docker start問題

問題記錄：
docker.socket: Failed with result 'service-start-limit-hit'
docker.service: Service RestartSec=100ms expired, scheduling restart.
docker.service: Scheduled restart job, restart counter is at 3.
Stopped Docker Application Container Engine.
docker.service: Start request repeated too quickly.
docker.service: Failed with result 'exit-code'.
Failed to start Docker Application Container Engine.

解決辦法：

1.）docker啟動參數設置

vim /lib/systemd/system/docker.service
ExecStart=/usr/sbin/dockerd -H fd:// $DOCKER_OPTS

2.）重新加載配置

systemctl daemon-reload

3.）啟動docker

service docker start

4.)查看狀態

systemctl status docker.service

5.）查看錯誤日志

journalctl -xe
journaltctl -fu docker

6.)守護進程配置

vim /etc/docker/daemon.json
{
    "registry-mirrors": ["http://hub-mirror.c.163.com"],
    "insecure-registries":["http://mydomain.com"]
}

7.）修改完配置文件，需要reload

sudo systemctl daemon-reload
sudo systemctl restart docker.service

結論：經過層層排查，發現是daemon.json配置錯誤，一定要注意格式！！可以嘗試把這個文件備份，刪掉后重啟。