jenkins的slave没有执行build，slave执行build失败

1、slave的build配置如下

2、但是从控制台输出日志来看，pre steps和post steps都执行了，但是build没有执行

3、最后的错误信息如下：

ERROR: Failed to parse POMs
java.io.IOException: Cannot run program "java" (in directory "/var/lib/jenkins/workspace/28bafb523cf4f068e51266ade9b154b9"): error=2, No such file or directory
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
	at hudson.Proc$LocalProc.<init>(Proc.java:245)
	at hudson.Proc$LocalProc.<init>(Proc.java:214)
	at hudson.Launcher$LocalLauncher.launch(Launcher.java:850)
	at hudson.Launcher$ProcStarter.start(Launcher.java:384)
	at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1195)
	at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1160)
	at hudson.remoting.UserRequest.perform(UserRequest.java:153)
	at hudson.remoting.UserRequest.perform(UserRequest.java:50)
	at hudson.remoting.Request$2.run(Request.java:336)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
	at ......remote call to 10-57-19-56(Native Method)
	at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1545)
	at hudson.remoting.UserResponse.retrieve(UserRequest.java:253)
	at hudson.remoting.Channel.call(Channel.java:830)
	at hudson.Launcher$RemoteLauncher.launch(Launcher.java:959)
	at hudson.Launcher$ProcStarter.start(Launcher.java:384)
	at hudson.maven.AbstractMavenProcessFactory.newProcess(AbstractMavenProcessFactory.java:278)
	at hudson.maven.ProcessCache.get(ProcessCache.java:236)
	at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.doRun(MavenModuleSetBuild.java:798)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:490)
	at hudson.model.Run.execute(Run.java:1735)
	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:544)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:415)
Caused by: java.io.IOException: error=2, No such file or directory
	at java.lang.UNIXProcess.forkAndExec(Native Method)
	at java.lang.UNIXProcess.<init>(UNIXProcess.java:248)
	at java.lang.ProcessImpl.start(ProcessImpl.java:134)
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
	at hudson.Proc$LocalProc.<init>(Proc.java:245)
	at hudson.Proc$LocalProc.<init>(Proc.java:214)
	at hudson.Launcher$LocalLauncher.launch(Launcher.java:850)
	at hudson.Launcher$ProcStarter.start(Launcher.java:384)
	at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1195)
	at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1160)
	at hudson.remoting.UserRequest.perform(UserRequest.java:153)
	at hudson.remoting.UserRequest.perform(UserRequest.java:50)
	at hudson.remoting.Request$2.run(Request.java:336)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
[WS-CLEANUP] Deleting project workspace...[WS-CLEANUP] done
Finished: FAILURE

4、slave节点的系统信息里的环境变量如下

5、解决办法：

在/usr/bin下添加java的软链接，使其指向真正的java执行文件位置

master机器也是这样配置的，有个java的软链接指向java

参考：https://issues.jenkins-ci.org/browse/JENKINS-24788