How much RAM does Eclipse Mosquitto need?

Plan on 256 MB–512 MB 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 Eclipse Mosquitto plus your other workloads fit in RAM with room to spare.

Automation

A lightweight MQTT broker for IoT.

A small, fast message broker for sensors, devices and apps using the MQTT protocol.

Mosquitto is the standard MQTT broker for self-hosted IoT and automation, light enough for any VPS.

1
Provision a VPS
Choose a plan with room for your data as well as the app.
2
Install the stack
Install Single C binary.
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 Eclipse Mosquitto its own database user with rights only on its own schema.
Reverse-proxy Eclipse Mosquitto 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 Eclipse Mosquitto patched — most self-hosting incidents are unpatched software.

How much RAM does Eclipse Mosquitto need?: Plan on 256 MB–512 MB for typical use; add headroom if you expect many concurrent users.
What stack does Eclipse Mosquitto run on?: Single C binary.
Can I run other things on the same VPS?: Yes — size the plan so Eclipse Mosquitto plus your other workloads fit in RAM with room to spare.

Looking for something else? Popular alternatives include EMQX, NanoMQ, HiveMQ — browse all app guides.