---
apiVersion: v1
kind: Service
metadata:
  name: alertmanager
  labels:
    app.kubernetes.io/name: alertmanager
    app.kubernetes.io/component: alertmanager
spec:
  ports:
  - port: 9093
    name: alertmanager
  selector:
    app.kubernetes.io/name: alertmanager
    app.kubernetes.io/component: alertmanager

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: alertmanager
  labels:
    app.kubernetes.io/name: alertmanager
    app.kubernetes.io/component: alertmanager
spec:
  serviceName: alertmanager
  selector:
    matchLabels:
      app.kubernetes.io/name: alertmanager
      app.kubernetes.io/component: alertmanager
  template:
    metadata:
      labels:
        app.kubernetes.io/name: alertmanager
        app.kubernetes.io/component: alertmanager
    spec:
      containers:
      - name: alertmanager
        image: quay.io/prometheus/alertmanager:v0.26.0
        ports:
        - containerPort: 9093
          name: http
        readinessProbe: &probe
          httpGet:
            port: http
            path: /-/ready
          periodSeconds: 60
        startupProbe:
          <<: *probe
          periodSeconds: 1
          successThreshold: 1
          failureThreshold: 30
          timeoutSeconds: 1
        securityContext:
          runAsNonRoot: true
          readOnlyRootFilesystem: true
        volumeMounts:
        - mountPath: /etc/alertmanager
          name: config
          readOnly: true
        - mountPath: /alertmanager
          name: alertmanager
          subPath: data
      securityContext:
        fsGroup: 2093
        runAsGroup: 2093
        runAsNonRoot: true
        runAsUser: 2093
      volumes:
      - name: config
        configMap:
          name: alertmanager
  podManagementPolicy: Parallel
  volumeClaimTemplates:
  - apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
      name: alertmanager
      labels:
        app.kubernetes.io/name: alertmanager
        app.kubernetes.io/component: alertmanager
    spec:
      accessModes:
      - ReadWriteOnce
      resources:
        requests:
          storage: 500M