Layer 3 · self-hosting reality check
What it actually takes to self-host Uptime Kuma
The docs say 256 MB. In practice you want 1 GB. Here is the honest version — real requirements, real monthly cost, what you will be maintaining, and the one thing that catches people out.
Usually reached from Pingdom alternatives, where Uptime Kuma is one of the picks.
| RAM — documented minimum | 256 MB |
|---|---|
| RAM — what it really needs | 1 GB |
| CPU | 1 vCPU |
| Disk | Under 5 GB for most setups |
| Monthly cost | $6/mo — and it should live somewhere other than the infrastructure it monitors |
| Setup time | 15 minutes |
| How you install it | single container |
| Ongoing maintenance | Very low. |
| Where it stops scaling | Hundreds of checks on tiny hardware. Beyond that, notification fan-out is what strains first. |
The thing that catches people out
Running your uptime monitor on the same server, provider or region as the things it watches means an outage takes out the alerting too, and you find out from a customer. Put it on a different provider entirely — this is the one service where deliberately not consolidating is the correct call, and it costs six dollars.
When not to self-host Uptime Kuma
You need multi-region checks, an on-call rotation, or escalation policies. This is a monitor, not an incident platform.
Every guide here carries this section. A site that only ever tells you to self-host is selling something — the useful answer is sometimes no.
Other Layer 3 self-hosting guides
Common questions
- How much RAM does Uptime Kuma actually need?
- 1 GB in practice. The documented minimum is 256 MB, which is the figure at which the process starts rather than the figure at which it works under real use. 1 vCPU alongside it.
- What does self-hosting Uptime Kuma cost per month?
- $6/mo — and it should live somewhere other than the infrastructure it monitors This is commodity VPS pricing and excludes your time, which is the larger cost for most people — budget for very low.
- How long does it take to set up Uptime Kuma?
- 15 minutes, via single container.
- When should I NOT self-host Uptime Kuma?
- You need multi-region checks, an on-call rotation, or escalation policies. This is a monitor, not an incident platform.
- What is the most common mistake when self-hosting Uptime Kuma?
- Running your uptime monitor on the same server, provider or region as the things it watches means an outage takes out the alerting too, and you find out from a customer. Put it on a different provider entirely — this is the one service where deliberately not consolidating is the correct call, and it costs six dollars.