The message says:

Cannot run program "git": CreateProcess error=2, The system cannot find the file specified

That usually means the git program cannot be found by the Jenkins process. Since you say that Jenkins is configured to use git on Unix, I assume you do not have git installed on the windows master.

Since it works when started without polling, I assume the job is using the default of fast remote polling. That means the job attempts to execute the git program on the master to poll for changes, rather than requiring a workspace on the slave. The system cannot find the file specified probably indicates that the git program is not available on the master, but is available on the slave.

If that is the case, the work around is to add the "Advanced clone behaviour" and "Require workspace for polling". That will prevent the master server from performing the poll.

Another work around would be to install git on the windows master server and tell Jenkins where to find the Windows git installation.

Hi Mark, the master has git installed. But it is git.exe, not git as on osx.

> the work around is to add the "Advanced clone behaviour" and "Require workspace for polling".
I did try that, but I get a different error. See below.

Is there a way to tell the Jenkins master to use the windows git instead of unix git for polling ? Because the job is configured with the unix git, since it is not possible to use git.exe in unix.

Polling SCM changes on MobileDaily
Using strategy: Default
[poll] Last Built Revision: Revision 4dd28ae36ea5534d2ad666e70edbcb22b412b3ff (refs/remotes/origin/develop)
> git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repositories
> git config remote.origin.url git@bitbucket.org:alexmx/en-ios-internship.git # timeout=10
Cleaning workspace
> git rev-parse --verify HEAD # timeout=10
Resetting working tree
> git reset --hard # timeout=10
> git clean -fdx # timeout=10
Fetching upstream changes from git@bitbucket.org:alexmx/en-ios-internship.git
> git --version # timeout=10
using GIT_SSH to set credentials MobileDaily GitHub key
> git fetch --tags --progress git@bitbucket.org:alexmx/en-ios-internship.git +refs/heads/:refs/remotes/origin/
FATAL: hudson.plugins.git.GitException: Failed to fetch from git@bitbucket.org:alexmx/en-ios-internship.git
hudson.util.IOException2: hudson.plugins.git.GitException: Failed to fetch from git@bitbucket.org:alexmx/en-ios-internship.git
at hudson.plugins.git.GitSCM.compareRemoteRevisionWith(GitSCM.java:475)
at hudson.scm.SCM.poll(SCM.java:401)
at hudson.model.AbstractProject.pollWithWorkspace(AbstractProject.java:1450)
at hudson.model.AbstractProject._poll(AbstractProject.java:1421)
at hudson.model.AbstractProject.poll(AbstractProject.java:1332)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:515)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:544)
at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: hudson.plugins.git.GitException: Failed to fetch from git@bitbucket.org:alexmx/en-ios-internship.git
at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:647)
at hudson.plugins.git.GitSCM.compareRemoteRevisionWithImpl(GitSCM.java:554)
at hudson.plugins.git.GitSCM.compareRemoteRevisionWith(GitSCM.java:473)
... 13 more
Caused by: hudson.plugins.git.GitException: Command "git fetch --tags --progress git@bitbucket.org:alexmx/en-ios-internship.git +refs/heads/:refs/remotes/origin/" returned status code 128:
stdout:
stderr: /var/folders/xk/rth1rtgd6v96z_fvhq71vvvh0000gq/T/ssh4470835490524156079.sh: line 2: ssh: command not found
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1435)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:1223)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$300(CliGitAPIImpl.java:85)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$1.execute(CliGitAPIImpl.java:280)
at org.jenkinsci.plugins.gitclient.RemoteGitImpl$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:121)
at hudson.remoting.UserRequest.perform(UserRequest.java:49)
at hudson.remoting.Request$2.run(Request.java:324)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
at ......remote call to MobileDaily(Native Method)
at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1356)
at hudson.remoting.UserResponse.retrieve(UserRequest.java:221)
at hudson.remoting.Channel.call(Channel.java:752)
at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.execute(RemoteGitImpl.java:146)
at sun.reflect.GeneratedMethodAccessor232.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.invoke(RemoteGitImpl.java:132)
at com.sun.proxy.$Proxy56.execute(Unknown Source)
at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:645)
... 15 more
Done. Took 0.48 sec
No changes

xfreebird the message

ssh: command not found
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

indicates that the git program did not have its PATH correctly configured to find the ssh executable which it uses for authenticated access to the remote server. If that job was configured with "Force polling using workspace", then that means the machine on which the workspace exists does not have the ssh command in its PATH.

You can check that by creating a job which runs on that same machine and reports the value of the PATH environment variable.

You can also review the environment variables of the slave through the "nodes" panel in Jenkins (http://localhost:8080/computer/). Each node has a "System Information" link which shows a page of the various settings used as defaults on that node. Those are defaults, and can be overridden by jobs, but it may be worth checking that the defaults are what you expect for that computer and operating system.

Putting git.exe in PATH solved the issue when using windows Master - mac Slave.

But when using "Require workspace for polling" option, I still get the "ssh: command not found". Which is weird, because the mac has ssh in PATH. Is it trying to use ssh from the windows Master ?

It is unlikely to be attempting to use the ssh from the Windows master. That would require changes to the git compiled executable on your mac. The "ssh: command not found" is a message from command line git. Command line git is invoked by the Jenkins git plugin, then command line git decides (within the compiled git program) that it needs to invoke the ssh command.

My guess is that the PATH environment variable on the machine hosting the workspace (the mac) is wrong. It does not have ssh in the path.