Docker学习笔记 — 开启Docker远程访问

CentOS 7 版本

[root@gitserver ~]# uname -r  
3.10.0-327.el7.x86_64  
[root@gitserver ~]# cat /etc/redhat-release  
CentOS Linux release 7.2.1511 (Core)   

docker 版本

[root@gitserver /]# docker --version  
Docker version 1.12.6, build 3a094bd/1.12.6  

修改/etc/sysconfig/docker文件，在最后增加一行DOCKER_OPTS

# docker-latest daemon can be used by starting the docker-latest unitfile.  
# To use docker-latest client, uncomment below lines  
#DOCKERBINARY=/usr/bin/docker-latest  
#DOCKERDBINARY=/usr/bin/dockerd-latest  
#DOCKER_CONTAINERD_BINARY=/usr/bin/docker-containerd-latest  
#DOCKER_CONTAINERD_SHIM_BINARY=/usr/bin/docker-containerd-shim-latest  
DOCKER_OPTS="-H unix:///var/run/docker.sock -H 0.0.0.0:5555"

修改/usr/lib/systemd/system/docker.service

在[Service]的ExexStart=下面增加一行$DOCKER_OPTS

[Service]  
Type=notify  
NotifyAccess=all  
EnvironmentFile=-/etc/sysconfig/docker  
EnvironmentFile=-/etc/sysconfig/docker-storage  
EnvironmentFile=-/etc/sysconfig/docker-network  
Environment=GOTRACEBACK=crash  
Environment=DOCKER_HTTP_HOST_COMPAT=1  
Environment=PATH=/usr/libexec/docker:/usr/bin:/usr/sbin  
ExecStart=/usr/bin/dockerd-current \  
          --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current \  
          --default-runtime=docker-runc \  
          --exec-opt native.cgroupdriver=systemd \  
          --userland-proxy-path=/usr/libexec/docker/docker-proxy-current \  
          $DOCKER_OPTS \  
          $OPTIONS \  
          $DOCKER_STORAGE_OPTIONS \  
          $DOCKER_NETWORK_OPTIONS \  
          $ADD_REGISTRY \  
          $BLOCK_REGISTRY \  
          $INSECURE_REGISTRY  

执行systemctl dameon

[root@gitserver system]# systemctl daemon-reload  
[root@gitserver system]# systemctl restart docker.service  

用netstat查看

[root@gitserver system]# netstat -tnlp |grep 5555  
tcp6       0      0 :::5555                 :::*                    LISTEN      2025/dockerd-curren   

用curl进行测试

curl 127.0.0.1:2375/info

结果如下：

Debian 8下的配置

配置文件所在的目录与centos不一样

/etc/default/docker

/lib/systemd/system/docker.service

如果不知道目录，可以用find命令查找，find / -name ‘docker.service’ -print