Book Image

The DevOps 2.3 Toolkit

By : Viktor Farcic
Book Image

The DevOps 2.3 Toolkit

By: Viktor Farcic

Overview of this book

Building on The DevOps 2.0 Toolkit, The DevOps 2.1 Toolkit: Docker Swarm, and The DevOps 2.2 Toolkit: Self-Sufficient Docker Clusters, Viktor Farcic brings his latest exploration of the DevOps Toolkit as he takes you on a journey to explore the features of Kubernetes. The DevOps 2.3 Toolkit: Kubernetes is a book in the series that helps you build a full DevOps Toolkit. This book in the series looks at Kubernetes, the tool designed to, among other roles, make it easier in the creation and deployment of highly available and fault-tolerant applications at scale, with zero downtime. Within this book, Viktor will cover a wide range of emerging topics, including what exactly Kubernetes is, how to use both first and third-party add-ons for projects, and how to get the skills to be able to call yourself a “Kubernetes ninja.” Work with Viktor and dive into the creation and exploration of Kubernetes with a series of hands-on guides.
Table of Contents (18 chapters)
The End
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Upgrading the cluster manually

The process to upgrade the cluster depends on what we want to do.

If we'd like to upgrade it to a specific Kubernetes version, we can execute a similar process like the one we used to add a new worker node.

kops edit cluster $NAME  

Just as before, we are about to edit the cluster definition. The only difference is that this time we're not editing a specific instance group, but the cluster as a whole.

If you explore the YAML file in front of you, you'll see that it contains the information we specified when we created the cluster, combined with the kops default values that we omitted to set.

For now, we're interested in kubernetesVersion. Please find it and change the version from v1.8.4 to v1.8.5. Save and exit.

Now that we modified the desired state of the cluster, we can proceed with kops update.

kops update cluster $NAME ...