cat /etc/run/docker.pidkill -9 pidrm /etc/run/docker.pid
vi /usr/lib/systemd/system/docker.service[Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target [Service] Type=notify ExecStart=/usr/bin/dockerd ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=infinity LimitNPROC=infinity TimeoutStartSec=0 Delegate=yes KillMode=process Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target
systemctl daemon-reloadsystemctl start docker.servicesystemctl enable docker.service #自动启动Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service。
原文：https://www.cnblogs.com/timlong/p/12992862.html