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+# Home Lab Incident Reports
+
+---
+
+## 2026-04-03 — Immich public outage via VPS OOM
+
+### What happened
+- Immich still worked internally in the homelab
+- Public access failed first with HTTP 500, later with 502
+- Pangolin had been OOM-killed on the VPS
+- After that, Traefik could no longer resolve pangolin via Docker internal DNS, so it could not fetch dynamic config
+
+### Evidence
+```bash
+# Check for OOM events
+sudo dmesg -T | grep -i -E 'oom|out of memory|killed process'
+
+# Pangolin log showed SIGKILL
+docker logs pangolin
+
+# Traefik log showed:
+#   Get "http://pangolin:3001/api/v1/traefik-config"
+#   lookup pangolin on 127.0.0.11:53
+#   read: connection refused
+```
+
+### Root cause
+- **Primary cause:** VPS memory exhaustion
+- **Secondary cause:** broken Docker service discovery / network state after the OOM event
+
+### Fix
+```bash
+docker compose down
+docker compose up -d
+```
+
+### Follow-up actions
+- [ ] Add swap to VPS to prevent OOM cascade
+- [ ] Add memory monitoring/alerting on VPS
+- [ ] Consider adding Traefik health-check/config-refresh cron job as a resilience measure