apiVersion: monitoring.coreos.com/v1alpha1
kind: AlertmanagerConfig
metadata:
  name: config-example
  labels:
    alertmanagerConfig: example
spec:
  route:
    groupBy: ['alertname', 'job']
    groupWait: 30s
    groupInterval: 1m
    repeatInterval: 3h
    receiver: 'slack-monitoring'
  receivers:
  - name: 'slack-monitoring'
    slackConfigs:
    - channel: '#devops-monitoring'
      title: "K8S {{ range .Alerts }}{{ .Annotations.summary }}\n{{ end }}"
      text: "K8S {{ range .Alerts }}{{ .Annotations.description }}\n{{ end }}"
      sendResolved: true
      apiURL:
        name: 'slackapisecret'
        key: 'url'

---
apiVersion: v1
kind: Secret
type: Opaque
metadata:
  name: slackapisecret
stringData:
  url: 'https://hooks.slack.com/services/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'