Docker是一种C/S结构，所以就会有客户端和服务端。Docker支持很多子命令，例如我们在命令行docker然后tab键会出来很多命令
当然docker工具很多，除了 docker 命令行工具，用户也可以通过 REST API 与服务器通信
Docker daemon是服务器组件，以 Linux 后台服务的方式运行。可以通过命令：systemctl status docker.service看到
Docker daemon 运行在 Docker host 上，负责创建、运行、监控容器，构建、存储镜像。
监听地址的配置：
默认docker daemon只能监听本地host，如果远程要访问，需要打开tcp监听，如下：
/etc/systemd/system/multi-user.target.wants/docker.service
[Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network.target docker.socket firewalld.service Requires=docker.socket [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 -H fd:// #上面这里如果改成这样就开启了监听远程所有端口：ExecStart=/usr/bin/dockerd -H fd:// -H tcp://0.0.0.0 ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=1048576 # Having non-zero Limit*s causes performance problems due to accounting overhead # in the kernel. We recommend using cgroups to do container-local accounting. 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 [Install] WantedBy=multi-user.target
重启服务端docker
systemctl daemon-reload systemctl restart docker.service
调试
可以通过在客户端通过H参数来指定服务器和info子命令来查看服务端信息
这里可以看到哦啊服务端运行情况
[email protected]:/etc/apt# docker -H 192.168.56.132 info Containers: 1 Running: 0 Paused: 0 Stopped: 1 Images: 1 Server Version: 17.03.1-ce Storage Driver: aufs Root Dir: /var/lib/docker/aufs Backing Filesystem: extfs Dirs: 9 Dirperm1 Supported: true Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge host macvlan null overlay Swarm: inactive Runtimes: runc Default Runtime: runc Init Binary: docker-init containerd version: 4ab9917febca54791c5f071a9d1f404867857fcc runc version: 54296cf40ad8143b62dbcaa1d90e520a2136ddfe init version: 949e6fa Security Options: apparmor seccomp Profile: default Kernel Version: 4.4.0-31-generic Operating System: Ubuntu 16.04.1 LTS OSType: linux Architecture: x86_64 CPUs: 2 Total Memory: 3.842 GiB Name: d1 ID: SQ7Y:TBJA:LS5G:IQNB:CIHC:6T2D:J22X:F3QK:7AS2:7KLN:NIIQ:JLXY Docker Root Dir: /var/lib/docker Debug Mode (client): false Debug Mode (server): false Registry: https://index.docker.io/v1/ WARNING: No swap limit support Experimental: false Insecure Registries: 127.0.0.0/8 Registry Mirrors: http://febb9aec.m.daocloud.io Live Restore Enabled: false
时间： 2024-12-16 22:54:36