docker - 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将 -p new_name 添加到 docker-compose)。如果这样做，我将删除所有旧容器以及所有旧卷。有没有办法保留卷并将它们附加到新的 docker-compose 容器？

示例 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。卷名称为 web_dashboard 并将为 grafana_dashboard。

我可以手动完成，但我有一个非常大的 docker-compose(但 modularized)文件，其中包含大约 30 个应用程序。

Answer 1

试试这个变通方法:

• 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"
  

• 删除上一卷

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