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Monitoring, Logging, and Runtime Security

Monitoring, logging, and runtime security are essential components of a defense-in-depth strategy for Kubernetes. By continuously collecting and analyzing data from clusters, administrators can detect anomalies, unauthorized access, and potential attacks before they escalate.

This section provides guidance on effective observability and real-time security monitoring in Kubernetes environments.

Topics Covered​

Monitoring Kubernetes Clusters​

  • Use Prometheus for collecting cluster and application metrics.
  • Set up Grafana dashboards for real-time visualization of system health.
  • Configure alerts using Alertmanager to notify administrators of suspicious activities.

Logging Best Practices​

  • Aggregate logs from pods, nodes, and control plane components using Fluentd, Logstash, or Loki.
  • Store logs in a centralized and immutable logging system for auditability.
  • Implement log rotation and retention policies to manage storage efficiently.

Runtime Security​

Required knowledge for the CKS certification.

  • Use Falco to detect unexpected process executions, privilege escalations, and network anomalies.
  • Implement AppArmor or SELinux for process-level confinement and enforcement.
  • Enable audit logging in the Kubernetes API server to track security-related events.

Threat Detection and Incident Response​

  • Set up Intrusion Detection Systems (IDS) to monitor for malicious activity.
  • Automate incident response workflows using SIEM (Security Information and Event Management) solutions.
  • Conduct regular security audits to identify misconfigurations and vulnerabilities.

Next Steps​

Explore each topic in-depth to establish comprehensive observability and security within your Kubernetes cluster.

Last updated on by Itai Ganot