Example slack alert for alertmanager

values.yaml

  ...
  config:
    global:
      resolve_timeout: 5m
      slack_api_url: "https://hooks.slack.com/services/abcdef/123456789...."
    receivers:
    - name: "slack"
      slack_configs:
      - api_url: 'https://hooks.slack.com/services/abcdef/123456789....'
        username: 'ClusterName'
        channel: '#monitoring'
        send_resolved: true
        color: '{{ if eq .Status "firing" }}danger{{ else }}good{{ end }}'
        title: "[{{ .Status | toUpper }}] {{ range .Alerts }}{{ .Annotations.summary }}\n{{ end }}"
        text: |-
          {{ range .Alerts }}*Description:* {{ .Annotations.description }}
          *Cluster:* ClusterName
          *Severity:* {{ .Labels.severity }}
          {{ end }}
        fallback: '{{ template "slack.default.fallback" . }}'
        icon_emoji: '{{ template "slack.default.iconemoji" . }}'
        icon_url: '{{ template "slack.default.iconurl" . }}'
    route:
      group_by:
      - job
      group_interval: 5m
      group_wait: 30s
      receiver: "slack"
      repeat_interval: 12h
      routes: []
    templates:
    - '/etc/alertmanager/config/*.tmpl'
    ...