docker异常报错Failed to start Docker Application Conta…

安装新版本docker的时候，发现启动不起来，因为以前使用这个镜像的时候直接启动了，也没有遇到过。也就谷歌了一下，发现是配置问题，因为以前没有遇到过，这里就记录一下，

[root@www.wulaoer.org ~]# systemctl status docker.service
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 一 2023-04-10 21:25:43 CST; 5s ago
     Docs: http://docs.docker.com
  Process: 15465 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 --init-path=/usr/libexec/docker/docker-init-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: 15465 (code=exited, status=1/FAILURE)
​
4月 10 21:25:41 swarm systemd[1]: Starting Docker Application Container En.....
4月 10 21:25:41 swarm dockerd-current[15465]: time="2023-04-10T21:25:41.847..."
4月 10 21:25:41 swarm dockerd-current[15465]: time="2023-04-10T21:25:41.850..."
4月 10 21:25:42 swarm dockerd-current[15465]: time="2023-04-10T21:25:42.8604...
4月 10 21:25:43 swarm dockerd-current[15465]: Error starting daemon: SELinu...)
4月 10 21:25:43 swarm systemd[1]: docker.service: main process exited, cod...RE
4月 10 21:25:43 swarm systemd[1]: Failed to start Docker Application Conta...e.
4月 10 21:25:43 swarm systemd[1]: Unit docker.service entered failed state.
4月 10 21:25:43 swarm systemd[1]: docker.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

虽然我是yum安装的docker，但是我的docker版本特别的旧，所以需要修改docker的配置文件。

[root@www.wulaoer.org ~]# vim /etc/sysconfig/docker
# /etc/sysconfig/docker
​
# Modify these options if you want to change the way the docker daemon runs
#OPTIONS='--selinux-enabled --log-driver=journald --signature-verification=false'
DNS='--selinux-enabled --log-driver=journald --signature-verification=false'
if [ -z "${DOCKER_CERT_PATH}" ]; then
    DOCKER_CERT_PATH=/etc/docker
fi

然后启动问题解决，