micrometer-registry-prometheus root path stopped working with spring boot 3

[pavelorehov]

Below worked fine with Spring Boot 2.7.11 and earlier, stopped working with Spring Boot 3.

http://host:8989/metrics
{"timestamp":"2023-05-15T08:17:22.903+00:00","status":404,"error":"Not Found","path":"/metrics/"}

Tested other health endpoint with root - works as expected.

management.server.port=8989
management.server.base-path=/metrics
management.endpoints.web.base-path=/
management.endpoints.web.path-mapping.prometheus=/

Works for health:
management.server.port=8989
management.server.base-path=/metrics
management.endpoints.web.base-path=/
management.endpoints.web.path-mapping.health=/

[bclozel]

Please raise this issue against Spring Boot, as this infrastructure is managed in the Spring Boot project directly.