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Add Journal dashboard, fix Caddy metrics, and improve alerts

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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>
This commit is contained in:
Ullrich Schäfer 2026-04-12 16:00:00 +02:00
parent 1433997d5b
commit 37fb5fa1c9
5 changed files with 478 additions and 8 deletions
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7
apps/planner/app/lib/brouter.ts
View file

@ -68,12 +68,11 @@ export async function computeRoute(request: RouteRequest): Promise<EnrichedRoute
}
export class BRouterError extends Error {
constructor(
message: string,
public readonly statusCode: number,
) {
readonly statusCode: number;
constructor(message: string, statusCode: number) {
super(message);
this.name = "BRouterError";
this.statusCode = statusCode;
}
}