Spring boot client fails to register Spring boot admin (version 2.x) - spring

Question

I am running spring boot application with basic authentication enabled and spring boot admin with UI security enabled .
My spring boot client fails to register to the spring boot admin server . Below are the logs :
2018-08-23 15:17:09.676 DEBUG 4992 --- [gistrationTask1] o.s.web.client.RestTemplate : Created POST request for "http://localhost:9001/instances"
2018-08-23 15:17:09.699 DEBUG 4992 --- [gistrationTask1] o.s.web.client.RestTemplate : Setting request Accept header to [application/json, application/*+json]
2018-08-23 15:17:09.724 DEBUG 4992 --- [gistrationTask1] o.s.web.client.RestTemplate : Writing [Application(name=spring-boot-application, managementUrl=http://localhost:8001/relay/actuator, healthUrl=http://localhost:8001/relay/actuator/health, serviceUrl=http://localhost:8001/relay)] as "application/json" using [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter#12c0c0b3]
2018-08-23 15:17:09.864 DEBUG 4992 --- [gistrationTask1] s.n.www.protocol.http.HttpURLConnection : sun.net.www.MessageHeader#5953ec3b8 pairs: {POST /instances HTTP/1.1: null}{Accept: application/json}{Content-Type: application/json}{Authorization: Basic YWRtaW46YWRtaW4=}{User-Agent: Java/1.8.0_161}{Host: localhost:9001}{Connection: keep-alive}{Content-Length: 287}
2018-08-23 15:17:10.124 DEBUG 4992 --- [gistrationTask1] s.n.www.protocol.http.HttpURLConnection : sun.net.www.MessageHeader#126c0bea10 pairs: {null: HTTP/1.1 403}{Cache-Control: no-cache, no-store, max-age=0, must-revalidate}{Pragma: no-cache}{Expires: 0}{X-Content-Type-Options: nosniff}{X-Frame-Options: DENY}{X-XSS-Protection: 1 ; mode=block}{Content-Type: text/plain}{Transfer-Encoding: chunked}{Date: Thu, 23 Aug 2018 09:47:10 GMT}
2018-08-23 15:17:10.128 DEBUG 4992 --- [gistrationTask1] o.s.web.client.RestTemplate : POST request for "http://localhost:9001/instances" resulted in 403 (null); invoking error handler
2018-08-23 15:17:10.138 WARN 4992 --- [gistrationTask1] d.c.b.a.c.r.ApplicationRegistrator : Failed to register application as Application(name=spring-boot-application, managementUrl=http://localhost:8001/relay/actuator, healthUrl=http://localhost:8001/relay/actuator/health, serviceUrl=http://localhost:8001/relay) at spring-boot-admin ([http://localhost:9001/instances]): 403 null. Further attempts are logged on DEBUG level
Below are my webSecurity config class from admin server
#SpringBootApplication
#EnableAdminServer
#EnableAutoConfiguration
#Configuration
public class SpringStarterAdminApplication {
public static void main(String[] args) {
SpringApplication.run(SpringStarterAdminApplication.class, args);
}
// Added for spring boot security login ui for admin
public static class SecuritySecureConfig extends WebSecurityConfigurerAdapter {
private final String adminContextPath;
public SecuritySecureConfig(AdminServerProperties adminServerProperties) {
this.adminContextPath = adminServerProperties.getContextPath();
}
#Override
protected void configure(HttpSecurity http) throws Exception {
// #formatter:off
SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler();
successHandler.setTargetUrlParameter("redirectTo");
successHandler.setDefaultTargetUrl(adminContextPath + "/");
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()
.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())
.ignoringAntMatchers(
"/instances",
"/actuator/**"
);
// #formatter:on
}
}
Not sure what is preventing the client to register to admin Server .

Answer 1

The inner configuration class should be annotated with #Configuration too.
It's even better if you refactor it into a separate class.