How to enable health in Spring Boot Actuator - spring-boot

Question

I have to check whether my service / app works or not.
I've added dependency
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
<version>2.6.2</version>
</dependency>
and also tried to add management.endpoint.health.show-details: always to application.yml but it didn't help.
I tried to go to http://localhost:8080/actuator/health, http://localhost:8080/health but it returned 404 error.

Answer 1

You can try this code on your application.yaml. This is worked for Spring boot 2.6.7.
management:
endpoint:
health:
show-details: always
endpoints:
web:
exposure:
include: health

Answer 2

As you see, you have 404 both on
http://localhost:8080/actuator/health
and
http://localhost:8080/health
Reason for this is not because security is enabled, if security was enabled you will get 401 or 403.
You probably need to expose actuator endpoints in application.yaml file.
Something like this:
management:
endpoints:
web:
exposure:
include: "health,info"
And if you have security enabled, you need to write you own SecurityFilterChain implementation in which you will disable security on all Actuator endpoints, or in your case only on those that you exposed in your application.yaml file.
Example:
#Configuration
class ActuatorSecurityAutoConfiguration {
#Bean
SecurityFilterChain
surpassingActuatorSecurityFilterChain(HttpSecurity
httpSecurity) throws Exception {
return httpSecurity
.requestMatcher(EndpointRequest.toAnyEndpoint())
.authorizeRequests()
.anyRequest()
.permitAll()
.and().build();
}
}

Answer 3

By default Spring boot enables security for all actuator endpoints
You can disable that feature using below property
management.security.enabled=false
Henceforth, try to run the application and hit the endpoint
http://localhost:8080/actuator