Description:

The dependencies of some of the beans in the application context form a cycle:

┌──->──┐
|  keycloakConfig (field private org.keycloak.adapters.KeycloakConfigResolver 
	org.keycloak.adapters.springsecurity.config.KeycloakWebSecurityConfigurerAdapter.keycloakConfigResolver)
└──<-──┘


Action:

Relying upon circular references is discouraged and they are prohibited by default. Update your application to 
remove the dependency cycle between beans. As a last resort, 
it may be possible to break the cycle automatically by setting spring.main.allow-circular-references to true.

이런 오류가 떴다.
그리고 서버 안켜짐

콘솔에 뜬대로

application.yml

spring:
  application:
    name: user-service
  main:
    allow-circular-references: true

spring.main.allow-circular-references를 true로 해주면 된다.
이제 잘 켜진다