Chapter 19: Advanced Techniques for Scheduling Pods

At the beginning of the book, in Chapter 2, Kubernetes Architecture – From Docker Images to Running Pods, we explained the principles behind the Kubernetes scheduler (kube-scheduler) control plane component and its crucial role in the cluster. In short, its responsibility is to schedule container workloads (Kubernetes Pods) and assign them to healthy worker Nodes that fulfill the criteria required for running a particular workload.

This chapter will cover how you can control the criteria for scheduling Pods in the cluster. We will especially dive deeper into Node affinity, taints, and tolerations for Pods. We will also take a closer look at scheduling policies, which give kube-scheduler flexibility in how it prioritizes Pod workloads. You will find all of these concepts important in running production clusters at cloud scale.

In this chapter, we will cover the following topics:

• Refresher – What is kube...