Table of Contents

1. Overview
2. Module Description - What the module does and why it is useful
3. Setup - The basics of getting started with gitlab
   • What gitlab affects
   • Setup requirements
   • Beginning with gitlab
4. Usage - Configuration options and additional functionality
5. Reference - An under-the-hood peek at what the module is doing and how
6. Limitations - OS compatibility, etc.
7. Development - Guide for contributing to the module

Overview

This Puppet module installs and manages Gitlab. It makes use of the provided Omnibus packages and the packagecloud package repositories.

Module Description

The module installs the Gitlab package from the provided repositories and creates the configuration file which is then used by gitlab-ctl reconfigure to configure all the services. Fun fact: This really uses Chef to configure all the services.

Supported are Debian based (Ubuntu, Debian) and RedHat based (CentOS, RHEL) operating systems. Although the RedHat based are not yet tested.

As Gitlab is providing the package repo since 7.10+, this module only works with CE edition greater than 7.10. Also the enterprise edition package is only available since 7.11+. So the EE is supported with versions greater than 7.11.

Setup

What gitlab affects

• Package repository (APT or YUM)
• Package gitlab-ce or gitlab-ee (depending on the chosen edition)
• Configuration file /etc/gitlab/gitlab.rb
• System service gitlab-runsvdir
• Gitlab configuration using gitlab-ctl reconfigure

Setup Requirements

Have a look at the official download page for the required prerequisits (f.e. Postfix). This module doesn't handle them, that's the job of the specific modules.

It requires only the puppetlabs-apt module when using it under a Debian based OS and the paramater manage_package_repo is not false. Furthermore the stdlib module is required.

At least on RedHat based OS versions, it's required that Puppet is configured with the stringify_facts setting set to false (Puppet < 4.0), otherwise the $::os fact used in install.pp doesn't work as expected.

Beginning with Gitlab

Just include the class and specify at least external_url.

class { 'gitlab':
  external_url => 'http://gitlab.mydomain.tld',
}

The module also supports Hiera, here comes an example:

gitlab::external_url: 'http://gitlab.mydomain.tld'
gitlab::gitlab_rails:
  time_zone: 'UTC'
  gitlab_email_enabled: false
  gitlab_default_theme: 4
  gitlab_email_display_name: 'Gitlab'
gitlab::sidekiq:
  shutdown_timeout: 5

If one wants to install Gitlab Enterprise Edition, just define the parameter edition with the value ee:

class { 'gitlab':
  external_url => 'http://gitlab.mydomain.tld',
  edition      => 'ee',
}

Note: This works only for Gitlab version 7.11 and greater. See this blog entry: GitLab 7.11 released with Two-factor Authentication and a publicly viewable Enterprise Edition

Usage

To find the default values, have a look at params.pp. All other parameters are documented inside init.pp.

The main class (init.pp) exposes the configuration sections from the gitlab.rb configuration file as hashes. So if there are any parameter changes in future versions of Gitlab, the module should support them right out of the box. Only if there would be bigger changes to sections, the module would need some updates.

All possible parameters for gitlab.rb can be found here: gitlab.rb.template

Some examples:

class { 'gitlab':
  external_url => 'http://gitlab.mydomain.tld',
  gitlab_rails => {
    'webhook_timeout' => 10,
    'gitlab_default_theme' => 2,
  },
  logging      => {
    'svlogd_size' => '200 * 1024 * 1024',
  },
}

Gitlab secrets

To manage /etc/gitlab/gitlab-secrets.json the parameter secrets accepts a hash. Here is an example how to use it with Hiera:

gitlab::secrets:
  gitlab_shell:
    secret_token: 'asecrettoken1234567890'
  gitlab_rails:
    secret_token: 'asecrettoken123456789010'
  gitlab_ci:
    secret_token: null
    secret_key_base: 'asecrettoken123456789011'
    db_key_base: 'asecrettoken123456789012'

Hint 1: This secret tokens can be generated f.e. using Ruby with SecureRandom.hex(64), or taken out of an installation without having secrets used.
Hint 2: When using the gitlab_ci parameter to specify the gitlab_server, then this parameters must be added also to the secrets hash (Omnibus overrides gitlab-secrets.json).

LDAP configuration example

Here is an example how to configure LDAP using Hiera:

gitlab::gitlab_rails:
  ldap_enabled: true
  ldap_servers:
    myldapserver:
      label: 'Company LDAP'
      host: 'ldap.company.tld'
      port: 389
      uid: 'uid'
      method: 'plain' # "tls" or "ssl" or "plain"
      bind_dn: 'MYBINDDN'
      password: 'MYBINDPW'
      active_directory: false
      allow_username_or_email_login: false
      block_auto_created_users: false
      base: 'MYBASEDN'
      group_base: 'MYGROUPBASE'
      user_filter: ''

Gitlab CI Runner Config

Here is an example how to configure Gitlab CI runners using Hiera:

To use the Gitlab CI runners it is required to have the garethr/docker module.

$manage_docker can be set to false if docker is managed externaly.

classes:
  - gitlab::cirunner

gitlab::cirunner::concurrent: 4

gitlab_ci_runners:
  test_runner1:{}
  test_runner2:{}
  test_runner3:
    url: "https://git.alternative.org/ci"
    registration-token: "abcdef1234567890"

gitlab_ci_runners_defaults:
  url: "https://git.example.com/ci"
  registration-token: "1234567890abcdef"
  executor: "docker"
  docker-image: "ubuntu:trusty"

NGINX Configuration

Configuration of the embedded NGINX instance is handled by the /etc/gitlab/gitlab.rb file. Details on available configuration options are available at http://doc.gitlab.com/omnibus/settings/nginx.html. Options listed here can be passed in to the nginx parameter as a hash. For example, to enable ssh redirection:

class { 'gitlab':
  external_url => 'https://gitlab.mydomain.tld',
  nginx        => {
    redirect_http_to_https => true,
  },
}

Similarly, the certificate and key location can be configured as follows:

class { 'gitlab':
  external_url => 'https://gitlab.mydomain.tld',
  nginx        => {
    ssl_certificate     => '/etc/gitlab/ssl/gitlab.example.com.crt',
    ssl_certificate_key => '/etc/gitlab/ssl/gitlab.example.com.key'
  },
}

Gitlab Custom Hooks

Manage custom hook files within a GitLab project. Custom hooks can be created as a pre-receive, post-receive, or update hook. It's possible to create different custom hook types for the same project - one each for pre-receive, post-receive and update.

gitlab::custom_hook { 'my_custom_hook':
  namespace       => 'my_group',
  project         => 'my_project',
  type            => 'post-receive',
  source          => 'puppet:///modules/my_module/post-receive',
}

or via hiera

gitlab::custom_hooks:
  my_custom_hook:
    namespace: my_group
    project: my_project
    type: post-receive
    source: 'puppet:///modules/my_module/post-receive'

Limitations

The supported operating systems by Gitlab Omnibus are to be found on the official download page. At the moment the module is not yet tested under RPM based operating systems. But in theory it should work as all the preparations are there.

Gitlab CI Runner Limitations

The Gitlab CI runner installation is at the moment only tested on Ubuntu 14.04.

Development

1. Fork it (https://github.com/vshn/puppet-gitlab/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Make sure your PR passes the Rspec tests.

Contributors

Have a look at Github contributors to see a list of all the awesome contributors to this Puppet module. <3