codecentric / codecentric/spring-boot-admin

Bug: Instance reported as down even if it's up

Open
#4,599 5 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

type: bug
Dominant language
Java
Stars
12.9k
Forks
3.1k
Avg merge
19h 1m
Merged PRs (30d)
61

Description

Spring Boot Admin Server information

  • Version: 3.5.2

  • Spring Boot version: 3.5.5

  • Configured Security: None

  • Webflux or Servlet application: WebFlux

Client information

  • Spring Boot versions: 3.5.3

  • Used discovery mechanism: Eureka

  • Webflux or Servlet application: Servlet

Description

Hello.
I've the weird behaviour that an application is reported as DOWN in SBA even if its health endpoint reports it as UP.

Image

Moreover, I can see in the HTTP Exchanges view that the health has been indeed called and that it returned 200, but somehow it's not reflected in the status of the application.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No files, tests, or entry points are named. Start by reproducing the reported status mismatch with Spring Boot Admin 3.5.2, Spring Boot 3.5.5, a WebFlux server, and an Eureka-discovered Servlet client; trace how the 200 health response becomes the displayed status. Done means the instance is reported UP when its health endpoint returns UP.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, spring-boot
Domain
backend, observability
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.