## Summary
- Replace per-request DNS resolution (variable-based `proxy_pass`) with static `upstream` blocks and `keepalive` connection pools
- Reuses TLS connections through the Tailscale tunnel instead of handshaking per request
- Add `mise run fly-reload` for nginx config reload without full redeploy (re-resolves upstream DNS)
## Trade-off
DNS is resolved at config load, not per-request. If Tailscale Ingress pods get new IPs (restart, reschedule), `mise run fly-reload` is needed. A Grafana alert will be added to detect this.
## Still TODO on this branch
- [ ] Grafana alert for upstream unreachable (triggers fly-reload reminder)
- [ ] Docs pass
- [ ] Deploy from branch and verify latency improvement
- [ ] Changelog fragment
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: #337
The 5-minute lookback window kept stale data from terminated pods
visible during rollouts, causing the alert to sit in Pending for
~5 minutes after every routine deployment. 60s still covers two
scrape cycles (30s interval) while clearing stale data much faster.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Reduced `for` from 30m to 5m and lookback window from 5m to 1m. The old
values caused alerts to linger long after apps returned to Synced state.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
## Summary
Mikado chain to replace `mise run services-check` with Grafana Unified Alerting backed by ntfy push notifications.
**Design:**
- Grafana Unified Alerting evaluates rules against Prometheus/Loki
- ntfy webhook contact point delivers iOS notifications
- Anti-noise policy: page once per 24h per alert group
- Every alert links to a runbook in `docs/how-to/alerts/`
- services-check eventually queries the alerting API instead of doing its own probes
**Chain (bottom-up):**
1. `configure-grafana-alerting-pipeline` — enable alerting, ntfy contact point, notification policy
2. `first-alert-and-runbook` — end-to-end proof of concept with blackbox probe failure
3. `port-services-check-alerts` — migrate all services-check probes to alert rules + runbooks
4. `refactor-services-check-to-query-alerts` — rewrite services-check to query Grafana API
5. `deploy-infra-alerting` — goal card
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: #303
