This is a translation of my German entry.

Until now I managed my code/work with Subversion and all was very well, but I decided to move to a distributed revision control system. Calling spade as a spade my choice was Git.

After some tests I had the problem, that there is (basically) no central repository where everyone can commit changes, but I’m working with other guys on homework/projects. So how to centralize a distributed revision control system? Nothing easier than that!

Server set up

Software of choice is called gitosis, so install the following:

aptitude install git git-core gitosis

Gitosis will manage repositories and privileges on the repository server. The installation progress will add a new user to your system called gitosis (see /etc/passwd ). To initialize the master repository that will manage the rest just copy the SSH public key of your local account to /tmp/ and do the following:

binfalse /home # su - gitosis
gitosis@binfalse:~$ gitosis-init < /tmp/
Initialized empty Git repository in /home/git/repositories/gitosis-admin.git/
Reinitialized existing Git repository in /home/git/repositories/gitosis-admin.git/
gitosis@binfalse:~$ exit

That’s it on the server, now you have a head-repository and you can manage everything on your local machine.

Managing the manage-repository

Right back on your local machine you also have to install Git:

aptitude install git git-core

Now you’re able to check out the previous created managing repository that knows your SSH key:

esmz-designz@abakus ~ $ mkdir git
esmz-designz@abakus ~ $ cd git/
esmz-designz@abakus ~/git $ git clone gitosis@HOST:gitosis-admin.git
Initialized empty Git repository in /home/esmz-designz/git/gitosis-admin/.git/
remote: Counting objects: 5, done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 5 (delta 1), reused 5 (delta 1)
Receiving objects: 100% (5/5), done.
Resolving deltas: 100% (1/1), done.
esmz-designz@abakus ~/git $ l
total 12K
drwxr-xr-x 3 esmz-designz 4.0K 2009-08-23 01:19 ./
drwxr-xr-x 21 esmz-designz 4.0K 2009-08-23 01:14 ../
drwxr-xr-x 4 esmz-designz 4.0K 2009-08-23 01:19 gitosis-admin/
esmz-designz@abakus ~/git $ cd gitosis-admin/
esmz-designz@abakus ~/git/gitosis-admin $ l
total 20K
drwxr-xr-x 4 esmz-designz 4.0K 2009-08-23 01:19 ./
drwxr-xr-x 3 esmz-designz 4.0K 2009-08-23 01:19 ../
drwxr-xr-x 8 esmz-designz 4.0K 2009-08-23 01:19 .git/
-rw-r--r-- 1 esmz-designz 89 2009-08-23 01:19 gitosis.conf
drwxr-xr-x 2 esmz-designz 4.0K 2009-08-23 01:19 keydir/

The directory keydir holds known SSH keys from users that will work with you, gitosis.conf is the managing file. It is nearly empty on creation and may look like this:


[group gitosis-admin]
writable = gitosis-admin
members = esmz-designz@abakus

To add a new repository just type something like this:

[repo RepositoryName]
owner = you@yourhost
description = some description words

And to create a new group of users:

[group GroupName]
writable = RepoTheyCanWrite1 RepoTheyCanWrite2
readonly = RepoTheyCanRead1 RepoTheyCanRead2
members = user1@host1 user2@host2

New users should give you their public key, so you can save it in the keydir directory with a name like . To commit the changes you’ve made type the following:

esmz-designz@abakus ~/git/gitosis-admin $ git commit -a
[master 51cdf92] Created repository test.
1 files changed, 4 insertions(+), 0 deletions(-)
esmz-designz@abakus ~/git/gitosis-admin $ git push

Now everybody that was enabled is allowed to checkout your projects. To initiate a new project you can do the following:

esmz-designz@abakus ~/git/gitosis-admin $ cd ..
esmz-designz@abakus ~/git $ mkdir test
esmz-designz@abakus ~/git $ cd test/
esmz-designz@abakus ~/git/test $ git init
Initialized empty Git repository in /home/esmz-designz/git/test/.git/
esmz-designz@abakus ~/git/test $ git remote add origin gitosis@HOST:test.git

To commit a first file:

esmz-designz@abakus ~/git/test $ echo "Usain Bolt" > WM_BERLIN
esmz-designz@abakus ~/git/test $ git add WM_BERLIN
esmz-designz@abakus ~/git/test $ git commit -m "Start der ersten Revision"
[master (root-commit) 444915d] Start der ersten Revision
1 files changed, 1 insertions(+), 0 deletions(-)
create mode 100644 WM_BERLIN
esmz-designz@abakus ~/git/test $ git push origin master:refs/heads/master
Initialized empty Git repository in /home/git/repositories/test.git/
Counting objects: 3, done.
Writing objects: 100% (3/3), 245 bytes, done.
Total 3 (delta 0), reused 0 (delta 0)
To gitosis@HOST:test.git
* [new branch] master -> master
esmz-designz@abakus ~/git/test $

Voila, there is your repository! Check it out, change it, branch it, you know what to do!

Publish a repository

With this configuration only you and a bunch of people can see what you are doing in your spare time, but what if you want to publish you work? You can create a git daemon that listens on port 9418 of your server, waiting for a user who wants clone your code:

binfalse /home # sudo -u gitosis git-daemon --base-path=$GITOSISHOME/repositories --verbose --detach
binfalse /home # ps -ef | grep git
gitosis 3216 1 0 00:57 ? 00:00:00 git-daemon --base-path=$GITOSISHOME/repositories/ --verbose --detach
binfalse /home #

This service will serve any repository content if you create a file called $REPOSITORYHOME/git-daemon-export-ok in this repository (content isn’t necessary). Everybody knows that such a daemon tends to die sometimes, so I created a cronjob:

*/5 * * * * [ -z `pidof git-daemon` ] && sudo -u gitosis git-daemon --base-path=$GITOSISHOME/repositories/ --verbose --detach

Now everybody can clone repositories with that special file that allows public cloning by:

git clone git://HOST/REPOSITORY.git

That’s it! not that difficult but one has to know what to do! Have fun with your repository.

Martin Scharm

stuff. just for the records.

Do you like this page?
You can actively support me!

Leave a comment

There are multiple options to leave a comment: