5-alertmanager.yml

apiVersion: v1
kind: ConfigMap
metadata:
  name: alertmanager-config
data:
  config.yml: |-
    global:
      # The smarthost and SMTP sender used for mail notifications.
      smtp_smarthost: 'localhost:25'
      smtp_from: 'alertmanager@example.org'
    route:
      receiver: 'default-receiver'
      group_by: ['alertname', 'cluster']
      group_wait: 30s
      group_interval: 5m
      repeat_interval: 3h
      routes:
      - receiver: pagerduty-receiver
        match:
          severity: critical
      - receiver: email-receiver
        match:
          severity: major
    receivers:
    - name: 'pagerduty-receiver'
      pagerduty_configs:
      - service_key: <some_key>
    - name: 'email-receiver'
      email_configs:
      - to: 'issues@example.com'
    - name: 'default-receiver'
      email_configs:
      - to: 'alerts_spam@example.com'
---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: alertmanager
spec:
  replicas: 1
  revisionHistoryLimit: 0
  selector:
    matchLabels:
      app: alertmanager
  strategy:
    rollingUpdate:
      maxSurge: 0
  template:
    metadata:
      name: alertmanager
      labels:
        app: alertmanager
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "9093"
    spec:
      containers:
      - name: alertmanager
        image: prom/alertmanager:v0.14.0
        args:
          - '--config.file=/etc/alertmanager/config.yml'
          - '--storage.path=/alertmanager'
        volumeMounts:
        - name: config
          mountPath: /etc/alertmanager
        ports:
        - name: web
          containerPort: 9093
        livenessProbe:
          httpGet:
            path: /-/healthy
            port: alertmanager
        resources:
          limits:
            memory: 512Mi
      volumes:
      - name: config
        configMap:
          name: alertmanager-config

---

apiVersion: v1
kind: Service
metadata:
  labels:
    name: alertmanager
  name: alertmanager
spec:
  type: LoadBalancer
  selector:
    app: alertmanager
  ports:
  - name: alertmanager
    protocol: TCP
    port: 9093
    targetPort: web