Kubernetes Security Best Practices

Why Kubernetes Security Matters

Kubernetes (K8s) is powerful, but without proper security, it can expose clusters to attacks, privilege escalations, and data breaches. Here are essential best practices for securing your K8s workloads.

🔒 Key Security Measures

1️⃣ Network Segmentation

• Use NetworkPolicies to restrict pod-to-pod communication.
• Implement Cilium or Calico for enhanced security.

2️⃣ RBAC & Least Privilege

• Apply Role-Based Access Control (RBAC) to limit permissions.
• Ensure no cluster-wide admin privileges unless necessary.

3️⃣ Secure Secrets Management

• Use Vault, SealedSecrets, or ExternalSecrets instead of storing secrets in ConfigMaps.

4️⃣ Image & Runtime Security

• Scan container images with Trivy before deployment.
• Implement PodSecurityPolicies (or Kyverno for newer versions).

Conclusion

Securing Kubernetes requires a proactive approach, leveraging network policies, RBAC, and secure secrets management. By applying these best practices, you can harden your cluster against common threats. 🔐