How much RAM does Prometheus need?

Plan on 2–4 GB for typical use; add headroom if you expect many concurrent users.

Can I run other things on the same VPS?

Yes — size the plan so Prometheus plus your other workloads fit in RAM with room to spare.

Networking

A metrics database and alerting toolkit.

Scrape metrics from your services, store time-series data and fire alerts via Alertmanager.

Prometheus is the de-facto standard for modern monitoring, and self-hosting keeps metrics and alerts in-house.

1
Provision a VPS
Choose a plan with room for your data as well as the app.
2
Install the stack
Install Single Go binary + exporters.
3
Deploy the application
Follow the project’s official install guide for your distribution.
4
Enable HTTPS
Serve it on your own domain behind a reverse proxy with a certificate.
5
Back it up
Schedule a database dump plus a copy of any uploaded files to an off-box location.

Give Prometheus its own database user with rights only on its own schema.
Reverse-proxy Prometheus and terminate TLS at the proxy so certificates are managed in one place.
Take a VPS snapshot before major upgrades so you can roll back cleanly.
Keep Prometheus patched — most self-hosting incidents are unpatched software.

How much RAM does Prometheus need?: Plan on 2–4 GB for typical use; add headroom if you expect many concurrent users.
What stack does Prometheus run on?: Single Go binary + exporters.
Can I run other things on the same VPS?: Yes — size the plan so Prometheus plus your other workloads fit in RAM with room to spare.

Looking for something else? Popular alternatives include VictoriaMetrics, InfluxDB, Zabbix — browse all app guides.