I think 'webhook receiver' can help you. More information can refer doc https://prometheus.io/docs/alerting/latest/configuration/#webhook_config
This is an example of a webhook alert created based on blackbox_exporter's metric scraping.
- prometheus rule setting
You need to create rule(s) to trigger alert, defined a rule named 'http_health_alert' here as example.
groups:
- name: http
rules:
- alert: http_health_alert
expr: probe_success == 0
for: 3m
labels:
type: http_health
annotations:
description: Health check for {{$labels.instance}} is down
- Alertmanager setting
'match' is set to http_health_alert, the alert will be sent to'http://example.com/alert/receiver' via HTTP/POST method (I think you will prepare in advance).
The alert will post JSON format to the configured endpoint 'http://example.com/alert/receiver'. And you can also customize different receiving methods or receiving information in the endpoint/program for different label contents.
global:
route:
group_by: [alertname, env]
group_wait: 30s
group_interval: 3m
repeat_interval: 1h
routes:
- match:
alertname: http_health_alert
group_by: [alertname, env]
group_wait: 30s
group_interval: 3m
repeat_interval: 1h
receiver: webhook_receiver
receivers:
- name: webhook_receiver
webhook_configs:
- send_resolved: true
url: http://example.com/alert/receiver
- name: other_receiver
email_configs:
- send_resolved: true
to: xx
from: xxx