Post-receive hook not using correct Ruby

Question

Please bear with me, as I am an extreme newbie and don't quite know what I'm talking about.

I'm trying to set up a Git post-receive hook to deploy my Jekyll site, as described here. Its contents are

#!/usr/bin/env sh

GIT_REPO=$HOME/git/jekyll.git
TMP_GIT_CLONE=$HOME/tmp/jekyll
PUBLIC_WWW=$HOME/public_html

echo $PATH

git clone $GIT_REPO $TMP_GIT_CLONE
cd $TMP_GIT_CLONE
echo "Run jekyll"
jekyll --no-auto $TMP_GIT_CLONE $PUBLIC_WWW
cd $HOME
echo "Remove temporary dir..."
rm -Rf $TMP_GIT_CLONE
echo "Temporary dir removed."
exit

I'm echoing PATH for troubleshooting purposes. If I login via ssh and execute the script manually with ~/git/jekyll.git/hooks/post-receive, everything works fine, and the console reads

remote$ ~/git/jekyll.git/hooks/post-receive
/usr/local/jdk/bin:/home7/contenw6/.rvm/gems/ruby-1.9.3-p194/bin:/home7/contenw6/.rvm/gems/ruby-1.9.3-p194@global/bin:/home7/contenw6/.rvm/rubies/ruby-1.9.3-p194/bin:/home7/contenw6/.rvm/bin:/usr/local/jdk/bin:/home7/contenw6/perl5/bin:/usr/lib64/qt-3.3/bin:/home7/contenw6/perl5/bin:/ramdisk/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11R6/bin:/home7/contenw6/ruby/gems/bin:/home7/contenw6/bin:/usr/local/bin:/usr/X11R6/bin:/home7/contenw6/ruby/gems/bin:/home7/contenw6/.rvm/bin
Cloning into '/home7/contenw6/tmp/jekyll'...
done.
Run jekyll
Configuration from /home7/contenw6/tmp/jekyll/_config.yml
Building site: /home7/contenw6/tmp/jekyll -> /home7/contenw6/public_html
Successfully generated site: /home7/contenw6/tmp/jekyll -> /home7/contenw6/public_html
Remove temporary dir...
Temporary dir removed.

However, when I git push deploy master from my laptop, I receive this error:

laptop$ git push deploy master
Counting objects: 5, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (3/3), done.
Writing objects: 100% (3/3), 305 bytes, done.
Total 3 (delta 2), reused 0 (delta 0)
remote: /usr/libexec/git-core:/usr/local/jdk/bin:/ramdisk/bin:/usr/bin:/bin:/usr/local/bin:/usr/X11R6/bin:/home7/contenw6/ruby/gems/bin:/home7/contenw6/.rvm/bin:/home7/contenw6/.rvm/bin
remote: Cloning into '/home7/contenw6/tmp/jekyll'...
remote: done.
remote: Run jekyll
remote: /home7/contenw6/ruby/gems/gems/yajl-ruby-1.1.0/lib/yajl/yajl.so: [BUG] Segmentation fault
remote: ruby 1.8.7 (2012-02-08 MBARI 8/0x6770 on patchlevel 358) [x86_64-linux], MBARI 0x6770, Ruby Enterprise Edition 2012.02
remote: 
remote: hooks/post-receive: line 14: 30293 Aborted                 jekyll --no-auto $TMP_GIT_CLONE $PUBLIC_WWW
remote: Remove temporary dir...
remote: Temporary dir removed.
To contenw6@contentioninvain.com:~/git/jekyll.git
   154f467..80c8fcb  master -> master

It seems to me that when the post-receive hook is executed as a result of git push, the wrong ruby (1.8.7, presumably the system's?) is being used. Note that the PATH variables are different in each instance.

If that's the problem, that's as much as I can figure out. How do I fix this?

Answer 1

so:

1) your shebang is /usr/bin/env sh - this is not RVM compatible shell, either use zsh or bash

2) you need to use RVM somehow, when you login via ssh you already used RVM via ~/.bash_profile but in the script you do not load RVM, try this shebang:

/home7/contenw6/.rvm/bin/rvm-shell 1.9.3-p194

Answer 2

The user that runs your git master doesn't have ruby setup properly with rvm.

First, you have to find out which user runs Git on the remote (it could be a user called "git"). Once you find the user, copy your ~/.rvm/ directory to that user's home directory. For example, if your username was bob, and the user running git was called gitter, then you would have to do the following:

sudo rm -rf /home/gitter/.rvm
sudo cp -R /home/bob/.rvm/ /home/gitter

If you don't have a .rvm directory in your home, then the following can help:

sudo rm -rf /home/gitter/.rvm

Hope this helps.