–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