Kubernetes Cookbook - Second Edition

How to do it...

There are two important parts to go through in the Jenkins setup:

1. Jenkins needs to run a docker command to build your application to compose your container image
2. Jenkins need to communicate with the Kubernetes master to control deployment

To achieve step 1, there is a tricky part that needs something like a Docker-in-Docker (dind). This is because Jenkins is run by Kubernetes as a pod (Docker container), and Jenkins also needs to invoke a docker command to build your application. It can be achieved by mounting /var/run/docker.sock from the Kubernetes node to the Jenkins pod that can communicate with Jenkins, the Kubernetes node, and the Docker daemon.

Docker-in-Docker and mounting /var/run/docker.sock have been described ...