Install Gitlab on Debian Squeeze/Wheezy

gitlab.sh

aptitude install -y git curl python-dev python-pip redis-server ruby1.9.1-full rubygems1.9.1
aptitude install -y mysql-server libmysqlclient-dev
adduser --system --shell /bin/sh --gecos 'git version control' --group --disabled-password --home /home/git git
adduser --disabled-login --gecos 'gitlab system' gitlab
usermod -a -G git gitlab
su - gitlab 
  ssh-keygen -q -N '' -t rsa -f /home/gitlab/.ssh/id_rsa
aptitude install gitolite
cp /home/gitlab/.ssh/id_rsa.pub /home/git/gitlab.pub
su - git
  cp /etc/gitolite/example.gitolite.rc ~/.gitolite.rc
  sed -i 's/0077/0007/g' .gitolite.rc
  gl-setup /home/git/gitlab.pub
  chmod -R g+rwX /home/git/repositories
# test:
su - gitlab
  git clone git@localhost:gitolite-admin.git /tmp/gitolite-admin
aptitude install make build-essential libicu-dev libsqlite3-dev
gem install bundler
pip install pygments
su - gitlab
  git clone git://github.com/gitlabhq/gitlabhq.git gitlab
  cd gitlab
  cp config/gitlab.yml.example config/gitlab.yml
  cp config/database.yml.sqlite config/database.yml
  # Change username/password in the config/database.yml file
  bundle install --without development test --deployment
  bundle exec rake gitlab:app:setup RAILS_ENV=production
  # test all is set up
  bundle exec rake gitlab:app:status RAILS_ENV=production
  bundle exec rails s -e production
  # start the resque worker
  ./resque.sh
aptitude install nginx
su - gitlab
  cd gitlab
  cp config/unicorn.rb.orig config/unicorn.rb
  bundle exec unicorn_rails -c config/unicorn.rb -E production -D
# append to the http section of the /etc/nginx/nginx.conf file
upstream gitlab {
    server unix:/home/gitlab/gitlab/tmp/sockets/gitlab.socket;
}
# remove nginx default site
rm /etc/nginx/sites-enabled/default
editor /etc/nginx/sites-available/gitlab

server {
    server_name localhost;
    root /home/gitlab/gitlab/public;

    # individual nginx logs for this gitlab vhost
    access_log  /var/log/nginx/gitlab_access.log;
    error_log   /var/log/nginx/gitlab_error.log;

    location / {
    # serve static files from defined root folder;.
    # @gitlab is a named location for the upstream fallback, see below
    try_files $uri $uri/index.html $uri.html @gitlab;
    }

    # if a file, which is not found in the root folder is requested, 
    # then the proxy pass the request to the upsteam (gitlab unicorn)
    location @gitlab {
      proxy_redirect     off;
      # you need to change this to "https", if you set "ssl" directive to "on"
      proxy_set_header   X-FORWARDED_PROTO http;
      proxy_set_header   Host              localhost:80;
      proxy_set_header   X-Real-IP         $remote_addr;

      proxy_pass http://gitlab;
    }

}
ln -s /etc/nginx/sites-available/gitlab /etc/nginx/sites-enabled/gitlab
service nginx restart
editor /etc/init.d/gitlab

#! /bin/bash
### BEGIN INIT INFO
# Provides:          gitlab
# Required-Start:    $local_fs $remote_fs $network $syslog redis-server
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: GitLab git repository management
# Description:       GitLab git repository management
### END INIT INFO

DAEMON_OPTS="-c /home/gitlab/gitlab/config/unicorn.rb -E production -D"
NAME=unicorn
DESC="Gitlab service"
PID=/home/gitlab/gitlab/tmp/pids/unicorn.pid
RESQUE_PID=/home/gitlab/gitlab/tmp/pids/resque_worker.pid

case "$1" in
  start)
        CD_TO_APP_DIR="cd /home/gitlab/gitlab"
        START_DAEMON_PROCESS="bundle exec unicorn_rails $DAEMON_OPTS"
        START_RESQUE_PROCESS="sh resque.sh"

        echo -n "Starting $DESC: "
        if [ `whoami` = root ]; then
          sudo -u gitlab sh -c "$CD_TO_APP_DIR > /dev/null 2>&1 && $START_DAEMON_PROCESS && $START_RESQUE_PROCESS"
        else
          $CD_TO_APP_DIR > /dev/null 2>&1 && $START_DAEMON_PROCESS && $START_RESQUE_PROCESS
        fi
        echo "$NAME."
        ;;
  stop)
        echo -n "Stopping $DESC: "
        kill -QUIT `cat $PID`
        kill -QUIT `cat $RESQUE_PID`
        echo "$NAME."
        ;;
  restart)
        echo -n "Restarting $DESC: "
        kill -USR2 `cat $PID`
        kill -USR2 `cat $RESQUE_PID`
        echo "$NAME."
        ;;
  reload)
        echo -n "Reloading $DESC configuration: "
        kill -HUP `cat $PID`
        kill -HUP `cat $RESQUE_PID`
        echo "$NAME."
        ;;
  *)
        echo "Usage: $NAME {start|stop|restart|reload}" >&2
        exit 1
        ;;
esac

exit 0

chmod +x /etc/init.d/gitlab
insserv gitlab
service gitlab restart

Modules in log:
rake
i18n
multi_json
activesupport
builder
activemodel
erubis
journey
rack
rack-cache
rack-test
hike
tilt
sprockets
actionpack
mime-types
polyglot
treetop
mail
actionmailer
arel
tzinfo
activerecord
activeresource
Using
rack-ssl
json
rdoc
thor
railties
rails
acts-as-taggable-on
acts_as_list
bcrypt-ruby
blankslate
bootstrap-sass
carrierwave
charlock_holmes
chosen-rails
coffee-script-source
execjs
coffee-script
coffee-rails
colored
daemons
orm_adapter
warden
devise
diff-lcs
drapper
escape_utils
eventmachine

Module Package Names:
xargs apt-get -fy -t wheezy install; # Just paste the first line.
(Then paste everything after this line on the next line)
ruby-minitest/wheezy
ruby-arel
ruby1.8-dev=1.8.7.358-4
ruby-treetop
ruby-i18n
rake
libi18n-ruby/wheezy
ruby-builder
ruby-erubis
ruby-journey
ruby-rack
ruby-rack-cache
ruby-rack-test
ruby-hike
ruby-tilt
ruby-sprockets
ruby-mime-types
ruby-polyglot
ruby-treetop
ruby-mail
ruby-arel
ruby-tzinfo
ruby-rack-ssl
ruby-json
ruby-thor
ruby-passenger
ruby-bcrypt
ruby-blankslate
ruby-daemons
ruby-diff-lcs
ruby-eventmachine
ruby-rails-2.3
ruby-activesupport-2.3
ruby-activerecord-2.3
ruby-actionpack-2.3
ruby-actionmailer-2.3
ruby-activeresource-2.3
(hit ctrl-d)

Make sure you don't get ruby1.9.1, it's not ready ATM.

The instructions here seam better, but they seam to ignore any possibility of ever using deb packages. Well I guess since ruby needs to be a whopping 1.9.2-p290.

https://github.com/gitlabhq/gitlabhq/blob/stable/doc/installation.md

Gitlab 5 uses gitlab-shell instead of gitolite which after testing runs faster and is more stable. Try adapting the script.
(The install-how-to on gitlabhq is very good and understandable)

Newer howto: http://www.rosehosting.com/blog/how-to-install-gitlab-ruby-and-nginx-on-a-debian-7-wheezy-vps/

Official installation instructions https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/install/installation.md

Please consider using the package for Debian, it installs in 2 minutes https://about.gitlab.com/downloads/

The omnibus sucks as it installs a bunch of non-tracked files and doesn't allow you to use a remote SQL server.