Viktor Barzin c36b41eabc [monitoring] Scrape mailserver Dovecot exporter + near-limit alerts ... Port 9166 (`dovecot-metrics`) is exposed on the mailserver Service but nothing was scraping it. Added a static `mailserver-dovecot` scrape job to `extraScrapeConfigs` (we run `prometheus-community/prometheus`, not `kube-prometheus-stack`, so no ServiceMonitor CRDs are available). Two alerts in a new `Mailserver Dovecot` rule group: - `DovecotConnectionsNearLimit` fires at ≥42/50 IMAP connections for 5m (85% of `mail_max_userip_connections = 50`). - `DovecotExporterDown` fires if the scrape target is unreachable for 10m (catches pod restarts + network issues). Originally drafted as `kubernetes_manifest` ServiceMonitor + PrometheusRule on `mailserver-beta1` branch; that commit is abandoned because the CRDs aren't installed. This path is functionally equivalent and plans cleanly. Closes: code-61v		2026-04-19 00:24:12 +00:00
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monitoring	[monitoring] Scrape mailserver Dovecot exporter + near-limit alerts	2026-04-19 00:24:12 +00:00