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最近发现某台机器上的Docker服务无法开启，报如下错误： [root@localhost ~]# docker ps -a Cannot connect to the Docker daemon. Is 'docker -d' running on this host? [root@localhost ~]# service docker restart Redirecting to /bin/systemctl restart docker.service Job for docker.service failed. See 'systemctl status docker.service' and 'journalctl -xn' for details. 没找到对应的解决方法，只能进行重装了。以下附上Centos7下卸载docker的命令： [root@localhost ~]# yum list installed | grep docker Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast docker.x86_64 1.7.1-108.el7.centos @extras docker-selinux.x86_64 1.7.1-108.el7.centos @extras [root@localhost ~]# yum -y remove docker.x86_64 [root@localhost ~]# yum -y remove docker-selinux.x86_64
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