按照第三章的讲解进行安装配置后，最后尝试连接进行验证时，可以走通。但是到第五章实际实现自动化部署任务时，按照课程的讲解配置完后，构建时报错：

Started by user adminRunning as SYSTEM
[EnvInject] - Loading node environment variables.
Building remotely on TestEnv in workspace /root/.jenkins/workspace/DeployOder
 > /usr/bin/git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > /usr/bin/git config remote.origin.url git@github.com:mengcan624/order.git # timeout=10
Fetching upstream changes from git@github.com:mengcan624/order.git
 > /usr/bin/git --version # timeout=10
 > /usr/bin/git fetch --tags --progress git@github.com:mengcan624/order.git +refs/heads/*:refs/remotes/origin/* # timeout=10
ERROR: Error fetching remote repo 'origin'
hudson.plugins.git.GitException: Failed to fetch from git@github.com:mengcan624/order.git
	at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:888)
	at hudson.plugins.git.GitSCM.retrieveChanges(GitSCM.java:1155)
	at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1186)
	at hudson.scm.SCM.checkout(SCM.java:505)
	at hudson.model.AbstractProject.checkout(AbstractProject.java:1205)
	at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:574)
	at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:499)
	at hudson.model.Run.execute(Run.java:1853)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:427)
Caused by: hudson.plugins.git.GitException: Command "/usr/bin/git fetch --tags --progress git@github.com:mengcan624/order.git +refs/heads/*:refs/remotes/origin/*" returned status code 128:
stdout: 
stderr: Host key verification failed.
fatal: The remote end hung up unexpectedly

	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2430)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:2044)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$500(CliGitAPIImpl.java:81)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$1.execute(CliGitAPIImpl.java:569)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$GitCommandMasterToSlaveCallable.call(RemoteGitImpl.java:161)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$GitCommandMasterToSlaveCallable.call(RemoteGitImpl.java:154)
	at hudson.remoting.UserRequest.perform(UserRequest.java:211)
	at hudson.remoting.UserRequest.perform(UserRequest.java:54)
	at hudson.remoting.Request$2.run(Request.java:369)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
	Suppressed: hudson.remoting.Channel$CallSiteStackTrace: Remote call to TestEnv
		at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
		at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:356)
		at hudson.remoting.Channel.call(Channel.java:955)
		at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.execute(RemoteGitImpl.java:146)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.invoke(RemoteGitImpl.java:132)
		at com.sun.proxy.$Proxy159.execute(Unknown Source)
		at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:886)
		at hudson.plugins.git.GitSCM.retrieveChanges(GitSCM.java:1155)
		at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1186)
		at hudson.scm.SCM.checkout(SCM.java:505)
		at hudson.model.AbstractProject.checkout(AbstractProject.java:1205)
		at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:574)
		at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
		at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:499)
		at hudson.model.Run.execute(Run.java:1853)
		at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
		at hudson.model.ResourceController.execute(ResourceController.java:97)
		at hudson.model.Executor.run(Executor.java:427)
ERROR: Error fetching remote repo 'origin'
Finished: FAILURE

本人jenkins是安装部署到windows环境的，访问虚拟机中的Linux环境，虚拟机中的git以及本地中的Git的公钥也都配置在了github上，还是报错，求解~~~急~~~~~~