Best practices for securing Kubernetes workloads

When securing workloads in Kubernetes, the principle of least privilege is key, granting each workload only the permissions it needs to perform its tasks. While we’ve already discussed this in the context of RBAC, the same principle applies to how we configure workload manifests and container specifications.

In this final section of the chapter, we’ll explore three essential areas for securing Kubernetes workloads:

• Security contexts: How to define privilege and access control settings at the Pod or container level, including configurations such as runAsUser, capabilities, and readOnlyRootFilesystem
• Pod Security Admission: How Kubernetes enforces security policies using Pod Security Standards (privileged, baseline, and restricted) to control Pod behavior during creation and updates
• Service accounts: Best practices for managing service accounts to securely authenticate Pods and control access to...