How to send Alerts in Prometheus - Alertmanager

Monitoring computers is very important and that should include alerts being sent out when something has gone wrong, but ideally even before a problem occurs

Now Prometheus does support alerting and you can even customise your own alerts

But it relies on a separate entity known as Alertmanager to actually send alerts to an email server for instance

And in this video we go over how to install and setup Alertmanager, how to configure Prometheus to use it, and how to create alerting rules in Prometheus

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For more technical information, including commands used, check out our blog post
https://www.techtutorials.tv/sections/management-and-monitoring/prometheus-how-to-send-alerts/

Useful links:
https://github.com/prometheus/alertmanager
https://prometheus.io/docs/alerting/latest/configuration/
https://prometheus.io/docs/prometheus/latest/querying/basics/#instant-vector-selectors
https://samber.github.io/awesome-prometheus-alerts/

Chapters
00:00 Intro
00:38 Assumptions
01:05 Install Alertmanager
03:15 Configure Alertmanager
08:03 Configure Prometheus
09:46 Instance Down Alert
13:10 Update Prometheus Container and Test
19:49 Expressions
23:02 Low Disk Space Alert and Rounding
28:15 Certificate Expiry Alert

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Видео How to send Alerts in Prometheus - Alertmanager канала Tech Tutorials - David McKone