Skip to content

Alertmanager Microsoft Teams Notifications (Workflows / Power Automate)

Alertmanager MS Teams

Modern Microsoft Teams uses Power Automate / Workflows to process incoming webhooks. Prometheus Alertmanager v0.26+ includes native msteamsv2_configs to format and deliver alerts to Teams channels without third-party proxy containers.

Step 1. Create a Workflow Webhook in Microsoft Teams

  1. In your target Microsoft Teams channel, click ••• → Workflows.
  2. Search for and select "Post to a channel when a webhook request is received".
  3. Name your workflow (e.g. Prometheus-Alerts) and click Next.
  4. Select the target Team and Channel.
  5. Copy the generated Webhook URL.

Step 2. Configure Alertmanager msteamsv2_configs

alertmanager-teams.yaml 

alertmanager:
  config:
    receivers:
      - name: "null"
      - name: "msteams-alerts"
        msteamsv2_configs:
          - webhook_url: "https://prod-XX.westeurope.logic.azure.com:443/workflows/..."
            send_resolved: true
            title: '{{ .CommonLabels.severity | toUpper }}: {{ .CommonLabels.alertname }} ({{ .CommonLabels.cluster }})'
            text: |-
              **Summary**: {{ .CommonAnnotations.summary }}
              **Description**: {{ .CommonAnnotations.description }}
              **Namespace**: {{ .CommonLabels.namespace }}
              **Pod**: {{ .CommonLabels.pod }}
              **Severity**: {{ .CommonLabels.severity }}
    route:
      receiver: "msteams-alerts"
      group_by: ["alertname", "cluster", "severity"]
      group_wait: 30s
      group_interval: 5m
      repeat_interval: 4h