spring cloud config ssh connection failing

java ssh spring-cloud-config
rich green picture rich green · Jun 29, 2016 · Viewed 9k times · Source

Using Spring Boot, Java 1.8, cloud-config-server

I'm trying to access a git repo using this application.yml snippet. But is failing to find the hostkey.

spring:
cloud:
    config:
      allowOverride: true
      failFast: true
      overrideNone: true
      overrideSystemProperties: false
      server:
        git:
          uri: ssh://[email protected]:7999/project/name.git

And the address is in my knowHosts file:

10.4.31.179:7999,10.4.31.179 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA1UF27s4svxRyc3eQVq67hOhl9szwXy15oaUmo5Ndtk9DP5QEvstSA1MR0JotcKrhEHb4FA8a06oRvkyj55zfvr9t96O/sva+66TegPGjiWZNU75LSEKhA8EZ+/VEKVA2Pk1iUEYbtFZZ+SuTKtikXQt0EjghHpx66mWEJU11911+quCfjOIL74tz96IoXBfTZJmhiUQN+SC4UG3bCnha3mMlCnb1/0BkX+YuAy3GN+UTSxCqeEHuwhN8+DsPhVgTKx/YVbhZUPlGlYEUZjjXk6RnyhQr32Jwzv4WpeVu943e2UzlUFMMorl+usur7bSAZWsQWyz6MfjYUyKZkdZYjQ==

stacktrace: 

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.<init>(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)

Any idea why this is not working?

Answer

Sanghyun Lee picture Sanghyun Lee · Apr 5, 2017

This is a related GitHub issue and a comment.

TL;DR before you try to connect to a repository server, you need to update ~/.ssh/known_hosts with a non-hash format.

One liner,

ssh-keyscan -t rsa {hostname or IP} >> ~/.ssh/known_hosts

Related questions

SSH library for Java

Does anyone know of a good library for SSH login from Java.

Read More
com.jcraft.jsch.JSchException: UnknownHostKey

I'm trying to use Jsch to establish an SSH connection in Java. My code produces the following exception: com.jcraft.jsch.JSchException: UnknownHostKey: mywebsite.com. RSA key fingerprint is 22:fb:ee:fe:18:cd:aa:9a:9c:78:89:9f:b4:78:75:b4 I …

Read More
Run a command over SSH with JSch

I'm trying to run a command over SSH with JSch, but JSch has virtually no documentation and the examples I've found are terrible. For example, this one doesn't show code for handling the output stream. And, this one uses an …

Read More