Add Prometheus and Alertmanager configurations: implement custom rules, alerting, and Telegram notifications

2025-10-04 18:05:10 +02:00
parent 7cad175406
commit 0d3fb56f78
23 changed files with 416 additions and 235 deletions
@@ -0,0 +1,13 @@
+{{/* Always produce a non-empty message. Handles single or multiple firing alerts and missing username. */}}
+{{ if gt (len .Alerts.Firing) 1 -}}
+<b>{{ len .Alerts.Firing }} logins</b> on {{ with .CommonLabels.cluster }}<b>{{ . }}</b>{{ else }}<b>unknown host</b>{{ end }}:
+{{- range .Alerts.Firing }}
+• {{ with .Labels.username }}<b>{{ . }}</b>{{ else }}<i>unknown</i>{{ end }} — Source: <code>{{ with .Labels.source }}{{ . }}{{ else }}?{{ end }}</code>{{ with .Labels.method }}, Method: <code>{{ . }}</code>{{ else }}, Method: <code>?</code>{{ end }}
+{{- end }}
+{{ else if eq (len .Alerts.Firing) 1 -}}
+{{ $a := index .Alerts.Firing 0 -}}
+<b>Login:</b> {{ with $a.Labels.username }}<b>{{ . }}</b>{{ else }}<i>unknown</i>{{ end }} on <b>{{ $a.Labels.cluster }}</b>
+Source: <code>{{ with $a.Labels.source }}{{ . }}{{ else }}?{{ end }}</code>{{ with $a.Labels.method }}, Method: <code>{{ . }}</code>{{ else }}, Method: <code>?</code>{{ end }}
+{{ else -}}
+<b>Login detected</b> — details unavailable.
+{{ end -}}