DevOps: Puppet, Docker, and Kubernetes

Linking two or more containers

With containerization, we would like to create our stack by running services on different containers and then linking them together. In the previous chapter, we created a WordPress container by putting both a web server and database in the same container. However, we can also put them in different containers and link them together. Container linking creates a parent-child relationship between them, in which the parent can see selected information of its children. Linking relies on the naming of containers.

Getting ready

Make sure the Docker daemon is running on the host and you can connect through the Docker client.

How to do it…

1. Create a named container called centos_server:

   $ docker run -d -i -t --name centos_server ...