How to install Prometheus on Ubuntu 20.04 | VPS Tutorial

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Prometheus is a free and open-source monitoring and alerting tool that was initially used for monitoring metrics at SoundCloud back in 2012. It is written in the Go programming language.

Prometheus monitors and records real-time events in a time-series database. Since then it has grown in leaps and bounds and had been adopted by many organizations to monitor their infrastructure metrics. Prometheus provides flexible queries and real-time alerting which helps in quick diagnosis and troubleshooting of errors.

Prometheus comprises the following major components:

- The main Prometheus server for scraping and storing time-series data.
- Unique exporters for services such as Graphite, HAProxy, StatsD and so much more
- An alert manager for handling alerts
- A push gateway for supporting transient jobs
- Client libraries for instrumenting application code

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