重命名docker-compose项目而不删除卷

Question

我想重命名一个docker-compose项目(即通过重命名目录或添加-p new_name到docker-compose).如果我这样做,我将删除所有旧容器以及所有旧容器.有没有办法保留卷并将它们附加到新的docker-compose容器？

例 docker-compose.yml

version: '3'

services:
  dashboard:
    build: custom_dashboard
    volumes:
      - dashboard:/var/lib/grafana
    ports:
      - 3000:3000
volumes:
  dashboard:

项目名称(和目录名称)是web,我想将其更改为grafana.卷名称是web_dashboard和将来的grafana_dashboard.

我可以手动完成,但我有一个非常庞大的docker-compose(但模块化)文件,有大约30个应用程序.

Answer 1

试试这个解决方法：

• 使用脚本创建具有新名称的卷的副本：

  #!/bin/bash
  
  #Author: Guido Diepen
  
  #Convenience script that can help me to easily create a clone of a given
  #data volume. The script is mainly useful if you are using named volumes
  
  
  #First check if the user provided all needed arguments
  if [ "$1" = "" ]
  then
          echo "Please provide a source volume name"
          exit
  fi
  
  if [ "$2" = "" ] 
  then
          echo "Please provide a destination volume name"
          exit
  fi
  
  
  #Check if the source volume name does exist
  docker volume inspect $1 > /dev/null 2>&1
  if [ "$?" != "0" ]
  then
          echo "The source volume \"$1\" does not exist"
          exit
  fi
  
  #Now check if the destinatin volume name does not yet exist
  docker volume inspect $2 > /dev/null 2>&1
  
  if [ "$?" = "0" ]
  then
          echo "The destination volume \"$2\" already exists"
          exit
  fi
  
  
  
  echo "Creating destination volume \"$2\"..."
  docker volume create --name $2  
  echo "Copying data from source volume \"$1\" to destination volume \"$2\"..."
  docker run --rm \
             -i \
             -t \
             -v $1:/from \
             -v $2:/to \
             alpine ash -c "cd /from ; cp -av . /to"
  

• 删除上一个卷

脚本归功于 gdiepen ，项目：https : //github.com/gdiepen/docker-convenience-scripts

Answer 2

version: '3'

services:
  dashboard:
    build: custom_dashboard
    container_name: ${CONTAINER_NAME}
    volumes:
      - dashboard:/var/lib/grafana
    ports:
      - 3000:3000
    environment:
      - CONTAINER_NAME
volumes:
  dashboard:

container_name像上面一样在您的服务中设置。然后，您必须container_name通过环境变量将新项目名称传递给参数，并将旧项目名称传递给参数-p，以保留旧卷与新容器名称和新项目名称。例如mv old_project new_project和CONTAINER_NAME=new_project docker-compose -p old_project up -d。