title: spring cloud config ssh connection failing
body: <p>Using Spring Boot, Java 1.8, cloud-config-server</p>
  
  <p>I'm trying to access a git repo using this application.yml snippet.  But is failing to find the hostkey.</p>
  
  <pre><code>spring:
  cloud:
      config:
        allowOverride: true
        failFast: true
        overrideNone: true
        overrideSystemProperties: false
        server:
          git:
            uri: ssh://git@10.4.31.179:7999/project/name.git
  </code></pre>
  
  <p>And the address is in my knowHosts file:</p>
  
  <pre><code>10.4.31.179:7999,10.4.31.179 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA1UF27s4svxRyc3eQVq67hOhl9szwXy15oaUmo5Ndtk9DP5QEvstSA1MR0JotcKrhEHb4FA8a06oRvkyj55zfvr9t96O/sva+66TegPGjiWZNU75LSEKhA8EZ+/VEKVA2Pk1iUEYbtFZZ+SuTKtikXQt0EjghHpx66mWEJU11911+quCfjOIL74tz96IoXBfTZJmhiUQN+SC4UG3bCnha3mMlCnb1/0BkX+YuAy3GN+UTSxCqeEHuwhN8+DsPhVgTKx/YVbhZUPlGlYEUZjjXk6RnyhQr32Jwzv4WpeVu943e2UzlUFMMorl+usur7bSAZWsQWyz6MfjYUyKZkdZYjQ==
  </code></pre>
  
  <p>stacktrace: </p>
  
  <pre><code>com.jcraft.jsch.JSchException: UnknownHostKey: 10.4.31.179. RSA key fingerprint is 9e:6a:f1:59:98:59:e4:f8:ac:39:e7:02:07:d8:4f:58
      at com.jcraft.jsch.Session.checkHost(Session.java:786)
      at com.jcraft.jsch.Session.connect(Session.java:342)
      at org.eclipse.jgit.transport.JschConfigSessionFactory.getSession(JschConfigSessionFactory.java:116)
      at org.eclipse.jgit.transport.SshTransport.getSession(SshTransport.java:136)
      at org.eclipse.jgit.transport.TransportGitSsh$SshFetchConnection.&lt;init&gt;(TransportGitSsh.java:262)
      at org.eclipse.jgit.transport.TransportGitSsh.openFetch(TransportGitSsh.java:161)
      at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:136)
      at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:122)
      at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1115)
      at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:130)
      at org.eclipse.jgit.api.CloneCommand.fetch(CloneCommand.java:178)
      at org.eclipse.jgit.api.CloneCommand.call(CloneCommand.java:125)
      at org.springframework.cloud.config.server.JGitEnvironmentRepository.cloneToBasedir(JGitEnvironmentRepository.java:269)
      at org.springframework.cloud.config.server.JGitEnvironmentRepository.copyRepository(JGitEnvironmentRepository.java:241)
      at org.springframework.cloud.config.server.JGitEnvironmentRepository.createGitClient(JGitEnvironmentRepository.java:226)
      at org.springframework.cloud.config.server.JGitEnvironmentRepository.findOne(JGitEnvironmentRepository.java:114)
      at org.springframework.cloud.config.server.MultipleJGitEnvironmentRepository.findOne(MultipleJGitEnvironmentRepository.java:87)
      at org.springframework.cloud.config.server.EnvironmentController.labelled(EnvironmentController.java:109)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222)
      at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
      at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:775)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
      at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)
      at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:856)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:841)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:300)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:103)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:77)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:521)
      at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1096)
      at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:674)
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      at java.lang.Thread.run(Thread.java:745)
  </code></pre>
  
  <p>Any idea why this is not working?</p>