add_user_to_group.sh

sudo usermod -aG git www-data

gitlab.conf

server {
  listen *:80;
  server_name git.yourdomain.com;
  server_tokens off;
  root /opt/gitlab/embedded/service/gitlab-rails/public;

  client_max_body_size 250m;

  access_log  /var/log/gitlab/nginx/gitlab_access.log;
  error_log   /var/log/gitlab/nginx/gitlab_error.log;

  passenger_ruby /opt/gitlab/embedded/bin/ruby;
  passenger_set_cgi_param PATH "/opt/gitlab/bin:/opt/gitlab/embedded/bin:/usr/local/bin:/usr/bin:/bin";
  passenger_user git;
  passenger_group git;

  passenger_enabled on;
  passenger_min_instances 1;

  error_page 502 /502.html;
}

gitlab.rb

external_url "http://git.yourdomain.com"

# Disable the built-in Postgres
postgresql['enable'] = false

# Fill in the values for database.yml
gitlab_rails['db_adapter'] = 'postgresql'
gitlab_rails['db_encoding'] = 'utf8'
gitlab_rails['db_host'] = '127.0.0.1'
gitlab_rails['db_port'] = '5432'
gitlab_rails['db_username'] = 'username'
gitlab_rails['db_password'] = 'password'

# Configure other GitLab settings
gitlab_rails['internal_api_url'] = 'http://git.yourdomain.com'

# Disable the built-in nginx
nginx['enable'] = false

# Disable the built-in unicorn
unicorn['enable'] = false