37fb5fa1c9
Fix blind spot where Caddy 502 errors were invisible: the dashboards and alerts queried caddy_http_response_duration_seconds (upstream responses only), missing 502s that Caddy generates itself. Switch to caddy_http_request_duration_seconds (server-level, all responses). Add Journal Grafana dashboard with: 502 rate, response codes, request rate by route, latency percentiles, container restarts/memory/CPU, Node.js event loop lag and heap, and Loki log panels for errors and Caddy 5xx entries. Add color coding to Caddy status code panel (green=2xx, blue=3xx, yellow=4xx, red=5xx). Add log-based error rate panel to the overview dashboard. New alerts: container restart loop, PostgreSQL connections > 80, application crash log detection (Loki), and Caddy 502 rate. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> |
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