Introduction: Performing a Rolling Update

In this chapter, we’ll perform a zero-downtime rolling update on the app we’ve been working with, in the previous chapters. If you’re unsure what a zero-downtime rolling update is, great, you’re about to find out.

We’ll divide this chapter as follows.

• Pre-requisites

• Performing a rollout

You can follow all the examples in this chapter using either the course-provided local Kubernetes kind cluster or a Civo Cloud Kubernetes cluster we showed you how to get in the previous chapter. You can also use other setups.

Pre-requisites

If you’ve followed along in previous chapters, you’ll know that we already have a qsk-deploy Deployment running on the cluster managing five replicas.

If you haven’t followed along, complete these steps to get ready.

1. Get a Kubernetes cluster and configure kubectl

2. Clone the course’s GitHub repo

3. Deploy the sample app and Service

Use the following terminal to run the commands for this lesson.