Getting started with SpringBoot Docker, SpringBoot Docker installation
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©Copyright Sweet Potato Yao April 2, 2018
http://fanshuyao.iteye.com/
1. Install Docker
1. Check the Linux version
uname -r
Docker requires that the Linux system version is at least 3.10, as follows:
uname -r 3.10.0-327.el7.x86_64
2. Install Docker
yum install docker
The installation process needs to enter y to confirm the installation
when it appears
Complete!
Indicates that the Docker installation was successful!
3. Start Docker
systemctl start docker
4. Check the Docker version
docker -v
The result is as follows:
[root@localhost ~]# docker -v Docker version 1.13.1, build 774336d/1.13.1
or use:
docker version
The result is as follows:
[root@localhost ~]# docker version Client: Version: 1.13.1 API version: 1.26 Package version: <unknown> Go version: go1.8.3 Git commit: 774336d/1.13.1 Built: Wed Mar 7 17:06:16 2018 OS/Arch: linux/amd64 Server: Version: 1.13.1 API version: 1.26 (minimum version 1.12) Package version: <unknown> Go version: go1.8.3 Git commit: 774336d/1.13.1 Built: Wed Mar 7 17:06:16 2018 OS/Arch: linux/amd64 Experimental: false
5. Set Docker to start up
systemctl enable docker
The result is as follows:
[root@localhost ~]# systemctl enable docker Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/ systemd/system/docker.service.
6. Stop Docker
systemctl stop docker
Second, Docker use
1. Search Mysql
docker search mysql
2. Download mysql
docker pull mysql
The default is to download the latest version. If you want to download the specified version, you can add a tag. The tag refers to the version number.
To view the version, you can go to docker Hub: https://hub.docker.com/r/library/mysql/tags/
The command is as follows:
docker pull mysql:tag
Such as:
docker pull mysql:5.5
3. Replace the Dock Hub
Official website address: https://hub.docker.com/explore/
There will be a timeout when using docker Hub to download directly, as follows:
net/http: TLS handshake timeout
So you need to replace the mirror as follows (change to Ali's mirror):
curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s https://04c5r1cy.mirror.aliyuncs.com
then restart docker
systemctl restart docker
An error occurs at this point:
Job for docker.service failed because the control process exited with error code. See "systemctl statu s docker.service" and "journalctl -xe" for details.
The reason is that the image is modified, resulting in an incorrect format of the /etc/docker/daemon.json file, followed by a comma
Check out the daemon.json file:
vi /etc/docker/daemon.json
The contents of the file are as follows:
{"registry-mirrors": ["https://04c5r1cy.mirror.aliyuncs.com"],}
There is a comma after it, which needs to be deleted and modified to
{"registry-mirrors": ["https://04c5r1cy.mirror.aliyuncs.com"]}
Save and exit, restart docker
systemctl restart docker
Then go to get mysql 5.5 version
docker pull mysql:5.5
4. View the mirrors that exist in the system
docker images
The result is as follows:
[root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/mysql 5.5 0da48351c371 2 weeks ago 205 MB
3. Running the image (container use)
1. Run an image component, that is, create a docker window, which can run multiple
docker run --name xxxx -d component name: version number (Tag)
--name: means renaming (-- is two horizontal bars, which cannot be seen here)
-d: means running in the background
Such as running a tomcat:
docker run --name mytomcat -d tomcat:8.5
2. View running containers
docker ps
3. View all containers, including running and paused containers
docker ps -a
4. Stop the running container
docker stop container ID
or
docker stop 容器names
最好使用容器ID
5、重新开始运行暂定的容器
docker start 容器ID
暂停的容器ID通过docker ps -a 查找
6、删除容器
docker rm -f 容器ID
结果如下：
[root@localhost ~]# docker rm -f a9c2f22a4b50 a9c2f22a4b50
7、启动一个有端口映射的容器(Tomcat)
docker run -d -p 8888:8080 tomcat
-d：表示后台运行
-p：表示端口映射，前面的端口为虚拟机的端口，后面的端口表示tomcat的端口，表示将虚拟机的8888端口映射到tomcat的8080端口，当访问192.168.1.166:8888就可以访问tomcat
启动的结果如下：
[root@localhost ~]# docker run --name tomcat8 -d -p 8080:8080 tomcat:8.5 b91a31986a63f82340c588272a334c164de571fb4201d628bad3418f55d7f20b [root@localhost ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES b91a31986a63 tomcat:8.5 "catalina.sh run" 12 seconds ago Up 8 second 0.0.0.0:8080->8080/tcp tomcat8
通过浏览器访问：http://localhost:8080/来检查tomcat有没有启动成功。
注意：
如果访问不了，可能是因为防火墙的原因！！！
查看防火墙状态：
service firewall status
关闭防火墙
service firewall stop
8、查看docker日志
docker logs 容器ID
9、其它：
使用
docker --help
查看其它命令，如下：
[root@localhost ~]# docker --help
Usage: docker COMMAND
A self-sufficient runtime for containers
Options:
--config string Location of client config files (default "/root/.docker")
-D, --debug Enable debug mode
--help Print usage
-H, --host list Daemon socket(s) to connect to (default [])
-l, --log-level string Set the logging level ("debug", "info", "warn", "error", "fatal") (default "info")
--tls Use TLS; implied by --tlsverify
--tlscacert string Trust certs signed only by this CA (default "/root/.docker/ca.pem")
--tlscert string Path to TLS certificate file (default "/root/.docker/cert.pem")
--tlskey string Path to TLS key file (default "/root/.docker/key.pem")
--tlsverify Use TLS and verify the remote
-v, --version Print version information and quit
Management Commands:
container Manage containers
image Manage images
network Manage networks
node Manage Swarm nodes
plugin Manage plugins
secret Manage Docker secrets
service Manage services
stack Manage Docker stacks
swarm Manage Swarm
system Manage Docker
volume Manage volumes
Commands:
attach Attach to a running container
build Build an image from a Dockerfile
commit Create a new image from a container's changes
cp Copy files/folders between a container and the local filesystem
create Create a new container
diff Inspect changes on a container's filesystem
events Get real time events from the server
exec Run a command in a running container
export Export a container's filesystem as a tar archive
history Show the history of an image
images List images
import Import the contents from a tarball to create a filesystem image
info Display system-wide information
inspect Return low-level information on Docker objects
kill Kill one or more running containers
load Load an image from a tar archive or STDIN
login Log in to a Docker registry
logout Log out from a Docker registry
logs Fetch the logs of a container
pause Pause all processes within one or more containers
port List port mappings or a specific mapping for the container
ps List containers
pull Pull an image or a repository from a registry
push Push an image or a repository to a registry
rename Rename a container
restart Restart one or more containers
rm Remove one or more containers
rmi Remove one or more images
run Run a command in a new container
save Save one or more images to a tar archive (streamed to STDOUT by default)
search Search the Docker Hub for images
start Start one or more stopped containers
stats Display a live stream of container(s) resource usage statistics
stop Stop one or more running containers
tag Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
top Display the running processes of a container
unpause Unpause all processes within one or more containers
update Update configuration of one or more containers
version Show the Docker version information
wait Block until one or more containers stop, then print their exit codes
Run 'docker COMMAND --help' for more information on a command.
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©Copyright 蕃薯耀 2018年4月2日
http://fanshuyao.iteye.com/