How to configure Git post commit hook

Question

How to trigger a build remotely from Jenkins  How to configure Git post commit hook   My requirement is whenever changes are made in the Git repository for a particular project it will automatically start Jenkins build for that project     In Jenkins trigger build section I selected trigger build remotely  In  git directory  hooks directory is there in that we have to configure post commit file  I am confusing how to trigger a build from there  I know some part we should use curl command      curl cmbuild aln com jenkins view project name job myproject buildwithparameters Branch feat-con   I have placed this command in my git server hooks directory  post commit hook   Whenever the changes happen in repository it is running automate build     I want to check in changeset whether in at least one java file is there the build should start  Suppose the developers changed only xml files or property files the build should not start  Along with xml  suppose the  java files is there the build should start

User · Answer

I want to add to the answers above that it becomes a little more difficult if Jenkins authorization is enabled.

After enabling it I got an error message that anonymous user needs read permission.

I saw two possible solutions:

1: Changing my hook to:

curl --user name:passwd -s http://domain?token=whatevertokenuhave

2: setting project based authorization.

The former solutions has the disadvantage that I had to expose my passwd in the hook file. Unacceptable in my case.

The second works for me. In the global auth settings I had to enable Overall>Read for Anonymous user. In the project I wanted to trigger I had to enable Job>Build and Job>Read for Anonymous.

This is still not a perfect solution because now you can see the project in Jenkins without login. There might be an even better solution using the former approach with http login but I haven't figured it out.

User · Answer

As mentioned in  Polling must die  triggering Jenkins builds from a git hook   you can notify Jenkins of a new commit      With the latest Git plugin 1 1 14  that I just release now   you can now do this more  easily by simply executing the following command   curl http   yourserver jenkins git notifyCommit url  lt URL of the Git repository gt        This will scan all the jobs that   s configured to check out the specified URL  and if they are also configured with polling  it   ll immediately trigger the polling  and if that finds a change worth a build  a build will be triggered in turn         This allows a script to remain the same when jobs come and go in Jenkins    Or if you have multiple repositories under a single repository host application  such as Gitosis   you can share a single post-receive hook script with all the repositories    Finally  this URL doesn   t require authentication even for secured Jenkins  because the server doesn   t directly use anything that the client is sending  It runs polling to verify that there is a change  before it actually starts a build    As mentioned here  make sure to use the right address for your Jenkins server      since we re running Jenkins as standalone Webserver on port 8080 the URL should have been without the  jenkins  like this    http   jenkins 8080 git notifyCommit url git gitserver tools common git    To reinforce that last point  ptha adds in the comments      It may be obvious  but I had issues with    curl http   yourserver jenkins git notifyCommit url  lt URL of the Git repository gt          The url parameter should match exactly what you have in Repository URL of your Jenkins job    When copying examples I left out the protocol  in our case ssh     and it didn t work      You can also use a simple post-receive hook like in  Push based builds using Jenkins and GIT      bin bash  usr bin curl --user USERNAME PASS -s    http   jenkinsci job PROJECTNAME build token 1qaz2wsx      Configure your Jenkins job to be able to    Trigger builds remotely    and use an authentication token  1qaz2wsx in this example     However  this is a project-specific script  and the author mentions a way to generalize it  The first solution is easier as it doesn t depend on authentication or a specific project        I want to check in change set whether at least one java file is there the build should start    Suppose the developers changed only XML files or property files  then the build should not start     Basically  your build script can    put a  build  notes  see git notes  on the first call on the subsequent calls  grab the list of commits between HEAD of your branch candidate for build and the commit referenced by the git notes  build   git show refs notes build   git diff --name-only SHA build HEAD  your script can parse that list and decide if it needs to go on with the build    in any case  create move your git notes  build  to HEAD      May 2016  cwhsu points out in the comments the following possible url      you could just use curl --user USER PWD http   JENKINS SERVER job JOB NAME build token YOUR TOKEN if you set trigger config in your item       June 2016  polaretto points out in the comments      I wanted to add that with just a little of shell scripting you can avoid manual url configuration  especially if you have many repositories under a common directory    For example I used these parameter expansions to get the repo name   repository   PWD  hooks    repository   repository             and then use it like   curl  JENKINS URL git notifyCommit url  GIT URL  repository

User · Answer

Hope this helps  http   nrecursions blogspot in 2014 02 how-to-trigger-jenkins-build-on-git html    It s just a matter of using curl to trigger a Jenkins job using the git hooks provided by git  The command  curl http   localhost 8080 job someJob build delay 0sec   can run a Jenkins job  where someJob is the name of the Jenkins job      Search for the hooks folder in your hidden  git folder  Rename the post-commit sample file to post-commit  Open it with Notepad  remove the   Nothing line and paste the above command into it     That s it  Whenever you do a commit  Git will trigger the post-commit commands defined in the file

User · Answer

As the previous answer did show an example of how the full hook might look like here is the code of my working post-receive hook      usr bin python  import sys from subprocess import call  if   name         main         for line in sys stdin xreadlines            old  new  ref   line strip   split              if ref     refs heads master               print                                                              print  Pushing to master  Triggering jenkins                       print                                                              sys stdout flush               call   curl    -sS    http   jenkinsserver git notifyCommit url ssh   user gitserver var git repo git      In this case I trigger jenkins jobs only when pushing to master and not other branches

[git] How to configure Git post commit hook

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