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# How to configure LDAP with GitLab CE
> **[Article Type](../../../development/writing_documentation.html#types-of-technical-articles):** admin guide ||
> **Level:** intermediary ||
> **Author:** [Chris Wilson](https://gitlab.com/MrChrisW) ||
> **Publication date:** 2017-05-03
## Introduction
Managing a large number of users in GitLab can become a burden for system administrators. As an organization grows so do user accounts. Keeping these user accounts in sync across multiple enterprise applications often becomes a time consuming task.
In this guide we will focus on configuring GitLab with Active Directory. [Active Directory](https://en.wikipedia.org/wiki/Active_Directory) is a popular LDAP compatible directory service provided by Microsoft, included in all modern Windows Server operating systems.
GitLab has supported LDAP integration since [version 2.2](https://about.gitlab.com/2012/02/22/gitlab-version-2-2/). With GitLab LDAP [group syncing](#group-syncing-ee) being added to GitLab Enterprise Edition in [version 6.0](https://about.gitlab.com/2013/08/20/gitlab-6-dot-0-released/). LDAP integration has become one of the most popular features in GitLab.
## Getting started
### Choosing an LDAP Server
The main reason organizations choose to utilize a LDAP server is to keep the entire organization's user base consolidated into a central repository. Users can access multiple applications and systems across the IT environment using a single login. Because LDAP is an open, vendor-neutral, industry standard application protocol, the number of applications using LDAP authentication continues to increase.
There are many commercial and open source [directory servers](https://en.wikipedia.org/wiki/Directory_service#LDAP_implementations) that support the LDAP protocol. Deciding on the right directory server highly depends on the existing IT environment in which the server will be integrated with.
For example, [Active Directory](https://technet.microsoft.com/en-us/library/hh831484(v=ws.11).aspx) is generally favored in a primarily Windows environment, as this allows quick integration with existing services. Other popular directory services include:
- [Oracle Internet Directory](http://www.oracle.com/technetwork/middleware/id-mgmt/overview/index-082035.html)
- [OpenLDAP](http://www.openldap.org/)
- [389 Directory](http://directory.fedoraproject.org/)
- [OpenDJ](https://forgerock.org/opendj/)
- [ApacheDS](https://directory.apache.org/)
> GitLab uses the [Net::LDAP](https://rubygems.org/gems/net-ldap) library under the hood. This means it supports all [IETF](https://tools.ietf.org/html/rfc2251) compliant LDAPv3 servers.
### Active Directory (AD)
We won't cover the installation and configuration of Windows Server or Active Directory Domain Services in this tutorial. There are a number of resources online to guide you through this process:
- Install Windows Server 2012 - (_technet.microsoft.com_) - [Installing Windows Server 2012 ](https://technet.microsoft.com/en-us/library/jj134246(v=ws.11).aspx)
- Install Active Directory Domain Services (AD DS) (_technet.microsoft.com_)- [Install Active Directory Domain Services](https://technet.microsoft.com/windows-server-docs/identity/ad-ds/deploy/install-active-directory-domain-services--level-100-#BKMK_PS)
> **Shortcut:** You can quickly install AD DS via PowerShell using
`Install-WindowsFeature AD-Domain-Services -IncludeManagementTools`
### Creating an AD **OU** structure
Configuring organizational units (**OU**s) is an important part of setting up Active Directory. **OU**s form the base for an entire organizational structure. Using GitLab as an example we have designed the **OU** structure below using the geographic **OU** model. In the Geographic Model we separate **OU**s for different geographic regions.
| GitLab **OU** Design | GitLab AD Structure |
| :----------------------------: | :------------------------------: |
| ![GitLab OU Design][gitlab_ou] | ![GitLab AD Structure][ldap_ou] |
[gitlab_ou]: img/gitlab_ou.png
[ldap_ou]: img/ldap_ou.gif
Using PowerShell you can output the **OU** structure as a table (_all names are examples only_):
```ps
Get-ADObject -LDAPFilter "(objectClass=*)" -SearchBase 'OU=GitLab INT,DC=GitLab,DC=org' -Properties CanonicalName | Format-Table Name,CanonicalName -A
```
```
OU CanonicalName
---- -------------
GitLab INT GitLab.org/GitLab INT
United States GitLab.org/GitLab INT/United States
Developers GitLab.org/GitLab INT/United States/Developers
Gary Johnson GitLab.org/GitLab INT/United States/Developers/Gary Johnson
Ellis Matthews GitLab.org/GitLab INT/United States/Developers/Ellis Matthews
William Collins GitLab.org/GitLab INT/United States/Developers/William Collins
People Ops GitLab.org/GitLab INT/United States/People Ops
Margaret Baker GitLab.org/GitLab INT/United States/People Ops/Margaret Baker
Libby Hartzler GitLab.org/GitLab INT/United States/People Ops/Libby Hartzler
Victoria Ryles GitLab.org/GitLab INT/United States/People Ops/Victoria Ryles
The Netherlands GitLab.org/GitLab INT/The Netherlands
Developers GitLab.org/GitLab INT/The Netherlands/Developers
John Doe GitLab.org/GitLab INT/The Netherlands/Developers/John Doe
Jon Mealy GitLab.org/GitLab INT/The Netherlands/Developers/Jon Mealy
Jane Weingarten GitLab.org/GitLab INT/The Netherlands/Developers/Jane Weingarten
Production GitLab.org/GitLab INT/The Netherlands/Production
Sarah Konopka GitLab.org/GitLab INT/The Netherlands/Production/Sarah Konopka
Cynthia Bruno GitLab.org/GitLab INT/The Netherlands/Production/Cynthia Bruno
David George GitLab.org/GitLab INT/The Netherlands/Production/David George
United Kingdom GitLab.org/GitLab INT/United Kingdom
Developers GitLab.org/GitLab INT/United Kingdom/Developers
Leroy Fox GitLab.org/GitLab INT/United Kingdom/Developers/Leroy Fox
Christopher Alley GitLab.org/GitLab INT/United Kingdom/Developers/Christopher Alley
Norris Morita GitLab.org/GitLab INT/United Kingdom/Developers/Norris Morita
Support GitLab.org/GitLab INT/United Kingdom/Support
Laura Stanley GitLab.org/GitLab INT/United Kingdom/Support/Laura Stanley
Nikki Schuman GitLab.org/GitLab INT/United Kingdom/Support/Nikki Schuman
Harriet Butcher GitLab.org/GitLab INT/United Kingdom/Support/Harriet Butcher
Global Groups GitLab.org/GitLab INT/Global Groups
DevelopersNL GitLab.org/GitLab INT/Global Groups/DevelopersNL
DevelopersUK GitLab.org/GitLab INT/Global Groups/DevelopersUK
DevelopersUS GitLab.org/GitLab INT/Global Groups/DevelopersUS
ProductionNL GitLab.org/GitLab INT/Global Groups/ProductionNL
SupportUK GitLab.org/GitLab INT/Global Groups/SupportUK
People Ops US GitLab.org/GitLab INT/Global Groups/People Ops US
Global Admins GitLab.org/GitLab INT/Global Groups/Global Admins
```
> See [more information](https://technet.microsoft.com/en-us/library/ff730967.aspx) on searching Active Directory with Windows PowerShell from [The Scripting Guys](https://technet.microsoft.com/en-us/scriptcenter/dd901334.aspx)
## GitLab LDAP configuration
The initial configuration of LDAP in GitLab requires changes to the `gitlab.rb` configuration file. Below is an example of a complete configuration using an Active Directory.
The two Active Directory specific values are `active_directory: true` and `uid: 'sAMAccountName'`. `sAMAccountName` is an attribute returned by Active Directory used for GitLab usernames. See the example output from `ldapsearch` for a full list of attributes a "person" object (user) has in **AD** - [`ldapsearch` example](#using-ldapsearch-unix)
> Both group_base and admin_group configuration options are only available in GitLab Enterprise Edition. See [GitLab EE - LDAP Features](#gitlab-enterprise-edition---ldap-features)
### Example `gitlab.rb` LDAP
```
gitlab_rails['ldap_enabled'] = true
gitlab_rails['ldap_servers'] = {
'main' => {
'label' => 'GitLab AD',
'host' => 'ad.example.org',
'port' => 636,
'uid' => 'sAMAccountName',
'encryption' => 'simple_tls',
'verify_certificates' => true,
'bind_dn' => 'CN=GitLabSRV,CN=Users,DC=GitLab,DC=org',
'password' => 'Password1',
'active_directory' => true,
'base' => 'OU=GitLab INT,DC=GitLab,DC=org',
'group_base' => 'OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=org',
'admin_group' => 'Global Admins'
}
}
```
> **Note:** Remember to run `gitlab-ctl reconfigure` after modifying `gitlab.rb`
## Security improvements (LDAPS)
Security is an important aspect when deploying an LDAP server. By default, LDAP traffic is transmitted unsecured. LDAP can be secured using SSL/TLS called LDAPS, or commonly "LDAP over SSL".
Securing LDAP (enabling LDAPS) on Windows Server 2012 involves installing a valid SSL certificate. For full details see Microsoft's guide [How to enable LDAP over SSL with a third-party certification authority](https://support.microsoft.com/en-us/help/321051/how-to-enable-ldap-over-ssl-with-a-third-party-certification-authority)
> By default a LDAP service listens for connections on TCP and UDP port 389. LDAPS (LDAP over SSL) listens on port 636
### Testing you AD server
#### Using **AdFind** (Windows)
You can use the [`AdFind`](https://social.technet.microsoft.com/wiki/contents/articles/7535.adfind-command-examples.aspx) utility (on Windows based systems) to test that your LDAP server is accessible and authentication is working correctly. This is a freeware utility built by [Joe Richards](http://www.joeware.net/freetools/tools/adfind/index.htm).
**Return all objects**
You can use the filter `objectclass=*` to return all directory objects.
```sh
adfind -h ad.example.org:636 -ssl -u "CN=GitLabSRV,CN=Users,DC=GitLab,DC=org" -up Password1 -b "OU=GitLab INT,DC=GitLab,DC=org" -f (objectClass=*)
```
**Return single object using filter**
You can also retrieve a single object by **specifying** the object name or full **DN**. In this example we specify the object name only `CN=Leroy Fox`.
```sh
adfind -h ad.example.org:636 -ssl -u "CN=GitLabSRV,CN=Users,DC=GitLab,DC=org" -up Password1 -b "OU=GitLab INT,DC=GitLab,DC=org" -f (&(objectcategory=person)(CN=Leroy Fox))”
```
#### Using **ldapsearch** (Unix)
You can use the `ldapsearch` utility (on Unix based systems) to test that your LDAP server is accessible and authentication is working correctly. This utility is included in the [`ldap-utils`](https://wiki.debian.org/LDAP/LDAPUtils) package.
**Return all objects**
You can use the filter `objectclass=*` to return all directory objects.
```sh
ldapsearch -D "CN=GitLabSRV,CN=Users,DC=GitLab,DC=org" \
-w Password1 -p 636 -h ad.example.org \
-b "OU=GitLab INT,DC=GitLab,DC=org" -Z \
-s sub "(objectclass=*)"
```
**Return single object using filter**
You can also retrieve a single object by **specifying** the object name or full **DN**. In this example we specify the object name only `CN=Leroy Fox`.
```sh
ldapsearch -D "CN=GitLabSRV,CN=Users,DC=GitLab,DC=org" -w Password1 -p 389 -h ad.example.org -b "OU=GitLab INT,DC=GitLab,DC=org" -Z -s sub "CN=Leroy Fox"
```
**Full output of `ldapsearch` command:** - Filtering for _CN=Leroy Fox_
```
# LDAPv3
# base <OU=GitLab INT,DC=GitLab,DC=org> with scope subtree
# filter: CN=Leroy Fox
# requesting: ALL
#
# Leroy Fox, Developers, United Kingdom, GitLab INT, GitLab.org
dn: CN=Leroy Fox,OU=Developers,OU=United Kingdom,OU=GitLab INT,DC=GitLab,DC=or
g
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: user
cn: Leroy Fox
sn: Fox
givenName: Leroy
distinguishedName: CN=Leroy Fox,OU=Developers,OU=United Kingdom,OU=GitLab INT,
DC=GitLab,DC=org
instanceType: 4
whenCreated: 20170210030500.0Z
whenChanged: 20170213050128.0Z
displayName: Leroy Fox
uSNCreated: 16790
memberOf: CN=DevelopersUK,OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=org
uSNChanged: 20812
name: Leroy Fox
objectGUID:: rBCAo6NR6E6vfSKgzcUILg==
userAccountControl: 512
badPwdCount: 0
codePage: 0
countryCode: 0
badPasswordTime: 0
lastLogoff: 0
lastLogon: 0
pwdLastSet: 131311695009850084
primaryGroupID: 513
objectSid:: AQUAAAAAAAUVAAAA9GMAb7tdJZvsATf7ZwQAAA==
accountExpires: 9223372036854775807
logonCount: 0
sAMAccountName: Leroyf
sAMAccountType: 805306368
userPrincipalName: Leroyf@GitLab.org
objectCategory: CN=Person,CN=Schema,CN=Configuration,DC=GitLab,DC=org
dSCorePropagationData: 16010101000000.0Z
lastLogonTimestamp: 131314356887754250
# search result
search: 2
result: 0 Success
# numResponses: 2
# numEntries: 1
```
## Basic user authentication
After configuring LDAP, basic authentication will be available. Users can then login using their directory credentials. An extra tab is added to the GitLab login screen for the configured LDAP server (e.g "**GitLab AD**").
![GitLab OU Structure](img/user_auth.gif)
Users that are removed from the LDAP base group (e.g `OU=GitLab INT,DC=GitLab,DC=org`) will be **blocked** in GitLab. [More information](../ldap.md#security) on LDAP security.
If `allow_username_or_email_login` is enabled in the LDAP configuration, GitLab will ignore everything after the first '@' in the LDAP username used on login. Example: The username `jon.doe@example.com` is converted to `jon.doe` when authenticating with the LDAP server. Disable this setting if you use `userPrincipalName` as the `uid`.
## LDAP extended features on GitLab EE
With [GitLab Enterprise Edition (EE)](https://about.gitlab.com/gitlab-ee/), besides everything we just described, you'll
have extended functionalities with LDAP, such as:
- Group sync
- Group permissions
- Updating user permissions
- Multiple LDAP servers
Read through the article on [LDAP for GitLab EE](../how_to_configure_ldap_gitlab_ee/index.md) for an overview.
doc/administration/auth/how_to_configure_ldap_gitlab_ee/index.md 0 → 100644
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# How to configure LDAP with GitLab EE
> **[Article Type](../../../development/writing_documentation.html#types-of-technical-articles):** admin guide ||
> **Level:** intermediary ||
> **Author:** [Chris Wilson](https://gitlab.com/MrChrisW) ||
> **Publication date:** 2017/05/03
## Introduction
The present article follows [How to Configure LDAP with GitLab CE](../how_to_configure_ldap_gitlab_ce/index.md). Make sure to read through it before moving forward.
## GitLab Enterprise Edition - LDAP features
[GitLab Enterprise Edition (EE)](https://about.gitlab.com/gitlab-ee/) has a number of advantages when it comes to integrating with Active Directory (LDAP):
- [Administrator Sync](#administrator-sync): As an extension of group sync, you can automatically manage your global GitLab administrators. Specify a group CN for `admin_group` and all members of the LDAP group will be given administrator privileges.
- [Group Sync](#group-sync): This allows GitLab group membership to be automatically updated based on LDAP group members.
- [Multiple LDAP servers](#multiple-ldap-servers): The ability to configure multiple LDAP servers. This is useful if an organization has different LDAP servers within departments. This is not designed for failover. We're working on [supporting LDAP failover](https://gitlab.com/gitlab-org/gitlab-ee/issues/139) in GitLab.
- Daily user synchronization: Once a day, GitLab will run a synchronization to check and update GitLab users against LDAP. This process updates all user details automatically.
On the following section, you'll find a description for each of these features. Read through [LDAP GitLab EE docs](../ldap-ee.md) for complementary information.
![GitLab OU Structure](img/admin_group.png)
All members of the group `Global Admins` will be given **administrator** access to GitLab, allowing them to view the `/admin` dashboard.
### Group Sync
Group syncing allows AD (LDAP) groups to be mapped to GitLab groups. This provides more control over per-group user management. To configure group syncing edit the `group_base` **DN** (`'OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=org'`). This **OU** contains all groups that will be associated with [GitLab groups](../../../user/group/index.md).
#### Creating group links - example
As an example, let's suppose we have a "UKGov" GitLab group, which deals with confidential government information. Therefore, it is important that users of this group are given the correct permissions to projects contained within the group. Granular group permissions can be applied based on the AD group.
**UK Developers** of our "UKGov" group are given **"developer"** permissions.
_The developer permission allows the development staff to effectively manage all project code, issues, and merge requests._
**UK Support** staff of our "UKGov" group are given **"reporter"** permissions.
_The reporter permission allows support staff to manage issues, labels, and review project code._
**US People Ops** of our "UKGov" group are given **"guest"** permissions.
![Creating group links](img/group_linking.gif)
> Guest permissions allows people ops staff to review and lodge new issues while allowing no read or write access to project code or [confidential issues](../../../user/project/issues/confidential_issues.md#permissions-and-access-to-confidential-issues) created by other users.
See the [permission list](../../user/permissions.md) for complementary info.
#### Group permissions - example
Considering the previous example, our staff will have
access to our GitLab instance with the following structure:
![GitLab OU Structure](img/group_link_final.png)
Using this permission structure in our example allows only UK staff access to sensitive information stored in the projects code, while still allowing other teams to work effectively. As all permissions are controlled via AD groups new users can be quickly added to existing groups. New group members will then automatically inherit the required permissions.
> [More information](../ldap-ee.md#group-sync) on group syncing.
### Updating user permissions - new feature
Since GitLab [v8.15](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/822) LDAP user permissions can now be manually overridden by an admin user. To override a user's permissions visit the groups **Members** page and select **Edit permissions**.
![Setting manual permissions](img/manual_permissions.gif)
### Multiple LDAP servers
GitLab EE can support multiple LDAP servers. Simply configure another server in the `gitlab.rb` file within the `ldap_servers` block. In the example below we configure a new secondary server with the label **GitLab Secondary AD**. This is shown on the GitLab login screen. Large enterprises often utilize multiple LDAP servers for segregating organizational departments.
![Multiple LDAP Servers Login](img/multi_login.gif)
Considering the example illustrated on the image above,
our `gitlab.rb` configuration would look like:
```ruby
gitlab_rails['ldap_enabled'] = true
gitlab_rails['ldap_servers'] = {
'main' => {
'label' => 'GitLab AD',
'host' => 'ad.example.org',
'port' => 636,
'uid' => 'sAMAccountName',
'method' => 'ssl',
'bind_dn' => 'CN=GitLabSRV,CN=Users,DC=GitLab,DC=org',
'password' => 'Password1',
'active_directory' => true,
'base' => 'OU=GitLab INT,DC=GitLab,DC=org',
'group_base' => 'OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=org',
'admin_group' => 'Global Admins'
},
'secondary' => {
'label' => 'GitLab Secondary AD',
'host' => 'ad-secondary.example.net',
'port' => 636,
'uid' => 'sAMAccountName',
'method' => 'ssl',
'bind_dn' => 'CN=GitLabSRV,CN=Users,DC=GitLab,DC=com',
'password' => 'Password1',
'active_directory' => true,
'base' => 'OU=GitLab Secondary,DC=GitLab,DC=com',
'group_base' => 'OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=com',
'admin_group' => 'Global Admins'
}
}
```
## Conclusion
Integration of GitLab with Active Directory (LDAP) reduces the complexity of user management.
It has the advantage of improving user permission controls, whilst easing the deployment of GitLab into an existing [IT environment](https://www.techopedia.com/definition/29199/it-infrastructure). GitLab EE offers advanced group management and multiple LDAP servers.
With the assistance of the [GitLab Support](https://about.gitlab.com/support) team, setting up GitLab with an existing AD/LDAP solution will be a smooth and painless process.
doc/administration/auth/ldap.md
View file @ 7ae55b64
...@@ -47,6 +47,10 @@ in the application settings. ...@@ -47,6 +47,10 @@ in the application settings.
## Configuration ## Configuration
For a complete guide on configuring LDAP with GitLab Community Edition, please check
the admin guide [How to configure LDAP with GitLab CE](how_to_configure_ldap_gitlab_ce/index.md).
For GitLab Enterprise Editions, see also [How to configure LDAP with GitLab EE](how_to_configure_ldap_gitlab_ee/index.md).
To enable LDAP integration you need to add your LDAP server settings in To enable LDAP integration you need to add your LDAP server settings in
`/etc/gitlab/gitlab.rb` or `/home/git/gitlab/config/gitlab.yml`. `/etc/gitlab/gitlab.rb` or `/home/git/gitlab/config/gitlab.yml`.
......
doc/articles/how_to_configure_ldap_gitlab_ce/index.md
View file @ 7ae55b64
# How to configure LDAP with GitLab CE This document was moved to [another location](../../administration/auth/how_to_configure_ldap_gitlab_ce/index.md).
> **Article [Type](../../development/writing_documentation.html#types-of-technical-articles):** admin guide ||
> **Level:** intermediary ||
> **Author:** [Chris Wilson](https://gitlab.com/MrChrisW) ||
> **Publication date:** 2017-05-03
## Introduction
Managing a large number of users in GitLab can become a burden for system administrators. As an organization grows so do user accounts. Keeping these user accounts in sync across multiple enterprise applications often becomes a time consuming task.
In this guide we will focus on configuring GitLab with Active Directory. [Active Directory](https://en.wikipedia.org/wiki/Active_Directory) is a popular LDAP compatible directory service provided by Microsoft, included in all modern Windows Server operating systems.
GitLab has supported LDAP integration since [version 2.2](https://about.gitlab.com/2012/02/22/gitlab-version-2-2/). With GitLab LDAP [group syncing](#group-syncing-ee) being added to GitLab Enterprise Edition in [version 6.0](https://about.gitlab.com/2013/08/20/gitlab-6-dot-0-released/). LDAP integration has become one of the most popular features in GitLab.
## Getting started
### Choosing an LDAP Server
The main reason organizations choose to utilize a LDAP server is to keep the entire organization's user base consolidated into a central repository. Users can access multiple applications and systems across the IT environment using a single login. Because LDAP is an open, vendor-neutral, industry standard application protocol, the number of applications using LDAP authentication continues to increase.
There are many commercial and open source [directory servers](https://en.wikipedia.org/wiki/Directory_service#LDAP_implementations) that support the LDAP protocol. Deciding on the right directory server highly depends on the existing IT environment in which the server will be integrated with.
For example, [Active Directory](https://technet.microsoft.com/en-us/library/hh831484(v=ws.11).aspx) is generally favored in a primarily Windows environment, as this allows quick integration with existing services. Other popular directory services include:
- [Oracle Internet Directory](http://www.oracle.com/technetwork/middleware/id-mgmt/overview/index-082035.html)
- [OpenLDAP](http://www.openldap.org/)
- [389 Directory](http://directory.fedoraproject.org/)
- [OpenDJ](https://forgerock.org/opendj/)
- [ApacheDS](https://directory.apache.org/)
> GitLab uses the [Net::LDAP](https://rubygems.org/gems/net-ldap) library under the hood. This means it supports all [IETF](https://tools.ietf.org/html/rfc2251) compliant LDAPv3 servers.
### Active Directory (AD)
We won't cover the installation and configuration of Windows Server or Active Directory Domain Services in this tutorial. There are a number of resources online to guide you through this process:
- Install Windows Server 2012 - (_technet.microsoft.com_) - [Installing Windows Server 2012 ](https://technet.microsoft.com/en-us/library/jj134246(v=ws.11).aspx)
- Install Active Directory Domain Services (AD DS) (_technet.microsoft.com_)- [Install Active Directory Domain Services](https://technet.microsoft.com/windows-server-docs/identity/ad-ds/deploy/install-active-directory-domain-services--level-100-#BKMK_PS)
> **Shortcut:** You can quickly install AD DS via PowerShell using
`Install-WindowsFeature AD-Domain-Services -IncludeManagementTools`
### Creating an AD **OU** structure
Configuring organizational units (**OU**s) is an important part of setting up Active Directory. **OU**s form the base for an entire organizational structure. Using GitLab as an example we have designed the **OU** structure below using the geographic **OU** model. In the Geographic Model we separate **OU**s for different geographic regions.
| GitLab **OU** Design | GitLab AD Structure |
| :----------------------------: | :------------------------------: |
| ![GitLab OU Design][gitlab_ou] | ![GitLab AD Structure][ldap_ou] |
[gitlab_ou]: img/gitlab_ou.png
[ldap_ou]: img/ldap_ou.gif
Using PowerShell you can output the **OU** structure as a table (_all names are examples only_):
```ps
Get-ADObject -LDAPFilter "(objectClass=*)" -SearchBase 'OU=GitLab INT,DC=GitLab,DC=org' -Properties CanonicalName | Format-Table Name,CanonicalName -A
```
```
OU CanonicalName
---- -------------
GitLab INT GitLab.org/GitLab INT
United States GitLab.org/GitLab INT/United States
Developers GitLab.org/GitLab INT/United States/Developers
Gary Johnson GitLab.org/GitLab INT/United States/Developers/Gary Johnson
Ellis Matthews GitLab.org/GitLab INT/United States/Developers/Ellis Matthews
William Collins GitLab.org/GitLab INT/United States/Developers/William Collins
People Ops GitLab.org/GitLab INT/United States/People Ops
Margaret Baker GitLab.org/GitLab INT/United States/People Ops/Margaret Baker
Libby Hartzler GitLab.org/GitLab INT/United States/People Ops/Libby Hartzler
Victoria Ryles GitLab.org/GitLab INT/United States/People Ops/Victoria Ryles
The Netherlands GitLab.org/GitLab INT/The Netherlands
Developers GitLab.org/GitLab INT/The Netherlands/Developers
John Doe GitLab.org/GitLab INT/The Netherlands/Developers/John Doe
Jon Mealy GitLab.org/GitLab INT/The Netherlands/Developers/Jon Mealy
Jane Weingarten GitLab.org/GitLab INT/The Netherlands/Developers/Jane Weingarten
Production GitLab.org/GitLab INT/The Netherlands/Production
Sarah Konopka GitLab.org/GitLab INT/The Netherlands/Production/Sarah Konopka
Cynthia Bruno GitLab.org/GitLab INT/The Netherlands/Production/Cynthia Bruno
David George GitLab.org/GitLab INT/The Netherlands/Production/David George
United Kingdom GitLab.org/GitLab INT/United Kingdom
Developers GitLab.org/GitLab INT/United Kingdom/Developers
Leroy Fox GitLab.org/GitLab INT/United Kingdom/Developers/Leroy Fox
Christopher Alley GitLab.org/GitLab INT/United Kingdom/Developers/Christopher Alley
Norris Morita GitLab.org/GitLab INT/United Kingdom/Developers/Norris Morita
Support GitLab.org/GitLab INT/United Kingdom/Support
Laura Stanley GitLab.org/GitLab INT/United Kingdom/Support/Laura Stanley
Nikki Schuman GitLab.org/GitLab INT/United Kingdom/Support/Nikki Schuman
Harriet Butcher GitLab.org/GitLab INT/United Kingdom/Support/Harriet Butcher
Global Groups GitLab.org/GitLab INT/Global Groups
DevelopersNL GitLab.org/GitLab INT/Global Groups/DevelopersNL
DevelopersUK GitLab.org/GitLab INT/Global Groups/DevelopersUK
DevelopersUS GitLab.org/GitLab INT/Global Groups/DevelopersUS
ProductionNL GitLab.org/GitLab INT/Global Groups/ProductionNL
SupportUK GitLab.org/GitLab INT/Global Groups/SupportUK
People Ops US GitLab.org/GitLab INT/Global Groups/People Ops US
Global Admins GitLab.org/GitLab INT/Global Groups/Global Admins
```
> See [more information](https://technet.microsoft.com/en-us/library/ff730967.aspx) on searching Active Directory with Windows PowerShell from [The Scripting Guys](https://technet.microsoft.com/en-us/scriptcenter/dd901334.aspx)
## GitLab LDAP configuration
The initial configuration of LDAP in GitLab requires changes to the `gitlab.rb` configuration file. Below is an example of a complete configuration using an Active Directory.
The two Active Directory specific values are `active_directory: true` and `uid: 'sAMAccountName'`. `sAMAccountName` is an attribute returned by Active Directory used for GitLab usernames. See the example output from `ldapsearch` for a full list of attributes a "person" object (user) has in **AD** - [`ldapsearch` example](#using-ldapsearch-unix)
> Both group_base and admin_group configuration options are only available in GitLab Enterprise Edition. See [GitLab EE - LDAP Features](#gitlab-enterprise-edition---ldap-features)
### Example `gitlab.rb` LDAP
```
gitlab_rails['ldap_enabled'] = true
gitlab_rails['ldap_servers'] = {
'main' => {
'label' => 'GitLab AD',
'host' => 'ad.example.org',
'port' => 636,
'uid' => 'sAMAccountName',
'encryption' => 'simple_tls',
'verify_certificates' => true,
'bind_dn' => 'CN=GitLabSRV,CN=Users,DC=GitLab,DC=org',
'password' => 'Password1',
'active_directory' => true,
'base' => 'OU=GitLab INT,DC=GitLab,DC=org',
'group_base' => 'OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=org',
'admin_group' => 'Global Admins'
}
}
```
> **Note:** Remember to run `gitlab-ctl reconfigure` after modifying `gitlab.rb`
## Security improvements (LDAPS)
Security is an important aspect when deploying an LDAP server. By default, LDAP traffic is transmitted unsecured. LDAP can be secured using SSL/TLS called LDAPS, or commonly "LDAP over SSL".
Securing LDAP (enabling LDAPS) on Windows Server 2012 involves installing a valid SSL certificate. For full details see Microsoft's guide [How to enable LDAP over SSL with a third-party certification authority](https://support.microsoft.com/en-us/help/321051/how-to-enable-ldap-over-ssl-with-a-third-party-certification-authority)
> By default a LDAP service listens for connections on TCP and UDP port 389. LDAPS (LDAP over SSL) listens on port 636
### Testing you AD server
#### Using **AdFind** (Windows)
You can use the [`AdFind`](https://social.technet.microsoft.com/wiki/contents/articles/7535.adfind-command-examples.aspx) utility (on Windows based systems) to test that your LDAP server is accessible and authentication is working correctly. This is a freeware utility built by [Joe Richards](http://www.joeware.net/freetools/tools/adfind/index.htm).
**Return all objects**
You can use the filter `objectclass=*` to return all directory objects.
```sh
adfind -h ad.example.org:636 -ssl -u "CN=GitLabSRV,CN=Users,DC=GitLab,DC=org" -up Password1 -b "OU=GitLab INT,DC=GitLab,DC=org" -f (objectClass=*)
```
**Return single object using filter**
You can also retrieve a single object by **specifying** the object name or full **DN**. In this example we specify the object name only `CN=Leroy Fox`.
```sh
adfind -h ad.example.org:636 -ssl -u "CN=GitLabSRV,CN=Users,DC=GitLab,DC=org" -up Password1 -b "OU=GitLab INT,DC=GitLab,DC=org" -f (&(objectcategory=person)(CN=Leroy Fox))”
```
#### Using **ldapsearch** (Unix)
You can use the `ldapsearch` utility (on Unix based systems) to test that your LDAP server is accessible and authentication is working correctly. This utility is included in the [`ldap-utils`](https://wiki.debian.org/LDAP/LDAPUtils) package.
**Return all objects**
You can use the filter `objectclass=*` to return all directory objects.
```sh
ldapsearch -D "CN=GitLabSRV,CN=Users,DC=GitLab,DC=org" \
-w Password1 -p 636 -h ad.example.org \
-b "OU=GitLab INT,DC=GitLab,DC=org" -Z \
-s sub "(objectclass=*)"
```
**Return single object using filter**
You can also retrieve a single object by **specifying** the object name or full **DN**. In this example we specify the object name only `CN=Leroy Fox`.
```sh
ldapsearch -D "CN=GitLabSRV,CN=Users,DC=GitLab,DC=org" -w Password1 -p 389 -h ad.example.org -b "OU=GitLab INT,DC=GitLab,DC=org" -Z -s sub "CN=Leroy Fox"
```
**Full output of `ldapsearch` command:** - Filtering for _CN=Leroy Fox_
```
# LDAPv3
# base <OU=GitLab INT,DC=GitLab,DC=org> with scope subtree
# filter: CN=Leroy Fox
# requesting: ALL
#
# Leroy Fox, Developers, United Kingdom, GitLab INT, GitLab.org
dn: CN=Leroy Fox,OU=Developers,OU=United Kingdom,OU=GitLab INT,DC=GitLab,DC=or
g
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: user
cn: Leroy Fox
sn: Fox
givenName: Leroy
distinguishedName: CN=Leroy Fox,OU=Developers,OU=United Kingdom,OU=GitLab INT,
DC=GitLab,DC=org
instanceType: 4
whenCreated: 20170210030500.0Z
whenChanged: 20170213050128.0Z
displayName: Leroy Fox
uSNCreated: 16790
memberOf: CN=DevelopersUK,OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=org
uSNChanged: 20812
name: Leroy Fox
objectGUID:: rBCAo6NR6E6vfSKgzcUILg==
userAccountControl: 512
badPwdCount: 0
codePage: 0
countryCode: 0
badPasswordTime: 0
lastLogoff: 0
lastLogon: 0
pwdLastSet: 131311695009850084
primaryGroupID: 513
objectSid:: AQUAAAAAAAUVAAAA9GMAb7tdJZvsATf7ZwQAAA==
accountExpires: 9223372036854775807
logonCount: 0
sAMAccountName: Leroyf
sAMAccountType: 805306368
userPrincipalName: Leroyf@GitLab.org
objectCategory: CN=Person,CN=Schema,CN=Configuration,DC=GitLab,DC=org
dSCorePropagationData: 16010101000000.0Z
lastLogonTimestamp: 131314356887754250
# search result
search: 2
result: 0 Success
# numResponses: 2
# numEntries: 1
```
## Basic user authentication
After configuring LDAP, basic authentication will be available. Users can then login using their directory credentials. An extra tab is added to the GitLab login screen for the configured LDAP server (e.g "**GitLab AD**").
![GitLab OU Structure](img/user_auth.gif)
Users that are removed from the LDAP base group (e.g `OU=GitLab INT,DC=GitLab,DC=org`) will be **blocked** in GitLab. [More information](../../administration/auth/ldap.md#security) on LDAP security.
If `allow_username_or_email_login` is enabled in the LDAP configuration, GitLab will ignore everything after the first '@' in the LDAP username used on login. Example: The username `jon.doe@example.com` is converted to `jon.doe` when authenticating with the LDAP server. Disable this setting if you use `userPrincipalName` as the `uid`.
## LDAP extended features on GitLab EE
With [GitLab Enterprise Edition (EE)](https://about.gitlab.com/gitlab-ee/), besides everything we just described, you'll
have extended functionalities with LDAP, such as:
- Group sync
- Group permissions
- Updating user permissions
- Multiple LDAP servers
Read through the article on [LDAP for GitLab EE](../how_to_configure_ldap_gitlab_ee/index.md) for an overview.
doc/articles/how_to_configure_ldap_gitlab_ee/index.md
View file @ 7ae55b64
# How to configure LDAP with GitLab EE This document was moved to [another location](../../administration/auth/how_to_configure_ldap_gitlab_ee/index.md).
> **Type:** admin guide ||
> **Level:** intermediary ||
> **Author:** [Chris Wilson](https://gitlab.com/MrChrisW) ||
> **Publication date:** 2017/05/03
## Introduction
The present article follows [How to Configure LDAP with GitLab CE](../how_to_configure_ldap_gitlab_ce/index.md). Make sure to read through it before moving forward.
## GitLab Enterprise Edition - LDAP features
[GitLab Enterprise Edition (EE)](https://about.gitlab.com/gitlab-ee/) has a number of advantages when it comes to integrating with Active Directory (LDAP):
- [Administrator Sync](#administrator-sync): As an extension of group sync, you can automatically manage your global GitLab administrators. Specify a group CN for `admin_group` and all members of the LDAP group will be given administrator privileges.
- [Group Sync](#group-sync): This allows GitLab group membership to be automatically updated based on LDAP group members.
- [Multiple LDAP servers](#multiple-ldap-servers): The ability to configure multiple LDAP servers. This is useful if an organization has different LDAP servers within departments. This is not designed for failover. We're working on [supporting LDAP failover](https://gitlab.com/gitlab-org/gitlab-ee/issues/139) in GitLab.
- Daily user synchronization: Once a day, GitLab will run a synchronization to check and update GitLab users against LDAP. This process updates all user details automatically.
On the following section, you'll find a description for each of these features. Read through [LDAP GitLab EE docs](../../administration/auth/ldap-ee.md) for complementary information.
![GitLab OU Structure](img/admin_group.png)
All members of the group `Global Admins` will be given **administrator** access to GitLab, allowing them to view the `/admin` dashboard.
### Group Sync
Group syncing allows AD (LDAP) groups to be mapped to GitLab groups. This provides more control over per-group user management. To configure group syncing edit the `group_base` **DN** (`'OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=org'`). This **OU** contains all groups that will be associated with [GitLab groups](../../workflow/groups.md).
#### Creating group links - example
As an example, let's suppose we have a "UKGov" GitLab group, which deals with confidential government information. Therefore, it is important that users of this group are given the correct permissions to projects contained within the group. Granular group permissions can be applied based on the AD group.
**UK Developers** of our "UKGov" group are given **"developer"** permissions.
_The developer permission allows the development staff to effectively manage all project code, issues, and merge requests._
**UK Support** staff of our "UKGov" group are given **"reporter"** permissions.
_The reporter permission allows support staff to manage issues, labels, and review project code._
**US People Ops** of our "UKGov" group are given **"guest"** permissions.
![Creating group links](img/group_linking.gif)
> Guest permissions allows people ops staff to review and lodge new issues while allowing no read or write access to project code or [confidential issues](../../user/project/issues/confidential_issues.md#permissions-and-access-to-confidential-issues) created by other users.
See the [permission list](../../user/permissions.md) for complementary info.
#### Group permissions - example
Considering the previous example, our staff will have
access to our GitLab instance with the following structure:
![GitLab OU Structure](img/group_link_final.png)
Using this permission structure in our example allows only UK staff access to sensitive information stored in the projects code, while still allowing other teams to work effectively. As all permissions are controlled via AD groups new users can be quickly added to existing groups. New group members will then automatically inherit the required permissions.
> [More information](../../administration/auth/ldap-ee.md#group-sync) on group syncing.
### Updating user permissions - new feature
Since GitLab [v8.15](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/822) LDAP user permissions can now be manually overridden by an admin user. To override a user's permissions visit the groups **Members** page and select **Edit permissions**.
![Setting manual permissions](img/manual_permissions.gif)
### Multiple LDAP servers
GitLab EE can support multiple LDAP servers. Simply configure another server in the `gitlab.rb` file within the `ldap_servers` block. In the example below we configure a new secondary server with the label **GitLab Secondary AD**. This is shown on the GitLab login screen. Large enterprises often utilize multiple LDAP servers for segregating organizational departments.
![Multiple LDAP Servers Login](img/multi_login.gif)
Considering the example illustrated on the image above,
our `gitlab.rb` configuration would look like:
```ruby
gitlab_rails['ldap_enabled'] = true
gitlab_rails['ldap_servers'] = {
'main' => {
'label' => 'GitLab AD',
'host' => 'ad.example.org',
'port' => 636,
'uid' => 'sAMAccountName',
'method' => 'ssl',
'bind_dn' => 'CN=GitLabSRV,CN=Users,DC=GitLab,DC=org',
'password' => 'Password1',
'active_directory' => true,
'base' => 'OU=GitLab INT,DC=GitLab,DC=org',
'group_base' => 'OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=org',
'admin_group' => 'Global Admins'
},
'secondary' => {
'label' => 'GitLab Secondary AD',
'host' => 'ad-secondary.example.net',
'port' => 636,
'uid' => 'sAMAccountName',
'method' => 'ssl',
'bind_dn' => 'CN=GitLabSRV,CN=Users,DC=GitLab,DC=com',
'password' => 'Password1',
'active_directory' => true,
'base' => 'OU=GitLab Secondary,DC=GitLab,DC=com',
'group_base' => 'OU=Global Groups,OU=GitLab INT,DC=GitLab,DC=com',
'admin_group' => 'Global Admins'
}
}
```
## Conclusion
Integration of GitLab with Active Directory (LDAP) reduces the complexity of user management.
It has the advantage of improving user permission controls, whilst easing the deployment of GitLab into an existing [IT environment](https://www.techopedia.com/definition/29199/it-infrastructure). GitLab EE offers advanced group management and multiple LDAP servers.
With the assistance of the [GitLab Support](https://about.gitlab.com/support) team, setting up GitLab with an existing AD/LDAP solution will be a smooth and painless process.
doc/articles/index.md
View file @ 7ae55b64
...@@ -10,16 +10,6 @@ They are written by members of the GitLab Team and by ...@@ -10,16 +10,6 @@ They are written by members of the GitLab Team and by
Part of the articles listed below link to the [GitLab Blog](https://about.gitlab.com/blog/), Part of the articles listed below link to the [GitLab Blog](https://about.gitlab.com/blog/),
where they were originally published. where they were originally published.
## Authentication
Explore GitLab's supported [authentications methods](../topics/authentication/index.md):
| Article title | Category | Publishing date |
| :------------ | :------: | --------------: |
| **LDAP** |
| [How to configure LDAP with GitLab CE](how_to_configure_ldap_gitlab_ce/index.md)| Admin guide | 2017-05-03 |
| [How to configure LDAP with GitLab EE](https://docs.gitlab.com/ee/articles/how_to_configure_ldap_gitlab_ee/) | Admin guide | 2017-05-03 |
## Build, test, and deploy with GitLab CI/CD ## Build, test, and deploy with GitLab CI/CD
Build, test, and deploy the software you develop with [GitLab CI/CD](../ci/README.md): Build, test, and deploy the software you develop with [GitLab CI/CD](../ci/README.md):
......
doc/topics/authentication/index.md
View file @ 7ae55b64
...@@ -20,8 +20,8 @@ This page gathers all the resources for the topic **Authentication** within GitL ...@@ -20,8 +20,8 @@ This page gathers all the resources for the topic **Authentication** within GitL
- [LDAP (Enterprise Edition)](https://docs.gitlab.com/ee/administration/auth/ldap-ee.html) - [LDAP (Enterprise Edition)](https://docs.gitlab.com/ee/administration/auth/ldap-ee.html)
- [Enforce Two-factor Authentication (2FA)](../../security/two_factor_authentication.md#enforce-two-factor-authentication-2fa) - [Enforce Two-factor Authentication (2FA)](../../security/two_factor_authentication.md#enforce-two-factor-authentication-2fa)
- **Articles:** - **Articles:**
- [How to Configure LDAP with GitLab CE](../../articles/how_to_configure_ldap_gitlab_ce/index.md) - [How to Configure LDAP with GitLab CE](../../administration/auth/how_to_configure_ldap_gitlab_ce/index.md)
- [How to Configure LDAP with GitLab EE](https://docs.gitlab.com/ee/articles/how_to_configure_ldap_gitlab_ee/) - [How to Configure LDAP with GitLab EE](../../administration/auth/how_to_configure_ldap_gitlab_ee/index.md)
- [Feature Highlight: LDAP Integration](https://about.gitlab.com/2014/07/10/feature-highlight-ldap-sync/) - [Feature Highlight: LDAP Integration](https://about.gitlab.com/2014/07/10/feature-highlight-ldap-sync/)
- [Debugging LDAP](https://about.gitlab.com/handbook/support/workflows/ldap/debugging_ldap.html) - [Debugging LDAP](https://about.gitlab.com/handbook/support/workflows/ldap/debugging_ldap.html)
- **Integrations:** - **Integrations:**
......
doc/user/permissions.md
View file @ 7ae55b64
...@@ -277,7 +277,7 @@ for details about the pipelines security model. ...@@ -277,7 +277,7 @@ for details about the pipelines security model.
## LDAP users permissions ## LDAP users permissions
Since GitLab 8.15, LDAP user permissions can now be manually overridden by an admin user. Since GitLab 8.15, LDAP user permissions can now be manually overridden by an admin user.
Read through the documentation on [LDAP users permissions](https://docs.gitlab.com/ee/articles/how_to_configure_ldap_gitlab_ee/index.html#updating-user-permissions-new-feature) to learn more. Read through the documentation on [LDAP users permissions](../administration/auth/how_to_configure_ldap_gitlab_ee/index.md) to learn more.
## Auditor users permissions (EEP) ## Auditor users permissions (EEP)
......
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