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Knowledge base

Answers, error codes, and how-tos

Everything a search away: what realuptime is, what every error code means and how to fix it, and how to get each product doing useful work in minutes.

About realuptime

Who we are, what each product in the family does, how our probes measure, and the honesty principles the whole product is built on.

Error-code reference

Every RU-XXXX code the product can answer with: what it means, why you hit it, and the exact steps that fix it.

How-tos

Create your first monitor

From signup to a URL being checked from four regions, in about two minutes.

Install the monitor agent

Monitor hosts and services that the public probes cannot reach, plus server health metrics.

Create a status page

A public, per-region status page for your own customers, on your own domain if you like.

Get an API key

Programmatic access to checks, incidents, and status pages over REST and MCP.

Set up the errors SDK

Application error tracking: an ingest key, a few lines of SDK setup, and honest drop accounting.

Hit an error code?

Every refusal realuptime sends carries a stable RU- code: in API response bodies as a code field, and in on-screen messages in parentheses. Each code has its own page at /kb/errors/ru-XXXX with the meaning, common causes, and numbered fix steps. Start at the error-code reference.