安装docker插件

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开放docker api 实现远程访问

1. 修改/etc/sysconfig/docker文件，在最后增加一行DOCKER_OPTS，表明开放端口5555用作远程操作

     # 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"

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

3. 用curl测试
   curl -v -X GET 主机ip:5555/images/json |python -m json.tool

在IDEA中配置

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常见问题

• Docker启动时提示Failed to start docker.service: Unit docker.service is masked
  执行如下三条指令
  1. systemctl unmask docker.service
  2. systemctl unmask docker.socket
  3. systemctl start docker.service
• 报http: server gave HTTP response to HTTPS client
  1. vim /usr/lib/systemd/system/docker.service
     image.png
  2. 在12行后面增加 --insecure-registry ip：5000
  3. 修改好后重启docker 服务

      systemctl daemon-reload
      systemctl restart docker