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Health UI

As explained in Quarkus in Action

Health UI is a Quarkus development interface that displays the statuses and details of application health checks.

Health UI is a Quarkus Dev UI interface for viewing application health checks and their details. Enable it by adding the quarkus-smallrye-health extension and running the application in Dev mode. section 10.2.1

Use Health UI to inspect:

  • Combined liveness, readiness, startup, wellness, and grouped health checks. section 10.2.1

Inspecting inventory-service

Open http://localhost:8083/q/dev-ui, select the SmallRye Health card, and choose Health UI. A passing database check appears as UP. Stopping MySQL changes the application status to DOWN and exposes the connection failure. section 10.2.1

How Quarkus in Action covers it

How deep it goes
Demonstrates UI navigation, endpoint access, failure simulation, and custom checks without detailing UI internals.
Examples
Uses database connectivity, embedded gRPC status, and inventory-count wellness checks as concrete examples.
What it assumes
Requires a Quarkus application, the SmallRye Health extension, and Dev mode with its database service available.
What you can do after
Diagnose health-check failures through Dev UI status cards and corresponding JSON endpoint responses.
How it connects
Connects health checks with Dev UI, SmallRye Health, readiness, liveness, wellness, and HTTP health endpoints.
Cover of Quarkus in Action
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