Securing a Kubernetes Cluster – Best Practices

Securing a Kubernetes cluster is essential to prevent unauthorized access, data breaches, and disruptions. By implementing robust security measures, you can protect sensitive data and ensure smooth operation. This section outlines guidelines and best practices to help you secure your cluster against both accidental and malicious threats.

Certain concepts of security that will be discussed in this chapter have already been touched upon in Chapter 18, Security in Kubernetes. Here, we revisit those points to emphasize those as part of the Kubernetes best practices.

Controlling Access to the Kubernetes API

Since Kubernetes relies heavily on its API, controlling and limiting access is the first step in securing your cluster:

• Use TLS for API Traffic: Kubernetes encrypts API communication by default with TLS. Most installation methods handle the necessary certificates automatically. However, administrators should...