Prometheus Alertmanager receiver that sends messages via Firebase Cloud Messaging

Configure the /alert/<topic> API endpoint in alertmanager.yml.

You may configure this webhook in multiple receivers push messages to different Firebase Cloud Messaging topics:

receivers: - name: 'webhook.all' webhook_configs: - url: 'http://alertmanager-webhook-fcm:9716/alert/all' - name: 'webhook.important' webhook_configs: - url: 'http://alertmanager-webhook-fcm:9716/alert/important'

There is a generic API endpoint that can be used to send simple notifications. It accepts a less comlex JSON format then alertmanager uses:

curl --header "Content-Type: application/json" \ --request POST \ --data '{"title":"The message title", "body":"The message body"}' \ http://localhost:9716/generic/your-topic

This webhook needs cloudmessaging.messages.create permission for your Firebase project.

You may want to create a custom IAM role with only this permission and assign a new service account to it. Download the service account JSON file and set the environment variable GOOGLE_APPLICATION_CREDENTIALS to its absolute path.

The container will need access to some root CA to verify Google's SSL certificates. You may want to mount your host certificates, llike:

version: "2" services: alertmanager-webhook-fcm: container_name: alertmanager-webhook-fcm image: jaymedh/alertmanager-webhook-fcm:v0.2 ports: - 9716:9716 environment: - GOOGLE_APPLICATION_CREDENTIALS=/etc/serviceAccountKey.json volumes: - /etc/ssl/certs:/etc/ssl/certs:ro - /serviceAccountKey.json:/etc/serviceAccountKey.json:ro restart: unless-stopped