1. 更新yum

yum update

2. 安装docker

安装

yum install -y docker

修改镜像地址，编辑/etc/docker/daemon.json

{

"registry-mirrors": ["https://uulfe4bd.mirror.aliyuncs.com"]

}

systemctl start docker

排查错误

1.启动报错

The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.

2.查看错误日志

# systemctl status docker.service

● docker.service - Docker Application Container Engine

Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)

Active: failed (Result: exit-code) since 六 2018-04-21 01:34:30 PDT; 1min 1s ago

Docs: http://docs.docker.com

Process: 109164 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 --seccomp-profile=/etc/docker/seccomp.json $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY $REGISTRIES (code=exited, status=1/FAILURE)

Main PID: 109164 (code=exited, status=1/FAILURE)

CGroup: /system.slice/docker.service

4月 21 01:34:28 localhost.localdomain systemd[1]: Starting Docker Application Container Engine...

4月 21 01:34:28 localhost.localdomain dockerd-current[109164]: time="2018-04-21T01:34:28.627482523-07:00" level=info msg="libcontainerd: new...09176"

4月 21 01:34:29 localhost.localdomain dockerd-current[109164]: time="2018-04-21T01:34:29.647444993-07:00" level=warning msg="overlay2: the backing...

4月 21 01:34:30 localhost.localdomain dockerd-current[109164]: Error starting daemon: SELinux is not supported with the overlay2 graph drive...false)

4月 21 01:34:30 localhost.localdomain systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE

4月 21 01:34:30 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine.

4月 21 01:34:30 localhost.localdomain systemd[1]: Unit docker.service entered failed state.

4月 21 01:34:30 localhost.localdomain systemd[1]: docker.service failed.

Hint: Some lines were ellipsized, use -l to show in full.

3.解决方案