Tag: Kubernetes
All the articles with the tag "Kubernetes".
-
Istio ambient: a service mesh without sidecars
Istio's ambient mode reached GA and removes the main argument against service mesh — a sidecar in every pod. We cover the ztunnel + waypoint architecture, mTLS without restarts, and rolling out L7 only where it's needed.
-
Karpenter: just-in-time nodes and half the cluster bill
Cluster Autoscaler scales pre-sized node groups, Karpenter picks the right instance for the actual pending pods and collapses the cluster when idle. NodePool/NodeClass, consolidation, spot fallback, and the traps that block it — with a working manifest.
-
External Secrets Operator: Vault secrets in Kubernetes without copy-paste
External Secrets Operator syncs secrets from Vault and cloud Secret Managers straight into native Kubernetes Secrets. The SecretStore/ExternalSecret model, refreshInterval rotation, and a working Vault example.
-
Gateway API over Ingress: migrating before ingress-nginx dies
kubernetes/ingress-nginx hit End-of-Life on March 24, 2026 — the repo is frozen, no bugfixes, no security patches. A walkthrough of the Gateway API resource model, converting with ingress2gateway 1.0, and the migration traps, with a canary-routing example.