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Alerting: Adds support for multiple URLs in Alertmanager notifier (#24196)

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* Alerting: Adds support for multiple URLs in Alertmanager notifier

Adds support for multiple URLs in Alertmanager notifier following
alertmanager documentation for high availability setup.
Update the documentation for alertmanager notifier.

Closes #24195

Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>
Co-authored-by: bergquist <carl.bergquist@gmail.com>
This commit is contained in:
Victor Coutellier
2020-05-20 08:49:53 +02:00
committed by GitHub
parent 50b2f26d80
commit 3a0f2dc160
3 changed files with 61 additions and 22 deletions
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docs/sources/alerting/notifications.md
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@@ -196,6 +196,12 @@ Notifications can be sent by setting up an incoming webhook in Google Hangouts c
Squadcast helps you get alerted via Phone call, SMS, Email and Push notifications and lets you take actions on those alerts. Grafana notifications can be sent to Squadcast via a simple incoming webhook. Refer the official [Squadcast support documentation](https://support.squadcast.com/docs/grafana) for configuring these webhooks.
### Prometheus Alertmanager
Alertmanager handles alerts sent by client applications such as Prometheus server or Grafana. It takes care of deduplicating, grouping, and routing them to the correct receiver. Grafana notifications can be sent to Alertmanager via a simple incoming webhook. Refer to the official [Prometheus Alertmanager documentation](https://prometheus.io/docs/alerting/alertmanager) for configuration information.
> **Caution:** In case of a high-availability setup, do not load balance traffic between Grafana and Alertmanagers to keep coherence between all your Alertmanager instances. Instead, point Grafana to a list of all Alertmanagers, by listing their URLs comma-separated in the notification channel configuration.
## Enable images in notifications {#external-image-store}
Grafana can render the panel associated with the alert rule as a PNG image and include that in the notification. Read more about the requirements and how to configure