Alerting is a critically important activity in the DevOps lifecycle. In this video I show you how to create a basic Grafana Alert using the legacy Grafana alerting system.
I am using node exporter on a cluster of Raspberry Pi's and Prometheus to scrape the metrics endpoints.
I walk you through the process of creating a Slack App that Grafana can use to send an alert message to a dedicated alerts channel.
After creating the Slack App, we create an Alert based off a Disk Usage metric (the percentage of disk space used on the Raspberry Pi).
Timestamps:
Introduction: 00:00
Slack App Creation: 00:40
Notification Channel Creation: 04:01
Alert Creation: 05:36
Alert Testing: 15:26
Grafana 8 Alerts and Conclusion: 16:50