How to Send Alerts in Prometheus Using Alertmanager

Learn how to set up and configure Alertmanager for Prometheus in this comprehensive tutorial video. Discover the process of installing Alertmanager, configuring it to work with Prometheus, and creating custom alerting rules. Explore key topics including setting up an instance down alert, updating the Prometheus container, working with expressions, creating a low disk space alert with rounding, and implementing a certificate expiry alert. Gain practical knowledge to effectively monitor your systems and receive timely notifications for potential issues.

Intro
Assumptions
Install Alertmanager
Configure Alertmanager
Configure Prometheus
Instance Down Alert
Update Prometheus Container and Test
Expressions
Low Disk Space Alert and Rounding
Certificate Expiry Alert