Helm Archives - ITNotes

Deploying KubeVela on Kubernetes: Modern Application Delivery with Open Application Model (OAM)

July 17, 2026

After a painful 2 AM production incident caused by environment drift between staging and production Kubernetes clusters, I adopted KubeVela with the Open Application Model (OAM) to define applications once and deploy them consistently everywhere. This guide covers installation, OAM-based configuration with multi-environment policies and approval gates, and monitoring your deployments with CLI commands and Prometheus metrics.

DevOps

Argo CD ApplicationSet: Automate Multi-Cluster Kubernetes App Deployments at Scale

July 14, 2026

Argo CD ApplicationSet solves the multi-cluster app management problem by automatically generating Application resources from generators — turning hundreds of manual manifests into a single declarative spec. This guide walks through installation, List/Git/Matrix generator configuration, and monitoring your generated applications at scale.

DevOps

ExternalDNS on Kubernetes: Automatically Sync DNS Records to Cloudflare and Route53

July 13, 2026

Manually updating DNS records every time you deploy a Kubernetes service does not scale. ExternalDNS watches your Ingress and LoadBalancer resources and automatically keeps Cloudflare or Route53 in sync — no human intervention needed. This guide walks through installation, configuration for both providers, and how to verify and monitor the setup in production.

DevOps

Kubernetes Cost Monitoring with OpenCost: A Practical FinOps Guide for Cloud-Native Teams

June 23, 2026

OpenCost is a free, open-source CNCF tool that shows you exactly what each namespace and workload costs in your Kubernetes cluster — no vendor lock-in, no data leaving your infrastructure. This guide covers Helm installation, Prometheus integration, Grafana dashboards, and hands-on tips from real production use that help you find and cut cost waste fast.

Security

Automating SSL/TLS Certificate Lifecycle Management with cert-manager on Kubernetes

April 27, 2026

Manual SSL certificate management fails at scale — expiry dates get missed, secrets fall out of sync, and incidents happen over weekends. This guide walks through setting up cert-manager on Kubernetes to automate certificate issuance and renewal from both Let's Encrypt and a private internal CA, so you never chase an expiry date again.

DevOps

Self-Hosted GitHub Actions Runner on Kubernetes with Actions Runner Controller

April 25, 2026

Migrating GitHub Actions to self-hosted runners on Kubernetes using Actions Runner Controller (ARC) can cut CI/CD costs by 80% and eliminate queue delays. This guide walks through real production setup: Helm install, autoscaling config, Docker build strategies, and persistent caching — from someone who did it after a 2 AM build queue crisis.