Docker Compose：卷已声明为外部卷，但找不到 [英] Docker Compose: Volume declared as external, but could not be found

问题描述

从docker运行外部卷样本yml撰写 v3文档给出我出现以下错误：

Running the external volume sample yml from docker compose v3 docs gives me the following error:

ERROR: Volume data declared as external, but could not be found. Please create the volume manually using `docker volume create --name=data` and try again.

这是yml代码：

version: '2'

services:
  db:
    image: postgres
    volumes:
      - data:/var/lib/postgresql/data

volumes:
  data:
    external: true

我在Windows 10上运行它。也尝试将版本设置为 3，但出现了相同的错误。

I`m running it on windows 10. Also tried to set version to '3' but got the same error.

推荐答案

根据错误消息的说明，您需要通过运行以下命令来创建卷：

As the error message specifies, you need to create the volume by running:

docker volume create data

在docker compose中将卷声明为外部卷时，表示该卷先前已创建后，您只需在撰写文件中引用它即可。

When you declare a volume as external in docker compose, it means that the volume has been previously created and you are just referencing it in the compose file.

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