Torjus Håkestad ef8eeaa2f5 monitoring02: add VictoriaMetrics, vmalert, and Alertmanager ...

Set up the core metrics stack on monitoring02 as Phase 2 of the
monitoring migration. VictoriaMetrics replaces Prometheus with
identical scrape configs (22 jobs including auto-generated targets).

- VictoriaMetrics with 3-month retention and all scrape configs
- vmalert evaluating existing rules.yml (notifier disabled)
- Alertmanager with same routing config (no alerts during parallel op)
- Grafana datasources updated: local VictoriaMetrics as default
- Static user override for credential file access (OpenBao, Apiary)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-17 00:29:34 +01:00

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