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Using Git with Hudson [message #1083350]

Fri, 09 August 2013 21:03

Kevin Simonson

Messages: 4
Registered: August 2013

Junior Member

I'm trying to get Hudson working on a new machine. From the main dashboard I click on <Manage Hudson> and then <Configure System>. Then I scroll down to the section labeled <Git>. There's a textbox labeled <Path to Git executable>; I enter into that textbox "C:/tools/Git/cmd/git.exe", and then click on <Save> down at the bottom of the page.

At this point I click on the icon on the left of the main dashboard for our Firefox UI build and start that build going on the machine of my choice. It runs for a few seconds, and then dies. The console output is:

Started by user anonymous
Building remotely on Lynx Hudson Slave 2
..........<snip>..........
Fetching changes from the remote Git repository
Fetching upstream changes from git@github.com:fs-eng/links
ERROR: Problem fetching from origin / origin - could be unavailable. Continuing anyway
hudson.plugins.git.GitException: Error performing command: C:/tools/Git/cmd/git.exe fetch -t git@github.com:fs-eng/links +refs/heads /*:refs/remotes/origin/*
Cannot run program "C:/tools/Git/cmd/git.exe" (in directory "C:\Users\hudson\workspace\Links-UI-Firefox"): CreateProcess error=2, The system cannot find the file specified
at hudson.plugins.git.GitAPI.launchCommandIn(GitAPI.java:747)
at hudson.plugins.git.GitAPI.launchCommand(GitAPI.java:709)
..........<snip>..........

I brought up a command prompt, and verified that "git.exe" actually exists at "C:\tools\Git\cmd\git.exe". Furthermore, I know I can execute it because I can type in "git --version" and get the version number. Does anyone know what I'm doing wrong?

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Re: Using Git with Hudson [message #1085981 is a reply to message #1083350]

Tue, 13 August 2013 16:22

Geoff Waymark

Messages: 28
Registered: July 2012

Junior Member

I have C:\tools\Git\cmd\git.exe set. No forward slashes. Which works on my system.

If git.exe is in a different location on the slave, then you have to set the tool location for the slave in the configuration for the node.

Hope that helps

Geoff Waymark
Eclipse Hudson team

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Re: Using Git with Hudson [message #1086854 is a reply to message #1085981]

Wed, 14 August 2013 20:49

Kevin Simonson

Messages: 4
Registered: August 2013

Junior Member

Geoff Waymark wrote on Tue, 13 August 2013 12:22

I have C:\tools\Git\cmd\git.exe set. No forward slashes. Which works on my system.

If git.exe is in a different location on the slave, then you have to set the tool location for the slave in the configuration for the node.

Hope that helps

Geoff, thanks tremendously for your advice. I discovered to my dismay that although "git.exe" existed where specified on the master, it didn't exist on either of the two slaves. I copied over my "C:\tools" directory to both slaves, and then started my build again, and got a little bit further. The error messages now say:

Started by user anonymous
Building remotely on Lynx Hudson Slave 2
Checkout:Links-UI-Firefox / C:\Users\hudson\workspace\Links-UI-Firefox - hudson.remoting.Channel@75e6bfea:Lynx Hudson Slave 2
Using strategy: Default
Last Built Revision: Revision c6ab53918ae4cb1c3523096ab5c6ba8702586b62 (origin/master)
Checkout:Links-UI-Firefox / C:\Users\hudson\workspace\Links-UI-Firefox - hudson.remoting.LocalChannel@1a6fa30c
Fetching changes from the remote Git repository
Fetching upstream changes from git@github.com:fs-eng/links
ERROR: Problem fetching from origin / origin - could be unavailable. Continuing anyway
hudson.plugins.git.GitException: Error performing command: C:\tools\Git\cmd\git.exe fetch -t git@github.com:fs-eng/links +refs/heads/*:refs/remotes/origin/*
Command "C:\tools\Git\cmd\git.exe fetch -t git@github.com:fs-eng/links +refs/heads/*:refs/remotes/origin/*" returned status code 128: ssh_exchange_identification: Connection closed by remote host
fatal: Could not read from remote repository.

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

at hudson.plugins.git.GitAPI.launchCommandIn(GitAPI.java:747)
at hudson.plugins.git.GitAPI.launchCommand(GitAPI.java:709)

This has gotten me a little confused. By "ssh_exchange_identification" doesn't it mean there's a problem with my ".ssh" files? But I copied over the exact same files from my ".ssh" directory on the old machine to the respective spots on the three new machines. Do I need to do anything more than copy them over to get Hudson to recognize them?

Kevin S

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Re: Using Git with Hudson [message #1087590 is a reply to message #1086854]

Thu, 15 August 2013 22:00

Kevin Simonson

Messages: 4
Registered: August 2013

Junior Member

[quote title=Kevin Simonson wrote on Wed, 14 August 2013 16:49]Geoff Waymark wrote on Tue, 13 August 2013 12:22

This has gotten me a little confused. By "ssh_exchange_identification" doesn't it mean there's a problem with my ".ssh" files? But I copied over the exact same files from my ".ssh" directory on the old machine to the respective spots on the three new machines. Do I need to do anything more than copy them over to get Hudson to recognize them?

I've gotten past this obstacle too. Now when I click on the build icon for Firefox and then click on the link for this specific build and then on <Console Output>, I get:

Started by user anonymous
Building remotely on Lynx Hudson Slave 2
Checkout:Links-UI-Firefox / C:\Users\hudson\workspace\Links-UI-Firefox - hudson.remoting.Channel@75e6bfea:Lynx Hudson Slave 2
Using strategy: Default
Last Built Revision: Revision c6ab53918ae4cb1c3523096ab5c6ba8702586b62 (origin/master)
Checkout:Links-UI-Firefox / C:\Users\hudson\workspace\Links-UI-Firefox - hudson.remoting.LocalChannel@1a6fa30c
Fetching changes from the remote Git repository
Fetching upstream changes from git@github.com:fs-eng/links

and that's it. I wait several minutes, and the second time several hours, and still this is all that <Console Output> gives me. It's apparently hanging while it's trying to fetch these "upstream changes." I've tried it three times with the same results. Anyone have any idea why it's hanging?

[Updated on: Thu, 15 August 2013 22:00]

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Re: Using Git with Hudson [message #1088020 is a reply to message #1087590]

Fri, 16 August 2013 13:06

Geoff Waymark

Messages: 28
Registered: July 2012

Junior Member

I think it's still, struggling to find the ssh keys. It's possible the user home isn't set correctly on the slave.

Henrik's blog might help.

The error reporting for git + ssh can leave something to be desired.

Geoff Waymark
Eclipse Hudson team

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