Kubernetes + Private Docker Registry

Hi everyone!

Here's another guide on Docker and Kubernetes. This time we'll cover how to add a private docker regisrtry so that kubernetes can pull images from it.

The official guide is here https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/.

I'll give you a quicker overview.

Let's start by creating a secret that will hold our registry login credentials:

$ kubectl create secret docker-registry regcred --docker-server=<your-registry-server> --docker-username=<your-name> --docker-password=<your-pword> --docker-email=<your-email>
secret "regcred" created

Replace:

• <your-registry-server> with the address of your registry
• <your-name> with the login username
• <your-pword> with the password
• <your-email> with your email

... and we're done.

If we wanted to start a pod using an image stored in our private registry, we'd have to add the imagePullSecrets directive to our yaml, specifying which secret to use. In the case of the example:

apiVersion: v1
kind: Pod
metadata:
  name: private-reg
spec:
  containers:
  - name: private-reg-container
    image: <your-private-image>
  imagePullSecrets:
  - name: regcred