Ubios-udapi-server File

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All the intelligence of the ubios-udapi-server is derived from its main configuration file: ubios-udapi-server.state . This file is a JSON-formatted document that defines every aspect of the device's network configuration.

The is the Swiss Army knife for serious Ubiquiti network automation. It turns your Dream Machine or Cloud Key from a simple GUI appliance into a programmable network fabric controller.

Understanding ubios-udapi-server : The Heart of Modern Ubiquiti Routing ubios-udapi-server

If you’ve ever dug into the internals of a Ubiquiti UniFi OS console (like the UDM Pro, UDR, or Cloud Key Gen2+), you’ve likely stumbled across a process called while running top or ps aux .

What it is

POST /graphql

: In some firmware versions, such as certain builds of UniFi OS 5.0.x , users have reported the process entering an "ioctl polling loop," causing sustained high CPU usage (up to 70% on a single core) and significantly reduced throughput .

At its core, the (UniFi OS Universal Data API Server) is a middleware daemon running on Ubiquiti’s UniFi OS consoles (like the Dream Machine Pro, Cloud Key Gen2+, or Network Video Recorders). Its primary function is to translate high-level API requests into low-level device commands.

If services are failing, the logs for ubios-udapi-server can be viewed via SSH using journalctl . This public link is valid for 7 days

The ubios-udapi-server.state file uses a schema that defines the device's network landscape in a structured way:

All without constantly opening SSH sessions.

sudo systemctl restart ubios-udapi-server Can’t copy the link right now

: A system daemon that continuously monitors configuration state changes.