This configuration will send an alert once in a minute and if alertmanager stops working amixr will detect that it doesn't work and notify you about that.

1. Add the alert generating script to prometheus.yaml file Within prometheus it is trivial to create an expression that we can build a heartbeat with Amixr expr: vector(1)

   That expression will always return true. Here is an alert that leverages the previous expression to create a heartbeat alert

   
               groups:
               - name: meta
                   rules:
                   - alert: heartbeat
                     expr: vector(1)
                     labels:
                       severity: none
                     annotations:
                       description: This is heartbeat alert
                       summary: Alerting Amixr
           

2. Add receiver configuration to prometheus.yaml with the unique url from Amixr global

   
               ...
               route:
               ...
                   routes:
                   - match:
                       alertname: heartbeat
                     receiver: 'amixr-heartbeat'
                     group_wait: 0s
                     group_interval: 1m
                     repeat_interval: 50s
               receivers:
               - name: 'amixr-heartbeat'
               webhook_configs:
               - url: {{ heartbeat_url }}
                   send_resolved: false