This is the first post of the git series – small useful tips for the everyday git.
This tutorial is about Gitosis setup. From the project’s readme:
Gitosis aims to make hosting
gitrepos easier and safer. It manages multiple repositories under one user account, using SSH keys to identify users. End users do not need shell accounts on the server, they will talk to one shared account that will not let them run arbitrary commands.
For this recipe, we will use some conventions:
- user@local$ for commands that should be run at your local machine.
- user@srv$ for commands that should be run at your server.
- git@srv$ for commands that should be run with the git user (we’ll create this later, delete this user or use another name if you already has it on your server).
- all root access will be done through sudo.
- lines ending with must be typed in one line
We will need a linux server; my setup will be based on a ubuntu system, but you can use almost any *nix flavor.
You will need to have an ssh server installed as pre-requisite – run
sudo apt-get install ssh to install it. (thanks DJC)
Install Compilation Tools & required libs for git
user@srv:~$ sudo apt-get install build-essential libssl-dev zlib1g-dev libcurl4-openssl-dev libexpat-dev
Download & uncompress Git sources
user@srv:~$ wget http://kernel.org/pub/software/scm/git/git-22.214.171.124.tar.bz2 user@srv:~$ tar -jxvf git-126.96.36.199.tar.bz2
Build & install git
user@srv:~$ cd git-188.8.131.52 user@srv:~/git-184.108.40.206$ make prefix=/usr/local NO_TCLTK=1 all user@srv:~/git-220.127.116.11$ sudo make prefix=/usr/local NO_TCLTK=1 install user@srv:~/git-18.104.22.168$ cd
Install required python libs
user@srv:~$ sudo apt-get install python-setuptools
Download & install gitosis
user@srv:~$ git clone git://eagain.net/gitosis.git user@srv:~$ cd gitosis user@srv:~/gitosis$ sudo python setup.py install
Create our git user
user@srv:~$ sudo useradd -s /bin/bash -U -d /var/lib/git -m -r git
Generate the gitosis-admin ssh key (if you don’t have one already)
user@local:~$ ssh-keygen -t rsa -C user press enter for the default location, then provide it with a passphrase copy the generated public key to server user@local:~$ scp ~/.ssh/id_rsa.pub user@srv:/tmp/user.pub
Log in as the newly created git user
user@srv:~$ sudo su - git git@srv:~$
git@srv:~$ gitosis-init < /tmp/user.pub Initialized empty Git repository in /var/lib/git/repositories/gitosis-admin.git/ Reinitialized existing Git repository in /var/lib/git/repositories/gitosis-admin.git/
Adjust some permissions on admin repository
git@srv:~$ chmod +x ~/repositories/gitosis-admin.git/hooks/post-update
Clone the gitosis-admin repository
user@local:~$ git clone git@srv:gitosis-admin.git Initialized empty Git repository in /home/user/gitosis-admin/.git/ remote: Counting objects: 5, done. remote: Compressing objects: 100% (4/4), done. remote: Total 5 (delta 0), reused 5 (delta 0) Receiving objects: 100% (5/5), done.
Voilà! Your gitosis setup is working! Let’s take a look at gitosis’s structure:
gitosis.conf keydir/ keydir/user.pub
To finish our recipe, lets add a new user & a new repository
Let’s call our new user john
Get john’s ssh public key and put it inside keydir/john.pub
Add to gitosis.conf:
[group new-repo] writable = new-repo members = user john
As gitosis is managed by git itself, let’s commit our changes:
user@local:~/gitosis-admin$ git status # On branch master # Changed but not updated: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: gitosis.conf # # Untracked files: # (use "git add <file>..." to include in what will be committed) # # keydir/john.pub no changes added to commit (use "git add" and/or "git commit -a") user@local:~/gitosis-admin$ git add keydir/john.pub gitosis.conf user@local:~/gitosis-admin$ git commit -m "added new-repo + john keys" [master ad62139] added new-repo + john keys 2 files changed, 4 insertions(+), 0 deletions(-) create mode 100644 keydir/john.pub user@local:~/gitosis-admin$ git push origin master Counting objects: 8, done. Compressing objects: 100% (5/5), done. Writing objects: 100% (5/5), 1.02 KiB, done. Total 5 (delta 0), reused 0 (delta 0) To git@srv:gitosis-admin.git bdc4dbc..ad62139 master -> master
Finally, let’s john push his work to the shiny new repository:
john@local2:~/new-repo$ git remote add origin git@srv:new-repo.git john@local2:~/new-repo$ git push origin master Counting objects: 3, done. Delta compression using up to 2 threads. Compressing objects: 100% (2/2), done. Writing objects: 100% (3/3), 241 bytes, done. Total 3 (delta 0), reused 0 (delta 0) To git@srv:new-repo.git * [new branch] master -> master
C’est fini! A complete setup running. Enjoy!
If you have any doubts / corrections, please comment!
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