服務器重啟后，docker無法啟動
1、docker images，提示如下錯誤
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
經查是重啟服務器后，沒有啟動docker
2、嘗試啟動docker systemctl start docker，但是還是報錯
Job for docker.service failed because start of the service was attempted too often. See “systemctl status docker.service” and “journalctl -xe” for details.
To force a start use “systemctl reset-failed docker.service” followed by “systemctl start docker.service” again.
3、解決方法：
cd /etc/docker
mv daemon.json daemon.conf
systemctl restart docker
docker images
啟動成功，完美解決。