docker 远程连接

痛定思痛。 2022-05-16 10:24 249阅读 0赞

> 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 --version
    Docker version 17.06.0-ce, build 02c1d87

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演示系统`Centos7`

[root@test1 docker]# uname -a
    Linux 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

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配置

cat /lib/systemd/system/docker.service

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[Unit]
    Description=Docker Application Container Engine
    Documentation=https://docs.docker.com
    After=network-online.target firewalld.service
    Wants=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 docker
    ExecStart=/usr/bin/dockerd
    ExecReload=/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=infinity
    LimitNPROC=infinity
    LimitCORE=infinity
    # Uncomment TasksMax if your systemd version supports it.
    # Only systemd 226 and above support this version.
    #TasksMax=infinity
    TimeoutStartSec=0
    # set delegate yes so that systemd does not reset the cgroups of docker containers
    Delegate=yes
    # kill only the docker process, not all processes in the cgroup
    KillMode=process
    # restart the docker process if it exits prematurely
    Restart=on-failure
    StartLimitBurst=3
    StartLimitInterval=60s
    
    [Install]
    WantedBy=multi-user.target

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将以上配置中的

ExecStart=/usr/bin/dockerd

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修改为

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

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重启docker网络

systemctl daemon-reload

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重启docker服务

systemctl restart docker

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