docker 远程连接

docker默认通讯方式只支持本地形式调用，不支持TCP远程，如何增加docker支持通过TCP方式管理docker，可通过配置文件形式，各个版本的方式配置不同，以下会针对某一个版本进行演示。

使用说明

演示版本

[root@test1 docker]# docker --versionDocker version 17.06.0-ce, build 02c1d87

演示系统Centos7

[root@test1 docker]# uname -aLinux test1 3.10.0-514.21.2.el7.x86_64 #1 SMP Tue Jun 20 12:24:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

配置

cat /lib/systemd/system/docker.service

[Unit]Description=Docker Application Container EngineDocumentation=https://docs.docker.comAfter=network-online.target firewalld.serviceWants=network-online.target[Service]Type=notify# 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 dockerExecStart=/usr/bin/dockerdExecReload=/bin/kill -s HUP $MAINPID# Having non-zero Limit*s causes performance problems due to accounting overhead# in the kernel. We recommend using cgroups to do container-local accounting.LimitNOFILE=infinityLimitNPROC=infinityLimitCORE=infinity# Uncomment TasksMax if your systemd version supports it.# Only systemd 226 and above support this version.#TasksMax=infinityTimeoutStartSec=0# set delegate yes so that systemd does not reset the cgroups of docker containersDelegate=yes# kill only the docker process, not all processes in the cgroupKillMode=process# restart the docker process if it exits prematurelyRestart=on-failureStartLimitBurst=3StartLimitInterval=60s[Install]WantedBy=multi-user.target

将以上配置中的

ExecStart=/usr/bin/dockerd

修改为

ExecStart=/usr/bin/dockerd -H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375

重启docker网络

systemctl daemon-reload 

重启docker服务

systemctl restart docker

即可进行本地或远程API调用