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2 articles
A practical comparison of Blue-Green and Canary deployment strategies. Covers rollback speed, operational complexity, traffic control, and how these patterns work in Kubernetes environments.
Build a complete CI/CD pipeline with GitHub Actions: test → build → Docker image → Kubernetes deployment. Includes real workflow examples.
1 articles
Every cause and fix for Docker permission denied errors. Covers /var/run/docker.sock access, volume mount permissions, and file permission issues inside containers.
2 articles
Knowing the concepts of blue-green and canary is not enough for production operations. This post explains a practical Argo Rollouts setup for analysis-based deployment, staged traffic shifting, automated rollback, Prometheus integration, and ingress-based progressive delivery on Kubernetes.
A practical guide to using Argo CD and GitOps in Kubernetes. Covers App of Apps, environment separation, drift detection, rollback strategy, and how GitOps reduces operational mistakes.
12 articles
Separate dev/staging/prod configuration with Kustomize overlays and manage the entire cluster as GitOps using ArgoCD's App of Apps pattern. The final installment in the Kubernetes Dev & Ops series.
Helm Chart structure design, environment separation with values files, safe deployment and rollback strategies. A practical guide to managing Helm systematically in production.
A practical guide to Kubernetes Service types, Ingress configuration, and controlling Pod-to-Pod traffic with NetworkPolicy. Design cluster-internal and external traffic flows with confidence.
When to use Kubernetes Deployment, StatefulSet, DaemonSet, Job, and CronJob — with criteria and real-world configurations. Covers key characteristics and operational considerations for each workload type.
Namespace isolation strategies and RBAC design principles for multi-team, multi-environment Kubernetes operations. A practical guide to maintaining least privilege while maximizing developer productivity.
Set up a local Kubernetes cluster with Kind and automate your development loop with Skaffold and Tilt. A practical guide to developing in a production-equivalent environment.
A practical guide to managing Kubernetes Secrets safely. Covers the difference from ConfigMaps, injection methods, Git storage strategies, External Secrets, Vault integration, rotation, and RBAC considerations.
A practical guide to Kubernetes monitoring with Prometheus and Grafana. Covers what metrics matter, how to think about alerts, and the common monitoring mistakes teams make in production.
Five root causes of CrashLoopBackOff and a step-by-step debugging approach. Essential kubectl commands and real-world resolution examples.
Step-by-step diagnosis of CrashLoopBackOff — from OOMKilled and missing config to liveness probe misconfigurations. Includes kubectl commands and real-world patterns.
A 34-item checklist for running Kubernetes clusters reliably in production. Organized by resources, availability, security, network, storage, monitoring, deploy process, and cost.
How to configure Kubernetes HPA, VPA, KEDA, and Cluster Autoscaler, and when to use each. From CPU/memory-based to custom metrics — with real-world configuration examples.