docker工作笔记1 -- 开启docker Rest api的远程调用

工作环境为CentOS

• 配置docker daemon启动参数
  在 /lib/systemd/system/docker.service中做如下修改

# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:5555 -H unix:///var/run/docker.sock

添加参数-H tcp://0.0.0.0:5555 -H unix:///var/run/docker.sock
用来同时打开本地socket和远程端口。

• 允许防火墙开启端口

 firewall-cmd --permanent --add-port=5555/tcp
 firewall-cmd --reload

• 重新启动docker

 service docker reload

• 查看端口状态

[root@localhost system]# netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      981/sshd
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1087/master
tcp6       0      0 :::5555                 :::*                    LISTEN      1654/dockerd
tcp6       0      0 :::22                   :::*                    LISTEN      981/sshd
tcp6       0      0 ::1:25                  :::*                    LISTEN      1087/master

• 远程测试

http://192.168.200.214:5555/v1.29/images/json

v1.29为api版本