link in docker

–link in docker

容器A通过–link选项使用容器B的某个服务,docker-compose.yml 配置如下:

A:
  image: image_a
  links:
    - B:B
  ...

B:
  image: image_b
  ...

当容器B被重启后,A的link不会被自动更新,要一并重启A才行:

$ docker-compose restart B # A doesn't work
$ docker-compose restart A # it works well
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