apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: tuwunel-alerts
  namespace: matrix
  labels:
    role: alert-rules
    release: kube-prometheus-stack
spec:
  groups:
    - name: tuwunel
      rules:
        - alert: TuwunelDown
          expr: |
            kube_deployment_status_replicas_available{namespace="matrix", deployment="tuwunel"} == 0
          for: 2m
          labels:
            severity: critical
          annotations:
            summary: "Matrix homeserver (Tuwunel) is down"
            description: "Tuwunel is down — Matrix messaging, alertbot delivery, and Sol are all affected."

        - alert: SolDown
          expr: |
            kube_deployment_status_replicas_available{namespace="matrix", deployment="sol"} == 0
          for: 5m
          labels:
            severity: warning
          annotations:
            summary: "Sol is down"
            description: "Sol virtual librarian is not running."