spring.security.user.name=admin
spring.security.user.password=secret

spring.boot.admin.discovery.enabled=true

management.endpoints.web.exposure.include=*
management.endpoints.web.cors.allowed-methods=GET,POST

@EnableWebSecurity
@Configuration
public class SecuritySecureConfig extends WebSecurityConfigurerAdapter {

    private static final Logger logger = (Logger) LoggerFactory.getLogger(SecuritySecureConfig.class);

    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");
    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(
                    adminContextPath + "/instances",
                    adminContextPath + "/actuator/**"
            );

    }

}

<dependencies>
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>de.codecentric</groupId>
        <artifactId>spring-boot-admin-starter-server</artifactId>
    </dependency>

    <dependency>
        <groupId>de.codecentric</groupId>
        <artifactId>spring-boot-admin-server-ui</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
    </dependency>

</dependencies>

spring.security.user.name=joe
spring.security.user.password=my-secret-password

spring.boot.admin.client.username=admin
spring.boot.admin.client.password=secret

spring.boot.admin.client.instance.metadata.user.name=admin
spring.boot.admin.client.instance.metadata.user.password=secret


spring.boot.admin.client.enabled=true

spring.boot.admin.client.auto-registration=true
spring.boot.admin.client.auto-deregistration=true

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-security</artifactId>
 </dependency>