install git on centos

http://www.davegardner.me.uk/blog/2010/01/29/setting-up-git-on-centos-5-server/
http://www.jedi.be/blog/2009/05/06/8-ways-to-share-your-git-repository/#apachehttp

#yum install git

(using rpmforge repository)

Creating and sharing a repository

Creating a repository is easy! Simply create a folder and type git init.

mkdir newrepo
cd newrepo
git init

Once created, we can copy/create our files (think svn import) and then do:

git add .
git commit

Share over apache http

Preparing the repository

# On the web server we assume var/git as the central repository place and will create a new project-X dir
$ cd /var/git
$ mkdir project-X
$ cd project-X


# now we initialize this directory
# but instead of using git init, we use  git --bare init
# "A short aside about what git means by bare: A default git repository assumes that you will be using it as your working directory
# , so git stores the actual bare repository files in a .git directory alongside all the project files. Remote repositories don't need copies of the
 files on the filesystem unlike working copies, all they need are the deltas and binary what-nots of the repository itself. This is what "bare" means to git. Just the repository itself."
$ git --bare init

Now that we created the project directory we need to give apache access to it:

• Be sure to set the correct permissions on the /var/git directory so that it can be read by the webuser. chown -R apache:apache /var/git/project-X
• If you have selinux enabled: chcon -R -t httpd_sys_content_t /var/git/project-X
• Enable the post-update hook: chmod +x /var/git/project-X/hooks/post-update

When you did not set the post commithook:

$ git clone http://git.yourdomain.com/project-X
Initialized empty Git repository in /Users/mydir/project-X/.git/
fatal: http://git.yourdomain.com/project-X.git/info/refs not found: did you run git update-server-info on the server?

Then you can need to run it manually the first time

$ cd /var/git/project-X
$ sudo -u apache git update-server-info

Preparing apache
This document assumes you have a basic apache setup. And you have virtual name server working. Most of it is standard acces to the directory.
To allow write access, we need to have Webdav enabled. 
http://www.kernel.org/pub/software/scm/git/docs/howto/setup-git-server-over-http.txt 

 Servername git.mydomain.com
 DocumentRoot /var/git
 
    DAV On
    Options +Indexes +FollowSymLinks 
  AllowOverride None
  Allow from all
  Order allow,deny
 

This will add a virtual server that has access to the /var/git directory using simple browsing.
In case you are experiencing trouble:

• Remove the restrictions from welcome.conf: in this default file, it disables the index option. Error: ...
• Note the + before the options, to allow the merge of permissions

Controlling access
We control access to your repository using apache groupfiles and password files

 ServerName git.yourdomain.com
 DocumentRoot /var/git
 
  DAV On
  Options ExecCGI FollowSymLinks Indexes
  # Deny everyything here
  Deny from all
  AuthType Basic
  AuthName "git repository"
  AuthUserFile /var/git/htpasswd.git
  AuthGroupFile /var/git/htgroup.git
 


 
  Allow from all
  Order allow,deny
  
   Require group project-X-read
  
  
   Require group project-X-write
  
  

Accessing the repository
Git uses curl to access http repositories. Because our repository is now protected we need to create an entry in our $HOME/.netrc file

• http://maymay.net/blog/2008/08/08/how-to-use-http-basic-authentication-with-git/

$ cat $HOME/.netrc
machine git.yourdomain.com
login reader
password reader

Now you should be able to clone project-X

$ git clone http://git.mydomain.com/project-X

Possible Errors

Trying update
error: Cannot access URL http://git.yourdomain.com/project-X/, return code 22
error: failed to push some refs to 'http://git.yourdomain.com/project-X'

If there's something wrong with the permissions. Maybe you don't have webdav enabled, the user is in the wrong group, or filepermissions are not set correctly. Check your apache error_log 

$ git clone http://git.yourdomain.com/project-X
$ git push
fatal: git-push is not available for http/https repository when not compiled with USE_CURL_MULTIerror: failed to push some refs to 'http://git.yourdomain.com/project-X'

Either you compile your git client with the correct curl options. Or you can alternatively mount the remote repository as webdav share and access it via file:// references. See http://wiki.dreamhost.com/Talk:Git

The following happens if your curl library  was not compiled with the correct options to post to 
http://kerneltrap.org/mailarchive/git/2008/1/13/564431
After a bit of research it seems that CURL compilation into GIT was not entirely successful for the Git on Mac OS X. As I was already mounting the git repository via WebDAV you an push and pull to your locally mounted repository by replacing the http URL with the path to your mounted WebDAV (/Volumes//). This worked pretty well for me and works well with Dreamhost with very little configuration.

$ git push
Fetching remote heads...
   refs/
   refs/tags/
   refs/heads/
   No refs in common and none specified; doing nothing.

This happens when you cloned an empty repository:

• http://markmail.org/message/siua5lmfcyqivk4k#query:No%20refs%20in%20common%20and%20none%20specified%3B%20doing%20nothing.+page:1+mid:qmjg3elsuxnxjxrc+state:results

Because you cloned an empty repository , you need to specify the origin and master , after this first push, you can use git push as usual

$ git push origin master