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#migration

2 stories

DevOps & CI/CD

Moving off ingress-nginx after its retirement: a Gateway API migration plan

Ryan Pham · Jan 21, 2026 · 5 min read

Kubernetes announced the retirement of ingress-nginx, with best-effort maintenance ending in March 2026. This is the plan we used to inventory annotations, map them to Gateway API, run both side by side and cut over host by host without downtime.

Banner: DNS migration with stale cached records sending traffic to an old server

Networking & DNS Bug Report

DNS migration incident: half our traffic hit the old server for a day

Daniel Tran · Jul 1, 2025 · 8 min read

We moved our app to a new host and switched DNS on a Saturday. A day later almost half of requests still reached the old server. A 24-hour TTL, a nameserver change with a 48-hour delegation TTL and an old zone left online kept stale answers alive. This is the postmortem.