Spring Boot Admin uses HTTP instead of HTTPS Actuator Endpoints

Question

After the registration at the Spring Boot Admin (SBA) Server, some actuators of the clients get adressed with http://springapplication.com/actuator instead of https://springapplication.com/actuator. Why does it change the endpoints to HTTP and doesn´t stay at HTTPS? Is it customizable?

Here are some Logs and the Java/YML-Files.

Logs:

2018-07-02 06:13:27.683  INFO 3194 --- [-client-epoll-7] d.c.b.a.server.services.StatusUpdater    : Couldn't retrieve status for Instance(id=0d47f12b0a94, version=57, registration=Registration(name=springbootapplication-Name, managementUrl=https://springbootapplication.com/actuator, healthUrl=https://springbootapplication.com/actuator/health, serviceUrl=https://springbootapplication.com, source=http-api), registered=true, statusInfo=StatusInfo(status=UP, details={}), statusTimestamp=2018-07-02T05:06:08.423Z, info=Info(values={}), endpoints=Endpoints(endpoints={httptrace=Endpoint(id=httptrace, url=http://springbootapplication.com/actuator/httptrace), flyway=Endpoint(id=flyway, url=http://springbootapplication.com/actuator/flyway), loggers=Endpoint(id=loggers, url=http://springbootapplication.com/actuator/loggers), health=Endpoint(id=health, url=https://springbootapplication.com/actuator/health), env=Endpoint(id=env, url=http://springbootapplication.com/actuator/env), heapdump=Endpoint(id=heapdump, url=http://springbootapplication.com/actuator/heapdump), scheduledtasks=Endpoint(id=scheduledtasks, url=http://springbootapplication.com/actuator/scheduledtasks), mappings=Endpoint(id=mappings, url=http://springbootapplication.com/actuator/mappings), beans=Endpoint(id=beans, url=http://springbootapplication.com/actuator/beans), configprops=Endpoint(id=configprops, url=http://springbootapplication.com/actuator/configprops), threaddump=Endpoint(id=threaddump, url=http://springbootapplication.com/actuator/threaddump), metrics=Endpoint(id=metrics, url=http://springbootapplication.com/actuator/metrics), conditions=Endpoint(id=conditions, url=http://springbootapplication.com/actuator/conditions), auditevents=Endpoint(id=auditevents, url=http://springbootapplication.com/actuator/auditevents), info=Endpoint(id=info, url=http://springbootapplication.com/actuator/info), jolokia=Endpoint(id=jolokia, url=http://springbootapplication.com/actuator/jolokia)}), buildVersion=null)

Application.yml (Server):

server:
  port: 5100
spring: 
  security:
    user:
      name: admin
      password: password

SecuritySecureConfig.java (Server):

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;

import de.codecentric.boot.admin.server.config.AdminServerProperties;

@Configuration
public class SecuritySecureConfig extends WebSecurityConfigurerAdapter {
    private final String adminContextPath;

    public SecuritySecureConfig(AdminServerProperties adminServerProperties) {
        this.adminContextPath = adminServerProperties.getContextPath();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler();
        successHandler.setTargetUrlParameter("redirectTo");

        http.authorizeRequests().antMatchers(adminContextPath + "/assets/**").permitAll()
                .antMatchers(adminContextPath + "/login").permitAll().anyRequest().authenticated().and().formLogin()
                .loginPage(adminContextPath + "/login").successHandler(successHandler).and().logout()
                .logoutUrl(adminContextPath + "/logout").and().httpBasic().and().csrf().disable();
    }
}

SpringBootAdminApplication.java (Server):

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.PropertySource;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;

import de.codecentric.boot.admin.server.config.EnableAdminServer;

@EnableAutoConfiguration
@EnableWebSecurity
@EnableAdminServer
@SpringBootApplication(scanBasePackages = "administration")
@PropertySource(value = "META-INF/build-info.properties", ignoreResourceNotFound = true)
public class SpringBootAdminApplication {

    private static final Logger log = LoggerFactory.getLogger(SpringBootAdminApplication.class);

    public static void main(final String[] args) {
        SpringApplication.run(SpringBootAdminApplication.class, args);
    }
}

Application.yml (Client):

spring:
  application:
    name: springapplication
  boot:
    admin:
      client:
        username: ${application.security.usernameAdmin}
        password: ${application.security.passwordAdmin}
        url: "https://springBootAdminServerURL.com"
        instance:
          service-base-url: https://http://springapplication.com/
          metadata:
            user.name: ${application.security.usernameAdmin}
            user.password: ${application.security.passwordAdmin}                 
management:
  endpoints:
    web:
      exposure:
        include: "*"
application:
  security:
    usernameAdmin: admin
    passwordAdmin: password

Answer 1

I had the same problem. Look at your applications /actuator endpoint. Is it reporting urls as http? It did for me, even if health used https. What solved it for me was adding server.use-forward-headers=true which adds all X-Forwarded-*, including the X-Forwared-Proto that identifies scheme (http/https).

Remember if your app is behind a reverse proxy like NGINX, you'd also need to configure this. Example for NGINX

location / {
  proxy_set_header   X-Forwarded-Proto $scheme;
  ...
}

Answer 2

Need correction in the config file for below property which signifies as

Base url for computing the service-url to register with. The path is inferred at runtime, and appended to the base url.

spring.boot.admin.client.instance.service-base-url


instance:
          service-base-url: https://springapplication.com/