如何使用清单将容器VM上的Docker容器链接? [英] How to link docker containers on Container VM with an manifest?
问题描述
TLDR:是否可以将两个容器与容器清单链接?
我正在尝试移植Guestbook Sample应用程序从Google Container Engine文档到容器vm 。我在连接两个容器虚拟机时遇到麻烦,因此Web应用程序可以访问redis服务。
I'm trying to port the Guestbook Sample app from the Google Container Engine docs to a container vm. I'm having troubles to connect the two container vms so the web app can access the redis service.
如果我在docker命令行上使用了实例:
It works, if I'm using the docker command line on the instance:
启动该实例并ssh进入该实例:
start the instance and ssh into it:
gcloud compute instances create guestbook-vm --image container-vm --machine-type g1-small
gcloud ssh guestbook-vm
创建容器:
sudo docker run -d --name redis -p 6379:6379 dockerfile/redis
sudo docker run -d --name guestbook -p 3000:80 --link redis:redis -e "REDIS_MASTER_SERVICE_HOST=redis" -e "REDIS_MASTER_SERVICE_PORT=6379" brendanburns/php-redis
我正在使用--link将留言簿连接到redis容器。 这也可以通过容器清单来完成吗?
I'm using the --link to connect the guestbook to the redis container. Can this also be accomplished with the container manifest?
这是我的启动命令:
gcloud compute instances create guestbook-vm --image container-vm --machine-type g1-small --metadata-from-file google-container-manifest=containers.yaml
编辑:Alex使用127.0.0.1的解决方案效果很好,因此这是正确的容器。 yaml:
version: v1beta2
containers:
- name: redis
image: dockerfile/redis
ports:
- name: redis-server
containerPort: 6379
hostPort: 6379
- name: guestbook
image: brendanburns/php-redis
ports:
- name: http-server
containerPort: 80
hostPort: 3000
env:
- name: REDIS_MASTER_SERVICE_HOST
value: 127.0.0.1
- name: REDIS_MASTER_SERVICE_PORT
value: 6379
推荐答案
有容器清单中没有可用的链接参数,因此很遗憾,您不能那样做。
There is no link parameter available in the container manifest, so unfortunately you can't do it that way.
但是,您是否尝试过将REDIS_MASTER_SERVICE_HOST环境变量设置为127.0.0.1?我认为应该允许前端容器通过标准网络堆栈与redis容器进行对话。
However, have you tried just setting the REDIS_MASTER_SERVICE_HOST environment variable to 127.0.0.1? I believe that should allow the frontend container to talk to the redis container through the standard networking stack.
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