使用 Docker-Compose 启动具有不同配置的容器的多个实例 [英] Using Docker-Compose to spin up multiple instances of a container with different configurations

问题描述

我知道您可以使用 docker-compose 和 scale 命令来启动多个容器.但是，它们都将使用相同的配置.

I understand that you can user docker-compose with the scale command to spin up multiple containers. However, they will all have the same configuration used.

是否可以在同一主机上以不同配置(不同的.yml文件)在同一主机上启动容器?

Is it possible to launch a container on the same host with different configurations (different .yml files) on the same host?

使用以下命令:

docker-compose -f dev.yml up -d
docker-compose -f qa.yml up -d

只有 qa.yml 容器会运行，这不是我想要的.

only the qa.yml container will be running, which is not what I want.

-- 编辑 --

这是我尝试运行这两个命令时发生的情况.

Here's what happens when I try running both commands.

$ docker-compose -f compose/dev.yml up -d
compose_mydocker_1 is up-to-date
$ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                  NAMES
905912df6e48        compose_mydocker  "/sbin/my_init"     2 days ago          Up 2 days           0.0.0.0:1234->80/tcp   compose_mydocker_1
$ docker-compose -f compose/qa.yml up -d
Recreating compose_mydocker_1...
$ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                  NAMES
3fc912201224        compose_mydocker  "/sbin/my_init"     5 seconds ago       Up 5 seconds        0.0.0.0:1235->80/tcp   compose_mydocker_1

我的 qa.yml 和 dev.yml 看起来像这样:

My qa.yml and dev.yml look like this:

mydocker: 
  build: ..

  ports:
    - "1234:80" #for dev.yml
   #- "1235:80" for qa.yml
  environment:
    - ENVIRONMENT=dev #and vice-versa for qa

  volumes:
    - ../assets/images:/var/www/assets

推荐答案

您需要做的是更改项目名称.默认情况下，compose 使用基于当前目录命名的项目.就您而言，您需要单独的环境，因此需要不同的项目名称.

What you need to do is change the project name. By default, compose uses a project named based on the current directory. In your case, you want separate environments, so you need different project names.

您可以在环境中使用 docker-compose -p 或设置 COMPOSE_PROJECT_NAME.

You can use either docker-compose -p <project_name> or set COMPOSE_PROJECT_NAME in the environment.

还有一些关于提供一种持久化项目名称的方法的讨论:https://github.com/docker/compose/issues/745

There is also some discussion about providing a way to persist the project name: https://github.com/docker/compose/issues/745

这篇关于使用 Docker-Compose 启动具有不同配置的容器的多个实例的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！