apiVersion: v1
kind: Secret
metadata:
  name: alertmanager-monitoring-kube-prometheus-alertmanager
  namespace: monitoring
type: Opaque
stringData:
  alertmanager.yaml: |
    global:
      resolve_timeout: 5m
      smtp_smarthost: 'mail.home.lan:25'
      smtp_from: 'alertmanager@home.lan'
      smtp_hello: 'kubernetes.home.lan'
      smtp_require_tls: false

    route:
      receiver: jay-email
      group_by:
        - namespace
        - alertname
        - severity
      group_wait: 30s
      group_interval: 5m
      repeat_interval: 4h
      routes:
        - receiver: "null"
          matchers:
            - alertname = "Watchdog"

    receivers:
      - name: "null"

      - name: jay-email
        email_configs:
          - to: 'jay@home.lan'
            send_resolved: true
            headers:
              From: 'Kubernetes Alertmanager <alertmanager@home.lan>'
              To: 'Jay <jay@home.lan>'
              Subject: '[Kubernetes] {{ .Status | toUpper }}: {{ .CommonLabels.alertname }}'

    inhibit_rules:
      - source_matchers:
          - severity = critical
        target_matchers:
          - severity = warning
        equal:
          - namespace
          - alertname

      - source_matchers:
          - severity = warning
        target_matchers:
          - severity = info
        equal:
          - namespace
          - alertname

      - source_matchers:
          - alertname = InfoInhibitor
        target_matchers:
          - severity = info
        equal:
          - namespace