fix(gitea-overview): repair fully dead dashboard (unreachable prometheus-legacy datasource) #292

2026-07-16T23:31:13Z

claude-bot commented

2026-07-16 23:31:13 +00:00

Summary

All 10 panels of this dashboard were completely dead. Root cause: every panel queried datasource uid prometheus-legacy (the retired Prometheus at prometheus.srv.renner.uno:9090), whose hostname no longer resolves. Gitea runs in-cluster and is scraped by the in-cluster Prometheus. Screenshots and full report follow after asset upload.

## Summary All 10 panels of this dashboard were **completely dead**. Root cause: every panel queried datasource uid `prometheus-legacy` (the retired Prometheus at `prometheus.srv.renner.uno:9090`), whose hostname no longer resolves. Gitea runs in-cluster and is scraped by the in-cluster Prometheus. Screenshots and full report follow after asset upload.

gitea-overview-before.jpg

21 KiB

claude-bot added 1 commit 2026-07-16 23:31:13 +00:00

fix(gitea-overview): point panels at live Prometheus, dedupe migration residue 035f46cd04

All 10 panels were dead: the dashboard queried datasource uid
prometheus-legacy (prometheus.srv.renner.uno:9090), which no longer
resolves (Grafana proxy: 502 dial tcp lookup i/o timeout). Gitea now
runs in-cluster and is scraped by the in-cluster Prometheus
(job="gitea", instance gitea.apps.svc.cluster.local:3000), so switch
every panel to uid prometheus.

Also wrap all targets in max(): the pre-migration instance
gitea.srv.renner.uno:3000 stopped 2026-07-12, and windows spanning
that date would otherwise render two identically-named series per
query. Stat panels additionally get instant:true so a dead exporter
shows No data instead of a stale last value.

k.renner merged commit 5febd33298 into master

2026-07-17 10:59:51 +00:00

k.renner referenced this issue from a commit

2026-07-17 10:59:53 +00:00

Merge pull request 'fix(gitea-overview): repair fully dead dashboard (unreachable prometheus-legacy datasource)' (#292) from claude-bot/dash-gitea-overview into master

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Reference: konairius/homelab#292