修改 Docker容器自动启动/不自动启动，挂载路径，存储位置

蔚落 2021-11-16 12:58 496阅读 0赞

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`

`我实际运行时，可以支持同时配置多个容器id，比如（其中container关键字可以忽略不写）`

docker update 87cd61ad7f7c f488b0479f24 2109903220ce 1fb346ea1a46 --restart=no

**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 ##

--------------------

*  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/de9c6501cdd3
        cp hostconfig.json hostconfig.json.bak
        cp 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
    
    ![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]
    
        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"
        
                      }
        
               },
    
    ![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

*  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 ##

--------------------

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 support
        Docker 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 stop
        cd /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 support
        Docker Root Dir: /usr/docker

[aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]: /images/20211116/e74ed432f6db43b7941440b9e98cec7f.png