DevOpsEngine updates, learning resources, and practical notes for engineers building cloud, DevOps, automation, Kubernetes, and platform engineering skills through hands-on examples.
DevOpsEngine updates, learning resources, and practical notes for engineers building cloud, DevOps, automation, Kubernetes, and platform engineering skills through hands-on examples.
Learn how to safely drain Kubernetes nodes before maintenance to ensure your applications remain available and the maintenance process is smooth. This guide covers core concepts, step-by-step instructions, and common pitfalls to avoid.
Learn how to use Karpenter for right-sized nodes on demand in Kubernetes. This before-and-after story covers the wrong way versus the production-ready way, from fundamentals to advanced understanding.
Learn how to diagnose and resolve API server connectivity issues in Kubernetes when kubectl commands hang. This guide covers core concepts, hands-on troubleshooting, and advanced topics for DevOps engineers.
Learn how to find and rotate TLS certificates in a Kubernetes cluster to prevent service disruptions and maintain security. This comprehensive guide covers everything from identifying expiring certificates to automating the process.
Learn how to expose TCP and UDP services in Kubernetes, including the underlying mechanics, hands-on examples, and best practices for production environments.
Learn how to securely grant cloud permissions to Kubernetes pods using ServiceAccounts and IAM Roles for Service Accounts (IRSA). This tutorial covers the fundamentals, hands-on setup, and best practices for a production-ready implementation.
Learn how to manage secrets in Kubernetes using Sealed Secrets and External Secrets Operator. This step-by-step guide covers the fundamentals, hands-on walkthrough, and advanced topics.
Kubernetes CronJobs can easily lead to resource contention and data corruption if overlapping instances are allowed. This guide explores the three concurrency policies—Allow, Forbid, and Replace—to help you choose the right strategy for your workloads. Learn how to implement deadlines, avoid common pitfalls, and ensure data integrity in production environments. Discover practical YAML examples and trade-offs for each approach.
Stop hardcoding pod IPs and fixing broken connections in Kubernetes. This guide contrasts the fragile ‘wrong way’ of exposing services with the robust production-ready approach using ClusterIP, NodePort, and LoadBalancer. Learn the mechanics behind kube-proxy, when to use each service type, and how to implement secure, scalable network architectures for your microservices.
Kubernetes Events as an Early Warning System
