Docker(十七)-修改Docker容器啟動配置引數

吕金林發表於2024-04-24
Docker

有時候，我們建立容器時忘了新增引數 --restart=always ，當 Docker 重啟時，容器未能自動啟動，

現在要新增該引數怎麼辦呢，方法有二：

1、Docker 命令修改

docker container update --restart=always 容器名字

2、直接改配置檔案

首先停止容器，不然無法修改配置檔案

配置檔案路徑為：/var/lib/docker/containers/容器ID

在該目錄下找到一個檔案 hostconfig.json ，找到該檔案中關鍵字 RestartPolicy

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

修改後配置："RestartPolicy":{"Name":"always","MaximumRetryCount":0}

最後啟動容器。

修改docker容器的掛載路徑

  • 停止所有docker容器 
    sudo docker stop $(docker ps -a | awk '{ print $1}' | tail -n +2)
  • 停止docker服務 
    sudo service docker stop
  • 修改mysql路徑 
    cd ~
sudo cp -r mysql/ /home/server/
  • 備份容器配置檔案 
    cd /var/lib/docker/containers/de9c6501cdd3
cp hostconfig.json hostconfig.json.bak
cp config.v2.json config.v2.json.bak
  • 修改hostconfig的冒號前的配置路徑 
    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的配置路徑
    複製程式碼
    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"

              }

       },
    複製程式碼
  • 啟動docker服務 
     sudo service docker start
  • 啟動所有docker容器 
    sudo docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)

修改docker預設的儲存位置

docker 的所有images及相關資訊儲存位置為：/var/lib/docker

  • 檢視預設的docker儲存路徑 
    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服務 
    sudo service docker stop
cd /var/lib
  • 打包docker目錄 
    sudo tar -czvf /usr/docker.tar.gz docker/
cd /usr/
sudo tar -xzvf docker.tar.gz
  • 修改docker預設的儲存位置 
    sudo vim /etc/docker/daemon.json

{
    "graph": "/home/server/docker"
}
  • 啟動docker服務 
    sudo service docker start
  • 啟動所有docker容器 
    sudo docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)
  • 檢視修改後docker儲存路徑 
    docker info |grep 'Docker Root Dir'
    WARNING: No swap limit support
Docker Root Dir: /usr/docker


    　　原文：https://i.cnblogs.com/posts/edit

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