Query engines

Control Plane → Engines lists the query engines of the platform in tabs for Trino, StarRocks and RisingWave (RisingWave arrives in a later phase).

There are two ways to add an engine:

• Add engine provisions a Trino or StarRocks cluster against a catalog warehouse and monitors its health. This needs a Kubernetes cluster; without one the platform logs kubernetes unavailable; engine provisioning disabled.
• Register external engine records a cluster you run yourself.

Register an external engine

Egret does not provision, restart or monitor a registered engine. It holds the record so that a policy profile can be bound to the engine and you can read the Ranger plugin configuration to install on it.

Field	Meaning
Name	Lower-case letters, digits and hyphens, up to 63 characters.
Engine type	Trino or StarRocks.
Host, Port	A host name or IP address (no scheme, port or path) and the HTTP port.
Plugin version	The Ranger plugin version. Egret proves migrations and explains access only for Trino with plugin 2.5.0 or 2.8.0 and StarRocks with 2.8.0 or 2.9.0; another version is recorded as you declare it and those features refuse.
Policy profile	Bind a profile now, or later from the engine's Settings tab. A profile can belong to one engine.