title: Health endpoint not working in spring-boot-actuator service
body: <p>Hi I am using spring boot version - 2.0.0.RC1. I have simple service running @port 9400. </p>
  
  <p>My application.properties have below configuration:</p>
  
  <pre><code>spring.main.banner-mode = CONSOLE
  spring.profiles.active  = ${profile:local}
  
  server.compression.enabled = true
  server.compression.min-response-size = 1
  server.compression.mime-types = application/json,application/xml,text/xml,text/plain
  
  banner.charset              = UTF-8
  
  management.endpoints.health.show-details=true
  management.server.address: 127.0.0.1
  management.endpoints.web.expose: health,info,metrics,mappings,trace
  management.endpoints.health.show-details: true
  management.endpoints.health.time-to-live: 2000
  management.security.enabled: false
  management.health.defaults.enabled: false
  management.health.diskspace.enabled: true
  </code></pre>
  
  <p>My build.gradle has :</p>
  
  <pre><code>dependencies {
      // Spring Boot
      compile group: 'org.springframework.boot', name: 'spring-boot-starter-webflux', version: springBootVersion
      compile group: 'org.springframework.boot', name: 'spring-boot-starter-actuator', version: springBootVersion
  }
  </code></pre>
  
  <p>My gradle.properties:</p>
  
  <pre><code>springBootVersion    = 2.0.0.RC1
  </code></pre>
  
  <p>When I point to <a href="http://127.0.0.1:9400/health" rel="nofollow noreferrer">http://127.0.0.1:9400/health
  </a></p>
  
  <p>I get error screen as attached snapshot.</p>
  
  <p>What am I missing?<a href="https://i.stack.imgur.com/eZRcN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eZRcN.png" alt="enter image description here"></a></p>