Docker(十七)-修改Docker容器启动配置参数

有时候，我们创建容器时忘了添加参数 --restart=always ，当 Docker 重启时，容器未能自动启动，

现在要添加该参数怎么办呢，方法有二：

1、Docker 命令修改

docker container update --restart=always 容器名字

2、直接改配置文件

首先停止容器，不然无法修改配置文件

配置文件路径为：/var/lib/docker/containers/容器ID

在该目录下找到一个文件 hostconfig.json ，找到该文件中关键字 RestartPolicy

修改前配置："RestartPolicy":{"Name":"no","MaximumRetryCount":0}

修改后配置："RestartPolicy":{"Name":"always","MaximumRetryCount":0}

最后启动容器。

 

修改docker容器的挂载路径

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• 停止所有docker容器

  sudo docker stop $(docker ps -a | awk '{ print $1}' | tail -n +2)

• 停止docker服务

  sudo service docker stop

• 修改mysql路径

  cd ~sudo cp -r mysql/ /home/server/

• 备份容器配置文件

  cd /var/lib/docker/containers/de9c6501cdd3cp hostconfig.json hostconfig.json.bakcp config.v2.json config.v2.json.bak

• 修改hostconfig的冒号前的配置路径

  vi hostconfig.json"Binds": ["/home/server/mysql/conf/my.cnf:/etc/mysql/my.cnf", "/home/server/mysql/logs:/logs", "/home/server/mysql/data:/mysql_data"],

• 修改config的Source的配置路径

  vi config.v2.json"MountPoints": {  "/etc/mysql/my.cnf": { "Source": "/home/server/mysql/conf/my.cnf", "Destination": "/etc/mysql/my.cnf", "RW": true, "Name": "", "Driver": "", "Relabel": "", "Propagation": "rprivate", "Named": false, "ID": ""  },  "/logs": { "Source": "/home/server/mysql/logs", "Destination": "/logs", "RW": true, "Name": "", "Driver": "", "Relabel": "", "Propagation": "rprivate", "Named": false, "ID": ""  },  "/mysql_data": { "Source": "/home/server/mysql/data", "Destination": "/mysql_data", "RW": true, "Name": "", "Driver": "", "Relabel": "", "Propagation": "rprivate", "Named": false, "ID": ""  },  "/var/lib/mysql": { "Source": "", "Destination": "/var/lib/mysql", "RW": true, "Name": "85d91bff7012b57606af819480ce267449084e81ab386737c80ace9fe75f6621", "Driver": "local", "Relabel": "", "Propagation": "", "Named": false, "ID": "897cd0152dd152166cb2715044ca4a3915a1b66280e0eb096eb74c2d737d7f77"  }},

• 启动docker服务

   sudo service docker start

• 启动所有docker容器

  sudo docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)

   

修改docker默认的存储位置

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docker 的所有images及相关信息存储位置为：/var/lib/docker

• 查看默认的docker存储路径

  docker info |grep 'Docker Root Dir'
  WARNING: No swap limit supportDocker Root Dir: /var/lib/docker

• 停止所有docker容器

  sudo docker stop $(docker ps -a | awk '{ print $1}' | tail -n +2)

• 停止docker服务

  sudo service docker stopcd /var/lib

• 打包docker目录

  sudo tar -czvf /usr/docker.tar.gz docker/cd /usr/sudo tar -xzvf docker.tar.gz

• 修改docker默认的存储位置

  sudo vim /etc/docker/daemon.json{"graph": "/home/server/docker"}

• 启动docker服务

  sudo service docker start

• 启动所有docker容器

  sudo docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)

• 查看修改后docker存储路径

  docker info |grep 'Docker Root Dir'
  WARNING: No swap limit supportDocker Root Dir: /usr/docker