6 Communication in a Kubernetes cluster
This chapter covers
- How nodes communicate via CNI and the different CNIs available
- How Pod-to-Pod communication happens
- Types of Services in Kubernetes and when they are used
- Assigning IP addresses to Pods
- Communication via DNS and how to use CoreDNS
- Using Ingress and Ingress controllers
Many find that networking in Kubernetes is complex, but we will break it down fully in this chapter, especially since it’s 20% of the CKA exam. There are a few important concepts that will clear up a lot of confusion, and because we’ve covered how bridge networking works within containers, I think it will all start to come together. By the end of this chapter, you’ll know how Pods talk to each other within a cluster, ...
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