Jenkins slave git not found

[Marcello A]

Hi,

we configured a new slave node connected to a Jenkins 2.8 master node but when we schedule a build we noticed an issue related to git client installed to the slave node. The exception reported is :

ERROR: Error cloning remote repo 'origin'
hudson.plugins.git.GitException: Could not init /CVSROOT/software/jenkins/workspace/prestito_master-OHLXFIDSWAXA2XCHYQWYXANJSM6JFRUUJ3EYZK62USENWNHC752Q
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$5.execute(CliGitAPIImpl.java:772)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$2.execute(CliGitAPIImpl.java:564)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$1.call(RemoteGitImpl.java:153)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$1.call(RemoteGitImpl.java:146)
	at hudson.remoting.UserRequest.perform(UserRequest.java:207)
	at hudson.remoting.UserRequest.perform(UserRequest.java:53)
	at hudson.remoting.Request$2.run(Request.java:358)
	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$CallSiteStackTrace: Remote call to cvs-agent-pr01.fineco.it
		at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1693)
		at hudson.remoting.UserResponse.retrieve(UserRequest.java:310)
		at hudson.remoting.Channel.call(Channel.java:908)
		at org.jenkinsci.plugins.gitclient.RemoteGitImpl$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$CommandInvocationHandler.invoke(RemoteGitImpl.java:132)
		at com.sun.proxy.$Proxy138.execute(Unknown Source)
		at hudson.plugins.git.GitSCM.retrieveChanges(GitSCM.java:1120)
		at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1160)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:113)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:85)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:75)
		at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1$1.call(AbstractSynchronousNonBlockingStepExecution.java:47)
		at hudson.security.ACL.impersonate(ACL.java:260)
		at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1.run(AbstractSynchronousNonBlockingStepExecution.java:44)
		at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
		... 4 more
Caused by: hudson.plugins.git.GitException: Error performing command:  init /CVSROOT/software/jenkins/workspace/prestito_master-OHLXFIDSWAXA2XCHYQWYXANJSM6JFRUUJ3EYZK62USENWNHC752Q
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2003)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1964)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1960)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommand(CliGitAPIImpl.java:1597)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$5.execute(CliGitAPIImpl.java:770)
	... 11 more
Caused by: java.io.IOException: Cannot run program "" (in directory "/CVSROOT/software/jenkins/workspace/prestito_master-OHLXFIDSWAXA2XCHYQWYXANJSM6JFRUUJ3EYZK62USENWNHC752Q"): error=2, No such file or directory
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
	at hudson.Proc$LocalProc.<init>(Proc.java:249)
	at hudson.Proc$LocalProc.<init>(Proc.java:218)
	at hudson.Launcher$LocalLauncher.launch(Launcher.java:930)
	at hudson.Launcher$ProcStarter.start(Launcher.java:450)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1992)
	... 15 more
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:247)
	at java.lang.ProcessImpl.start(ProcessImpl.java:134)
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
	... 20 more

The command is empty but the git command is visible from client side. Could someone help us to debug this issue?

Thanks,

Marcello

[Victor Martinez]

It looks like the git installation within Jenkins got an empty value:

Caused by: java.io.IOException: Cannot run program ""

You might need to review those configuration details under 'Manage Jenkins' > 'Global Tool Configuration' > ' Git' > 'Git Installations'

Cheers