如下创建的容器，它们的ip都是从网桥【docker0】自动获取的。

1.创建桥接网络

docker network create --driver [网络类型][网络名称]
#create  	创建一个网络
#--driver	指定网络类型

例：
1.创建一个名为bridge-test的bridge网络

docker network create --driver bridge bridge-test

2.查看主机网络类型

docker network ls

在这里插入图片描述
3.查看新建网络bridge-test的网络信息

docker network inspect bridge-test

[
    {
        "Name": "bridge-test",
        "Id": "2d515e0d7ecd73fb56059b81342cbfcb91208ce9593c16751ee8ca08d729396d",
        "Created": "2020-04-14T18:03:27.075651663+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.18.0.0/16",
                    "Gateway": "172.18.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {},
        "Options": {},
        "Labels": {}
    }
]

在这里插入图片描述
4.查看宿主机的网卡

ifconfig

br-2d515e0d7ecd: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255
        ether 02:42:c3:38:ec:76  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        inet6 fe80::42:5fff:fe9e:daa2  prefixlen 64  scopeid 0x20<link>
        ether 02:42:5f:9e:da:a2  txqueuelen 0  (Ethernet)
        RX packets 49  bytes 5932 (5.9 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 82  bytes 7928 (7.9 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.234.62  netmask 255.255.255.0  broadcast 192.168.234.255
        inet6 fe80::20c:29ff:fe1e:a361  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:1e:a3:61  txqueuelen 1000  (Ethernet)
        RX packets 951867  bytes 1225269259 (1.2 GB)
        RX errors 57  dropped 70  overruns 0  frame 0
        TX packets 510581  bytes 180833416 (180.8 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 3539  bytes 306743 (306.7 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3539  bytes 306743 (306.7 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth2556e5a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::4cc0:bdff:fe42:bfc1  prefixlen 64  scopeid 0x20<link>
        ether 4e:c0:bd:42:bf:c1  txqueuelen 0  (Ethernet)
        RX packets 49  bytes 6618 (6.6 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 108  bytes 10872 (10.8 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth2ac7e58: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::60b4:f9ff:fe5d:6bbf  prefixlen 64  scopeid 0x20<link>
        ether 62:b4:f9:5d:6b:bf  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 52  bytes 5444 (5.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth330c413: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::9c08:b7ff:fed3:7a65  prefixlen 64  scopeid 0x20<link>
        ether 9e:08:b7:d3:7a:65  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 58  bytes 5927 (5.9 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth353b303: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::4410:a5ff:fef6:61a2  prefixlen 64  scopeid 0x20<link>
        ether 46:10:a5:f6:61:a2  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 63  bytes 6368 (6.3 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth619ddad: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::c884:10ff:fef9:8715  prefixlen 64  scopeid 0x20<link>
        ether ca:84:10:f9:87:15  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 57  bytes 5885 (5.8 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth666aefd: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::34aa:38ff:fec8:3785  prefixlen 64  scopeid 0x20<link>
        ether 36:aa:38:c8:37:85  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 57  bytes 5885 (5.8 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth8d2f186: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::5c5d:ecff:fecd:b479  prefixlen 64  scopeid 0x20<link>
        ether 5e:5d:ec:cd:b4:79  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 56  bytes 5815 (5.8 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth9b13e13: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::d8bf:efff:fe0c:fc5a  prefixlen 64  scopeid 0x20<link>
        ether da:bf:ef:0c:fc:5a  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 57  bytes 5885 (5.8 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

vethbfd3ef0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::2c01:e7ff:fe21:493e  prefixlen 64  scopeid 0x20<link>
        ether 2e:01:e7:21:49:3e  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 71  bytes 7139 (7.1 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

vethca68399: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::2ce8:82ff:fe97:4f75  prefixlen 64  scopeid 0x20<link>
        ether 2e:e8:82:97:4f:75  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 52  bytes 5444 (5.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

多出了一张br-2d515e0d7ecd网卡

br-2d515e0d7ecd: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255
        ether 02:42:c3:38:ec:76  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

2.自定义网段与网关

docker network create --driver [网络类型] --gateway [网关] --subnet [子网] [网络名称]
#--gateway strings      IPv4 or IPv6 Gateway for the master subnet
#                       主子网的IPv4或IPv6网关。

#--subnet strings       Subnet in CIDR format that represents a network segment
#                       表示网络段的CIDR格式的子网。

上述创建桥接网络的时候的网络信息：

docker network inspect bridge-test

[
    {
        "Name": "bridge-test",
        "Id": "2d515e0d7ecd73fb56059b81342cbfcb91208ce9593c16751ee8ca08d729396d",
        "Created": "2020-04-14T18:03:27.075651663+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.18.0.0/16", 
                    "Gateway": "172.18.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {},
        "Options": {},
        "Labels": {}
    }
]

对应的网关和子网信息为：

"IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.18.0.0/16", # 子网信息
                    "Gateway": "172.18.0.1" # 网关
                }
            ]
        },

例：
1.创建自定义名为bridge-test1的网关为：172.66.0.1，子网为：172.66.0.0/16，bridge模式的网络

docker network create --driver bridge --gateway 172.66.0.1 --subnet 172.66.0.0/16 bridge-test1

创建成功返回对应的sha256码：

0638f8a6598bd0dadfe98c07735e0208444e2315855c19a70121d249fa08965b

在这里插入图片描述
2.查看网络列表

docker network ls

NETWORK ID          NAME                DRIVER              SCOPE
8e8b24ce3a07        bridge              bridge              local
2d515e0d7ecd        bridge-test         bridge              local
0638f8a6598b        bridge-test1        bridge              local
59f27d5cdcbc        host                host                local
26dd69b9aac8        none                null                local

在这里插入图片描述
3.查看自定义网络bridge-test1的网关与网络信息

docker network inspect bridge-test1

[
    {
        "Name": "bridge-test1",
        "Id": "0638f8a6598bd0dadfe98c07735e0208444e2315855c19a70121d249fa08965b",
        "Created": "2020-04-14T18:20:25.712472704+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.66.0.0/16",
                    "Gateway": "172.66.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {},
        "Options": {},
        "Labels": {}
    }
]

在这里插入图片描述
4.查看宿主机的网卡

ifconfig

br-0638f8a6598b: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.66.0.1  netmask 255.255.0.0  broadcast 172.66.255.255
        ether 02:42:ec:f7:89:73  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

br-2d515e0d7ecd: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255
        ether 02:42:c3:38:ec:76  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        inet6 fe80::42:5fff:fe9e:daa2  prefixlen 64  scopeid 0x20<link>
        ether 02:42:5f:9e:da:a2  txqueuelen 0  (Ethernet)
        RX packets 49  bytes 5932 (5.9 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 83  bytes 8015 (8.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.234.62  netmask 255.255.255.0  broadcast 192.168.234.255
        inet6 fe80::20c:29ff:fe1e:a361  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:1e:a3:61  txqueuelen 1000  (Ethernet)
        RX packets 952114  bytes 1225287595 (1.2 GB)
        RX errors 57  dropped 70  overruns 0  frame 0
        TX packets 510667  bytes 180850219 (180.8 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 3572  bytes 309420 (309.4 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3572  bytes 309420 (309.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth2556e5a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::4cc0:bdff:fe42:bfc1  prefixlen 64  scopeid 0x20<link>
        ether 4e:c0:bd:42:bf:c1  txqueuelen 0  (Ethernet)
        RX packets 49  bytes 6618 (6.6 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 109  bytes 10959 (10.9 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth2ac7e58: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::60b4:f9ff:fe5d:6bbf  prefixlen 64  scopeid 0x20<link>
        ether 62:b4:f9:5d:6b:bf  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 54  bytes 5601 (5.6 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth330c413: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::9c08:b7ff:fed3:7a65  prefixlen 64  scopeid 0x20<link>
        ether 9e:08:b7:d3:7a:65  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 59  bytes 6014 (6.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth353b303: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::4410:a5ff:fef6:61a2  prefixlen 64  scopeid 0x20<link>
        ether 46:10:a5:f6:61:a2  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 64  bytes 6455 (6.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth619ddad: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::c884:10ff:fef9:8715  prefixlen 64  scopeid 0x20<link>
        ether ca:84:10:f9:87:15  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 58  bytes 5972 (5.9 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth666aefd: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::34aa:38ff:fec8:3785  prefixlen 64  scopeid 0x20<link>
        ether 36:aa:38:c8:37:85  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 58  bytes 5972 (5.9 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth8d2f186: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::5c5d:ecff:fecd:b479  prefixlen 64  scopeid 0x20<link>
        ether 5e:5d:ec:cd:b4:79  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 58  bytes 5972 (5.9 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth9b13e13: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::d8bf:efff:fe0c:fc5a  prefixlen 64  scopeid 0x20<link>
        ether da:bf:ef:0c:fc:5a  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 58  bytes 5972 (5.9 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

vethbfd3ef0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::2c01:e7ff:fe21:493e  prefixlen 64  scopeid 0x20<link>
        ether 2e:01:e7:21:49:3e  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 73  bytes 7333 (7.3 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

vethca68399: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::2ce8:82ff:fe97:4f75  prefixlen 64  scopeid 0x20<link>
        ether 2e:e8:82:97:4f:75  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 55  bytes 5708 (5.7 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

多出了一张br-0638f8a6598b网卡

br-0638f8a6598b: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.66.0.1  netmask 255.255.0.0  broadcast 172.66.255.255
        ether 02:42:ec:f7:89:73  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

3.在自定义网络中启动容器

docker run --net=[网络名称] -itd --name=[容器名称][镜像名称]

在上述创建的两个bridge模式的网络中：
查看容器信息：

docker network inspect bridge-test | grep -Po 'Containers[" :]+\K[^"]+'
docker network inspect bridge-test1 | grep -Po 'Containers[" :]+\K[^"]+'

对应命令：

docker network inspect bridge-test
docker network inspect bridge-test1

中取出json的"Containers"的键对应的值：
在这里插入图片描述
在这里插入图片描述
bridge-test 和 bridge-test1的容器都是空的。

1.创建启动1个使用网络为【bridge-test1】名为【nginx-wyf-bridge-1】的容器

docker run --net=bridge-test1 -itd --name nginx-wyf-bridge-1 nginx

在这里插入图片描述
2.查看运行的容器和容器信息

docker ps 

CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS               NAMES
2ca0dbed742c        nginx               "nginx -g 'daemon of…"   About a minute ago   Up About a minute   80/tcp              nginx-wyf-bridge-1

docker inspect 2ca0dbed742c

[
    {
        "Id": "2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29",
        "Created": "2020-04-15T01:42:32.64388843Z",
        "Path": "nginx",
        "Args": [
            "-g",
            "daemon off;"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 4364,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2020-04-15T01:42:33.696309008Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:ed21b7a8aee9cc677df6d7f38a641fa0e3c05f65592c592c9f28c42b3dd89291",
        "ResolvConfPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/hostname",
        "HostsPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/hosts",
        "LogPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29-json.log",
        "Name": "/nginx-wyf-bridge-1",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "docker-default",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "bridge-test1",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4-init/diff:/var/lib/docker/overlay2/9426eaa48adadb9db8631c15552afd0bf8b5c11e5c8f7edafb1d69d039b649e4/diff:/var/lib/docker/overlay2/0899a3735095820f73d6e45850975cc9ffcbc0c3d7b364bf2b138fb71278e507/diff:/var/lib/docker/overlay2/886d6705a472b017f4a5eb68e6966b2303180d542f6955f4c2f4eee81092c095/diff",
                "MergedDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/merged",
                "UpperDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/diff",
                "WorkDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "2ca0dbed742c",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "80/tcp": {}
            },
            "Tty": true,
            "OpenStdin": true,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "NGINX_VERSION=1.17.9",
                "NJS_VERSION=0.3.9",
                "PKG_RELEASE=1~buster"
            ],
            "Cmd": [
                "nginx",
                "-g",
                "daemon off;"
            ],
            "Image": "nginx",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "maintainer": "NGINX Docker Maintainers <[email protected]>"
            },
            "StopSignal": "SIGTERM"
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "cb9bedd6c0b6f17f608ecd788101bbc1dc89dc421fcc9ae3531af3bf8c199d4c",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {
                "80/tcp": null
            },
            "SandboxKey": "/var/run/docker/netns/cb9bedd6c0b6",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {
                "bridge-test1": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": [
                        "2ca0dbed742c"
                    ],
                    "NetworkID": "0638f8a6598bd0dadfe98c07735e0208444e2315855c19a70121d249fa08965b",
                    "EndpointID": "3d9ee47114aabde7af56e00a80d776918dc1313deef62bd195020f2f9fcb535d",
                    "Gateway": "172.66.0.1",
                    "IPAddress": "172.66.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:42:00:02",
                    "DriverOpts": null
                }
            }
        }
    }
]

在容器 nginx-wyf-bridge-1中的网络出现了bridge-test1的信息：

 "Networks": {
                "bridge-test1": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": [
                        "2ca0dbed742c"
                    ],
                    "NetworkID": "0638f8a6598bd0dadfe98c07735e0208444e2315855c19a70121d249fa08965b",
                    "EndpointID": "3d9ee47114aabde7af56e00a80d776918dc1313deef62bd195020f2f9fcb535d",
                    "Gateway": "172.66.0.1",
                    "IPAddress": "172.66.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:42:00:02",
                    "DriverOpts": null
                }
            }

3.查看网络信息

docker network inspect bridge-test

[
    {
        "Name": "bridge-test",
        "Id": "2d515e0d7ecd73fb56059b81342cbfcb91208ce9593c16751ee8ca08d729396d",
        "Created": "2020-04-14T18:03:27.075651663+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.18.0.0/16",
                    "Gateway": "172.18.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {},
        "Options": {},
        "Labels": {}
    }
]

因为没有在bridge-test中启动容器，“Containers”: {},容器依然是空的

docker network inspect bridge-test1

[
    {
        "Name": "bridge-test1",
        "Id": "0638f8a6598bd0dadfe98c07735e0208444e2315855c19a70121d249fa08965b",
        "Created": "2020-04-14T18:20:25.712472704+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.66.0.0/16",
                    "Gateway": "172.66.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {
            "2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29": {
                "Name": "nginx-wyf-bridge-1",
                "EndpointID": "3d9ee47114aabde7af56e00a80d776918dc1313deef62bd195020f2f9fcb535d",
                "MacAddress": "02:42:ac:42:00:02",
                "IPv4Address": "172.66.0.2/16",
                "IPv6Address": ""
            }
        },
        "Options": {},
        "Labels": {}
    }
]

bridge-test1中有了容器nginx-wyf-bridge-1的信息

"Containers": {
            "2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29": {
                "Name": "nginx-wyf-bridge-1",
                "EndpointID": "3d9ee47114aabde7af56e00a80d776918dc1313deef62bd195020f2f9fcb535d",
                "MacAddress": "02:42:ac:42:00:02",
                "IPv4Address": "172.66.0.2/16",
                "IPv6Address": ""
            }
        },

4.创建启动1个使用网络为【bridge-test】名为【nginx-wyf-bridge-2】的容器

docker run --net=bridge-test -itd --name nginx-wyf-bridge-2 nginx && docker ps && docker inspect nginx-wyf-bridge-2

57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                  PORTS               NAMES
57ab1e2a80ed        nginx               "nginx -g 'daemon of…"   1 second ago        Up Less than a second   80/tcp              nginx-wyf-bridge-2
2ca0dbed742c        nginx               "nginx -g 'daemon of…"   5 minutes ago       Up 5 minutes            80/tcp              nginx-wyf-bridge-1
[
    {
        "Id": "57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712",
        "Created": "2020-04-15T01:47:48.93949876Z",
        "Path": "nginx",
        "Args": [
            "-g",
            "daemon off;"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 4558,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2020-04-15T01:47:49.757267457Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:ed21b7a8aee9cc677df6d7f38a641fa0e3c05f65592c592c9f28c42b3dd89291",
        "ResolvConfPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/hostname",
        "HostsPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/hosts",
        "LogPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712-json.log",
        "Name": "/nginx-wyf-bridge-2",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "docker-default",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "bridge-test",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9-init/diff:/var/lib/docker/overlay2/9426eaa48adadb9db8631c15552afd0bf8b5c11e5c8f7edafb1d69d039b649e4/diff:/var/lib/docker/overlay2/0899a3735095820f73d6e45850975cc9ffcbc0c3d7b364bf2b138fb71278e507/diff:/var/lib/docker/overlay2/886d6705a472b017f4a5eb68e6966b2303180d542f6955f4c2f4eee81092c095/diff",
                "MergedDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/merged",
                "UpperDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/diff",
                "WorkDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "57ab1e2a80ed",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "80/tcp": {}
            },
            "Tty": true,
            "OpenStdin": true,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "NGINX_VERSION=1.17.9",
                "NJS_VERSION=0.3.9",
                "PKG_RELEASE=1~buster"
            ],
            "Cmd": [
                "nginx",
                "-g",
                "daemon off;"
            ],
            "Image": "nginx",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "maintainer": "NGINX Docker Maintainers <[email protected]>"
            },
            "StopSignal": "SIGTERM"
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "76c7aec0e9ee9fcc7d49918bf6554c32a85e26160615ac11c87fa64c569f0de0",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {
                "80/tcp": null
            },
            "SandboxKey": "/var/run/docker/netns/76c7aec0e9ee",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {
                "bridge-test": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": [
                        "57ab1e2a80ed"
                    ],
                    "NetworkID": "2d515e0d7ecd73fb56059b81342cbfcb91208ce9593c16751ee8ca08d729396d",
                    "EndpointID": "0b3c5c5716d4f82dbb3cb99fd695d7819256cb1886759f927cb5a074d83f4ec4",
                    "Gateway": "172.18.0.1",
                    "IPAddress": "172.18.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:12:00:02",
                    "DriverOpts": null
                }
            }
        }
    }
]

此时的容器nginx-wyf-bridge-2中已经有了bridge-test的网络信息

 "Networks": {
                "bridge-test": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": [
                        "57ab1e2a80ed"
                    ],
                    "NetworkID": "2d515e0d7ecd73fb56059b81342cbfcb91208ce9593c16751ee8ca08d729396d",
                    "EndpointID": "0b3c5c5716d4f82dbb3cb99fd695d7819256cb1886759f927cb5a074d83f4ec4",
                    "Gateway": "172.18.0.1",
                    "IPAddress": "172.18.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:12:00:02",
                    "DriverOpts": null
                }
            }
        }

3.查看网络bridge-test信息

docker network inspect bridge-test

[
    {
        "Name": "bridge-test",
        "Id": "2d515e0d7ecd73fb56059b81342cbfcb91208ce9593c16751ee8ca08d729396d",
        "Created": "2020-04-14T18:03:27.075651663+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.18.0.0/16",
                    "Gateway": "172.18.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {
            "57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712": {
                "Name": "nginx-wyf-bridge-2",
                "EndpointID": "0b3c5c5716d4f82dbb3cb99fd695d7819256cb1886759f927cb5a074d83f4ec4",
                "MacAddress": "02:42:ac:12:00:02",
                "IPv4Address": "172.18.0.2/16",
                "IPv6Address": ""
            }
        },
        "Options": {},
        "Labels": {}
    }
]

此时的bridge-test中启动容器nginx-wyf-bridge-2，bridge-test中也有了nginx-wyf-bridge-2的信息

"Containers": {
            "57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712": {
                "Name": "nginx-wyf-bridge-2",
                "EndpointID": "0b3c5c5716d4f82dbb3cb99fd695d7819256cb1886759f927cb5a074d83f4ec4",
                "MacAddress": "02:42:ac:12:00:02",
                "IPv4Address": "172.18.0.2/16",
                "IPv6Address": ""
            }
        },
注意：
1. 使用默认的桥接模型创建的容器是可以直接联网的。
2. 使用自定义的桥接模型创建的容器不可以直接联网，但是可以通过端口映射来实现联网。

也就意味着：
nginx-wyf-bridge-2和nginx-wyf-bridge-1不能联网， nginx-wyf-bridge-2采用的是自定义的bridge网络bridge-test，nginx-wyf-bridge-1采用的是自定义的bridge网络bridge-test1，所以需要通过端口映射来实现联网。

4.容器断开网络

docker network disconnect [网络名][容器名]

例：
1.断开容器nginx-wyf-bridge-2网络bridge-test

docker network disconnect bridge-test nginx-wyf-bridge-2

2.查看运行的容器

docke ps

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
57ab1e2a80ed        nginx               "nginx -g 'daemon of…"   3 minutes ago       Up 3 minutes                            nginx-wyf-bridge-2
2ca0dbed742c        nginx               "nginx -g 'daemon of…"   9 minutes ago       Up 9 minutes        80/tcp              nginx-wyf-bridge-1

在这里插入图片描述
发现nginx-wyf-bridge-2的网络消失
3.断开容器nginx-wyf-bridge-1网络bridge-test1

docker network disconnect bridge-test1 nginx-wyf-bridge-1

4.查看运行的容器

docke ps

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
57ab1e2a80ed        nginx               "nginx -g 'daemon of…"   7 minutes ago       Up 7 minutes                            nginx-wyf-bridge-2
2ca0dbed742c        nginx               "nginx -g 'daemon of…"   12 minutes ago      Up 12 minutes                           nginx-wyf-bridge-1

在这里插入图片描述
发现nginx-wyf-bridge-1的网络也消失了
5.分别查看网络bridge-test bridge-test1的网络

docker network inspect bridge-test | grep -Po 'Containers[" :]+\K[^"]+'
docker network inspect bridge-test1 | grep -Po 'Containers[" :]+\K[^"]+'

在这里插入图片描述
在这里插入图片描述
在这里插入图片描述
发现网络bridge-test、bridge-test1中的容器的信息都没有了
6.分别查看两个容器nginx-wyf-bridge-1、nginx-wyf-bridge-2的信息

docker inspect nginx-wyf-bridge-1
docker inspect nginx-wyf-bridge-2

[
    {
        "Id": "2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29",
        "Created": "2020-04-15T01:42:32.64388843Z",
        "Path": "nginx",
        "Args": [
            "-g",
            "daemon off;"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 4364,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2020-04-15T01:42:33.696309008Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:ed21b7a8aee9cc677df6d7f38a641fa0e3c05f65592c592c9f28c42b3dd89291",
        "ResolvConfPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/hostname",
        "HostsPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/hosts",
        "LogPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29-json.log",
        "Name": "/nginx-wyf-bridge-1",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "docker-default",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "bridge-test1",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4-init/diff:/var/lib/docker/overlay2/9426eaa48adadb9db8631c15552afd0bf8b5c11e5c8f7edafb1d69d039b649e4/diff:/var/lib/docker/overlay2/0899a3735095820f73d6e45850975cc9ffcbc0c3d7b364bf2b138fb71278e507/diff:/var/lib/docker/overlay2/886d6705a472b017f4a5eb68e6966b2303180d542f6955f4c2f4eee81092c095/diff",
                "MergedDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/merged",
                "UpperDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/diff",
                "WorkDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "2ca0dbed742c",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "80/tcp": {}
            },
            "Tty": true,
            "OpenStdin": true,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "NGINX_VERSION=1.17.9",
                "NJS_VERSION=0.3.9",
                "PKG_RELEASE=1~buster"
            ],
            "Cmd": [
                "nginx",
                "-g",
                "daemon off;"
            ],
            "Image": "nginx",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "maintainer": "NGINX Docker Maintainers <[email protected]>"
            },
            "StopSignal": "SIGTERM"
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "cb9bedd6c0b6f17f608ecd788101bbc1dc89dc421fcc9ae3531af3bf8c199d4c",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {},
            "SandboxKey": "/var/run/docker/netns/cb9bedd6c0b6",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {}
        }
    }
]

nginx-wyf-bridge-1的 “Networks”: {}，没有了网络信息

[
    {
        "Id": "57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712",
        "Created": "2020-04-15T01:47:48.93949876Z",
        "Path": "nginx",
        "Args": [
            "-g",
            "daemon off;"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 4558,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2020-04-15T01:47:49.757267457Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:ed21b7a8aee9cc677df6d7f38a641fa0e3c05f65592c592c9f28c42b3dd89291",
        "ResolvConfPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/hostname",
        "HostsPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/hosts",
        "LogPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712-json.log",
        "Name": "/nginx-wyf-bridge-2",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "docker-default",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "bridge-test",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9-init/diff:/var/lib/docker/overlay2/9426eaa48adadb9db8631c15552afd0bf8b5c11e5c8f7edafb1d69d039b649e4/diff:/var/lib/docker/overlay2/0899a3735095820f73d6e45850975cc9ffcbc0c3d7b364bf2b138fb71278e507/diff:/var/lib/docker/overlay2/886d6705a472b017f4a5eb68e6966b2303180d542f6955f4c2f4eee81092c095/diff",
                "MergedDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/merged",
                "UpperDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/diff",
                "WorkDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "57ab1e2a80ed",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "80/tcp": {}
            },
            "Tty": true,
            "OpenStdin": true,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "NGINX_VERSION=1.17.9",
                "NJS_VERSION=0.3.9",
                "PKG_RELEASE=1~buster"
            ],
            "Cmd": [
                "nginx",
                "-g",
                "daemon off;"
            ],
            "Image": "nginx",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "maintainer": "NGINX Docker Maintainers <[email protected]>"
            },
            "StopSignal": "SIGTERM"
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "76c7aec0e9ee9fcc7d49918bf6554c32a85e26160615ac11c87fa64c569f0de0",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {},
            "SandboxKey": "/var/run/docker/netns/76c7aec0e9ee",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {}
        }
    }
]

nginx-wyf-bridge-2的 “Networks”: {}，没有了网络信息

5.容器连接网络

docker network connect [网络名][容器名]

例：
1.查看运行的容器

docker ps

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
57ab1e2a80ed        nginx               "nginx -g 'daemon of…"   18 minutes ago      Up 18 minutes                           nginx-wyf-bridge-2
2ca0dbed742c        nginx               "nginx -g 'daemon of…"   24 minutes ago      Up 24 minutes                           nginx-wyf-bridge-1

在这里插入图片描述
运行的容器nginx-wyf-bridge-1和nginx-wyf-bridge-2都没有网络信息。
2.将容器nginx-wyf-bridge-1连接到bridge-test1网络，并查看运行的容器变化

docker network connect bridge-test1 nginx-wyf-bridge-1 && docker ps

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
57ab1e2a80ed        nginx               "nginx -g 'daemon of…"   22 minutes ago      Up 21 minutes                           nginx-wyf-bridge-2
2ca0dbed742c        nginx               "nginx -g 'daemon of…"   27 minutes ago      Up 27 minutes       80/tcp              nginx-wyf-bridge-1

在这里插入图片描述
容器nginx-wyf-bridge-1有了网络信息
3.将容器nginx-wyf-bridge-2连接到bridge-test网络，并查看运行的容器变化

docker network connect bridge-test nginx-wyf-bridge-2 && docker ps

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
57ab1e2a80ed        nginx               "nginx -g 'daemon of…"   24 minutes ago      Up 24 minutes       80/tcp              nginx-wyf-bridge-2
2ca0dbed742c        nginx               "nginx -g 'daemon of…"   30 minutes ago      Up 30 minutes       80/tcp              nginx-wyf-bridge-1

在这里插入图片描述
容器nginx-wyf-bridge-2也有了网络信息

4.查看网络bridge-test和bridge-test1的容器信息

docker network inspect bridge-test
docker network inspect bridge-test1

在这里插入图片描述
在这里插入图片描述
5.查看容器是否含有对应的网络信息

docker inspect nginx-wyf-bridge-1

[
    {
        "Id": "2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29",
        "Created": "2020-04-15T01:42:32.64388843Z",
        "Path": "nginx",
        "Args": [
            "-g",
            "daemon off;"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 4364,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2020-04-15T01:42:33.696309008Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:ed21b7a8aee9cc677df6d7f38a641fa0e3c05f65592c592c9f28c42b3dd89291",
        "ResolvConfPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/hostname",
        "HostsPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/hosts",
        "LogPath": "/var/lib/docker/containers/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29/2ca0dbed742c428a989f4c955840a6608de4839092314c226751d6033d0f9d29-json.log",
        "Name": "/nginx-wyf-bridge-1",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "docker-default",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "bridge-test1",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4-init/diff:/var/lib/docker/overlay2/9426eaa48adadb9db8631c15552afd0bf8b5c11e5c8f7edafb1d69d039b649e4/diff:/var/lib/docker/overlay2/0899a3735095820f73d6e45850975cc9ffcbc0c3d7b364bf2b138fb71278e507/diff:/var/lib/docker/overlay2/886d6705a472b017f4a5eb68e6966b2303180d542f6955f4c2f4eee81092c095/diff",
                "MergedDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/merged",
                "UpperDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/diff",
                "WorkDir": "/var/lib/docker/overlay2/c63b9df9a361f2becb66b486a21b1c7479224063a56a9ab1118a2aced6f359a4/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "2ca0dbed742c",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "80/tcp": {}
            },
            "Tty": true,
            "OpenStdin": true,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "NGINX_VERSION=1.17.9",
                "NJS_VERSION=0.3.9",
                "PKG_RELEASE=1~buster"
            ],
            "Cmd": [
                "nginx",
                "-g",
                "daemon off;"
            ],
            "Image": "nginx",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "maintainer": "NGINX Docker Maintainers <[email protected]>"
            },
            "StopSignal": "SIGTERM"
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "cb9bedd6c0b6f17f608ecd788101bbc1dc89dc421fcc9ae3531af3bf8c199d4c",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {
                "80/tcp": null
            },
            "SandboxKey": "/var/run/docker/netns/cb9bedd6c0b6",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {
                "bridge-test1": {
                    "IPAMConfig": {},
                    "Links": null,
                    "Aliases": [
                        "2ca0dbed742c"
                    ],
                    "NetworkID": "0638f8a6598bd0dadfe98c07735e0208444e2315855c19a70121d249fa08965b",
                    "EndpointID": "4ed1b4eec88fe9872fc8d405ff3aec451efcc25b9e8cc492c4a016d627f9d02d",
                    "Gateway": "172.66.0.1",
                    "IPAddress": "172.66.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:42:00:02",
                    "DriverOpts": {}
                }
            }
        }
    }
]

nginx-wyf-bridge-1容器中有了bridge-test1的网络信息

 "Networks": {
                "bridge-test1": {
                    "IPAMConfig": {},
                    "Links": null,
                    "Aliases": [
                        "2ca0dbed742c"
                    ],
                    "NetworkID": "0638f8a6598bd0dadfe98c07735e0208444e2315855c19a70121d249fa08965b",
                    "EndpointID": "4ed1b4eec88fe9872fc8d405ff3aec451efcc25b9e8cc492c4a016d627f9d02d",
                    "Gateway": "172.66.0.1",
                    "IPAddress": "172.66.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:42:00:02",
                    "DriverOpts": {}
                }
            }

docker inspect nginx-wyf-bridge-2

[
    {
        "Id": "57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712",
        "Created": "2020-04-15T01:47:48.93949876Z",
        "Path": "nginx",
        "Args": [
            "-g",
            "daemon off;"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 4558,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2020-04-15T01:47:49.757267457Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:ed21b7a8aee9cc677df6d7f38a641fa0e3c05f65592c592c9f28c42b3dd89291",
        "ResolvConfPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/hostname",
        "HostsPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/hosts",
        "LogPath": "/var/lib/docker/containers/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712/57ab1e2a80ed797bf6e77af22926463aaa03711c746f26d710058471931b9712-json.log",
        "Name": "/nginx-wyf-bridge-2",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "docker-default",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "bridge-test",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Capabilities": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9-init/diff:/var/lib/docker/overlay2/9426eaa48adadb9db8631c15552afd0bf8b5c11e5c8f7edafb1d69d039b649e4/diff:/var/lib/docker/overlay2/0899a3735095820f73d6e45850975cc9ffcbc0c3d7b364bf2b138fb71278e507/diff:/var/lib/docker/overlay2/886d6705a472b017f4a5eb68e6966b2303180d542f6955f4c2f4eee81092c095/diff",
                "MergedDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/merged",
                "UpperDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/diff",
                "WorkDir": "/var/lib/docker/overlay2/6aa84fe3cd0b8fddcb088be117297720adc3d736cbebb78b4aa4a3deccf681a9/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "57ab1e2a80ed",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "80/tcp": {}
            },
            "Tty": true,
            "OpenStdin": true,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "NGINX_VERSION=1.17.9",
                "NJS_VERSION=0.3.9",
                "PKG_RELEASE=1~buster"
            ],
            "Cmd": [
                "nginx",
                "-g",
                "daemon off;"
            ],
            "Image": "nginx",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {
                "maintainer": "NGINX Docker Maintainers <[email protected]>"
            },
            "StopSignal": "SIGTERM"
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "76c7aec0e9ee9fcc7d49918bf6554c32a85e26160615ac11c87fa64c569f0de0",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {
                "80/tcp": null
            },
            "SandboxKey": "/var/run/docker/netns/76c7aec0e9ee",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {
                "bridge-test": {
                    "IPAMConfig": {},
                    "Links": null,
                    "Aliases": [
                        "57ab1e2a80ed"
                    ],
                    "NetworkID": "2d515e0d7ecd73fb56059b81342cbfcb91208ce9593c16751ee8ca08d729396d",
                    "EndpointID": "c4bfbc6829be8e5cd4d942902ad83da63c671ab7f75d2dfd4ff11f1098168c34",
                    "Gateway": "172.18.0.1",
                    "IPAddress": "172.18.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:12:00:02",
                    "DriverOpts": {}
                }
            }
        }
    }
]

nginx-wyf-bridge-2容器中有了bridge-test的网络信息

 "Networks": {
                "bridge-test": {
                    "IPAMConfig": {},
                    "Links": null,
                    "Aliases": [
                        "57ab1e2a80ed"
                    ],
                    "NetworkID": "2d515e0d7ecd73fb56059b81342cbfcb91208ce9593c16751ee8ca08d729396d",
                    "EndpointID": "c4bfbc6829be8e5cd4d942902ad83da63c671ab7f75d2dfd4ff11f1098168c34",
                    "Gateway": "172.18.0.1",
                    "IPAddress": "172.18.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:12:00:02",
                    "DriverOpts": {}
                }
            }

2.定制bridge方式二【定制Docker网桥】

网桥一种设备，根据设备的物理地址来划分网段，并传输数据的，docker0就是默认的网桥，如下创建的容器，通过自定义一个br0网桥，然后启动的容器就用自定义的网桥获取。
需求：
定制docker网桥br0
分析：
1、网桥的创建
2、docker服务使用新网桥
3、测试
知识点：
1.bridge-utils软件的brctl工具可以实现创建网桥
2.配置/etc/default/docker文件
3.编辑systemctl的配置文件使用该docker文件
​4.重载systemctl配置
5.重启docker
6.创建容器，查看容器信息即可

1.网桥环境部署

1.网桥软件部署

ubuntu默认不自带网桥管理工具，需要自行安装网桥软件

1.安装网桥管理软件

sudo apt install -y bridge-utils

在这里插入图片描述
2.查看网卡

brctl show

bridge name  	   bridge id               STP enabled     interfaces
br-0638f8a6598b    8000.0242da3e7e61       no              veth1958f6e
br-2d515e0d7ecd    8000.0242f4770011       no              veth7af2da6
docker0            8000.0242331f861f       no

在这里插入图片描述

标题 说明
bridge name 网卡名称
bridge id 网卡id
STP enabled STP是否启用
interfaces 物理接口
2.创建网桥

1.创建网桥br0

sudo brctl addbr br0

2.查看网卡

brctl show

bridge name      bridge id               STP enabled     interfaces
br-0638f8a6598b  8000.0242da3e7e61       no              veth1958f6e
br-2d515e0d7ecd  8000.0242f4770011       no              veth7af2da6
br0              8000.000000000000       no
docker0          8000.0242331f861f       no

在这里插入图片描述

3.设置网桥网段

1.给网桥br0设置网段

网络地址是192.168.66.1，掩码：255.255.255.0

sudo ifconfig br0 192.168.66.1 netmask 255.255.255.0

在这里插入图片描述
2.查看网卡信息

ifconfig

br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.66.1  netmask 255.255.255.0  broadcast 192.168.66.255
        inet6 fe80::b027:76ff:fe31:d6f6  prefixlen 64  scopeid 0x20<link>
        ether b2:27:76:31:d6:f6  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 41  bytes 5473 (5.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

br-0638f8a6598b: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.66.0.1  netmask 255.255.0.0  broadcast 172.66.255.255
        inet6 fe80::42:daff:fe3e:7e61  prefixlen 64  scopeid 0x20<link>
        ether 02:42:da:3e:7e:61  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 49  bytes 6099 (6.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

br-2d515e0d7ecd: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255
        inet6 fe80::42:f4ff:fe77:11  prefixlen 64  scopeid 0x20<link>
        ether 02:42:f4:77:00:11  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 45  bytes 5748 (5.7 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:33:1f:86:1f  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.234.62  netmask 255.255.255.0  broadcast 192.168.234.255
        inet6 fe80::20c:29ff:fe1e:a361  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:1e:a3:61  txqueuelen 1000  (Ethernet)
        RX packets 6543  bytes 6184327 (6.1 MB)
        RX errors 4  dropped 4  overruns 0  frame 0
        TX packets 3063  bytes 358676 (358.6 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 407  bytes 33811 (33.8 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 407  bytes 33811 (33.8 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth1958f6e: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::2880:dfff:fe0d:bdf4  prefixlen 64  scopeid 0x20<link>
        ether 2a:80:df:0d:bd:f4  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 40  bytes 4468 (4.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

veth7af2da6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::c823:dcff:fe0e:10f1  prefixlen 64  scopeid 0x20<link>
        ether ca:23:dc:0e:10:f1  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 40  bytes 4468 (4.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

在这里插入图片描述

2.Docker配置网桥

1.配置docker文件

1.备份源文件

sudo cp /etc/default/docker /etc/default/docker.backup

2.在/etc/default/docker末尾追加DOCKER_OPTS="-b=br0"

sudo sh -c 'echo DOCKER_OPTS=\"-b=br0\" >> /etc/default/docker'

3.确认

cat /etc/default/docker

在这里插入图片描述

2.systemctl使用docker文件

更多请参考：

https://docs.docker.com/engine/reference/commandline/docker/

或：

https://docker-doc.readthedocs.io/zh_CN/latest/reference/commandline/cli.html
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