# Alert manager triggers web-hook repeatedly for same alert

**URL:** https://discuss.prometheus.io/t/alert-manager-triggers-web-hook-repeatedly-for-same-alert/181
**Category:** General Help/Support
**Created:** [April 29, 2021, 12:03pm UTC](https://discuss.prometheus.io/t/alert-manager-triggers-web-hook-repeatedly-for-same-alert/181 "2021-04-29T12:03:24Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![HariHaravelan](https://dub1.discourse-cdn.com/flex017/user_avatar/discuss.prometheus.io/hariharavelan/32/100_2.png) [@HariHaravelan](https://discuss.prometheus.io/u/HariHaravelan)
#### Post date: [April 29, 2021, 12:03pm UTC](https://discuss.prometheus.io/t/alert-manager-triggers-web-hook-repeatedly-for-same-alert/181/1 "2021-04-29T12:03:24Z")

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I have configured the alert manager rule to trigger alert when Prometheus metric changes from 0 to 1 It triggers a webhook alert upon metric changed from 0 to 1 But the alert manager keeps triggering webhook, duplicate alerts for the same metric change.

Is there a config to prevent silencing further alerts from the alert manager?

below is my alertmanager config

```auto
global:
  resolve_timeout: 15m
  http_config: {}
  smtp_hello: localhost
  smtp_require_tls: true
route:
  receiver: web.hook
  group_by:
  - ccu_code
receivers:
- name: web.hook
  webhook_configs:
  - send_resolved: true
    http_config: {}
    url: http://service:8080/alarms
    max_alerts: 0
templates: []

```

---

<div class="post-metadata">

### Author: ![Rakshitha](https://avatars.discourse-cdn.com/v4/letter/r/f0a364/32.png) [@Rakshitha](https://discuss.prometheus.io/u/Rakshitha)
#### Post date: [May 24, 2021, 8:07am UTC](https://discuss.prometheus.io/t/alert-manager-triggers-web-hook-repeatedly-for-same-alert/181/2 "2021-05-24T08:07:59Z")

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You can try changing the max\_alerts field to 1 if you just want it to fire once.