Commit 755cd9b6 authored by Achilleas Pipinellis's avatar Achilleas Pipinellis

Merge branch 'docs/ldap' into 'master'

Refactor LDAP docs

See merge request gitlab-org/gitlab-ce!15814
parents 38912b52 83460922
[//]: # (Do *NOT* modify this file in EE documentation. All changes in this)
[//]: # (file should happen in CE, too. If the change is EE-specific, put)
[//]: # (it in `ldap-ee.md`.)
# LDAP # LDAP
GitLab integrates with LDAP to support user authentication. GitLab integrates with LDAP to support user authentication.
This integration works with most LDAP-compliant directory This integration works with most LDAP-compliant directory
servers, including Microsoft Active Directory, Apple Open Directory, Open LDAP, servers, including Microsoft Active Directory, Apple Open Directory, Open LDAP,
and 389 Server. GitLab EE includes enhanced integration, including group and 389 Server. GitLab Enterprise Editions include enhanced integration,
membership syncing. including group membership syncing as well as multiple LDAP servers support.
## GitLab EE
The information on this page is relevant for both GitLab CE and EE. For more
details about EE-specific LDAP features, see the
[LDAP Enterprise Edition documentation](https://docs.gitlab.com/ee/administration/auth/ldap-ee.html).
## Security ## Security
...@@ -27,8 +37,10 @@ are already logged in or are using Git over SSH will still be able to access ...@@ -27,8 +37,10 @@ are already logged in or are using Git over SSH will still be able to access
GitLab for up to one hour. Manually block the user in the GitLab Admin area to GitLab for up to one hour. Manually block the user in the GitLab Admin area to
immediately block all access. immediately block all access.
>**Note**: GitLab EE supports a configurable sync time, with a default NOTE: **Note**:
of one hour. GitLab Enterprise Edition Starter supports a
[configurable sync time](https://docs.gitlab.com/ee/administration/auth/ldap-ee.html#adjusting-ldap-user-and-group-sync-schedules),
with a default of one hour.
## Git password authentication ## Git password authentication
...@@ -38,19 +50,21 @@ in the application settings. ...@@ -38,19 +50,21 @@ in the application settings.
## Configuration ## Configuration
NOTE: **Note**:
In GitLab Enterprise Edition Starter, you can configure multiple LDAP servers
to connect to one GitLab server.
For a complete guide on configuring LDAP with GitLab Community Edition, please check 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). the admin guide [How to configure LDAP with GitLab CE](how_to_configure_ldap_gitlab_ce/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` for Omnibus
GitLab and installations from source respectively.
There is a Rake task to check LDAP configuration. After configuring LDAP There is a Rake task to check LDAP configuration. After configuring LDAP
using the documentation below, see [LDAP check Rake task](../raketasks/check.md#ldap-check) using the documentation below, see [LDAP check Rake task](../raketasks/check.md#ldap-check)
for information on the LDAP check Rake task. for information on the LDAP check Rake task.
>**Note**: In GitLab EE, you can configure multiple LDAP servers to connect to
one GitLab server.
Prior to version 7.4, GitLab used a different syntax for configuring Prior to version 7.4, GitLab used a different syntax for configuring
LDAP integration. The old LDAP integration syntax still works but may be LDAP integration. The old LDAP integration syntax still works but may be
removed in a future version. If your `gitlab.rb` or `gitlab.yml` file contains removed in a future version. If your `gitlab.rb` or `gitlab.yml` file contains
...@@ -61,156 +75,199 @@ The configuration inside `gitlab_rails['ldap_servers']` below is sensitive to ...@@ -61,156 +75,199 @@ The configuration inside `gitlab_rails['ldap_servers']` below is sensitive to
incorrect indentation. Be sure to retain the indentation given in the example. incorrect indentation. Be sure to retain the indentation given in the example.
Copy/paste can sometimes cause problems. Copy/paste can sometimes cause problems.
NOTE: **Note:**
The `encryption` value `ssl` corresponds to 'Simple TLS' in the LDAP
library. `tls` corresponds to StartTLS, not to be confused with regular TLS.
Normally, if you specify `ssl` it will be on port 636, while `tls` (StartTLS)
would be on port 389. `plain` also operates on port 389.
**Omnibus configuration** **Omnibus configuration**
```ruby ```ruby
gitlab_rails['ldap_enabled'] = true gitlab_rails['ldap_enabled'] = true
gitlab_rails['ldap_servers'] = YAML.load <<-EOS # remember to close this block with 'EOS' below gitlab_rails['ldap_servers'] = YAML.load <<-EOS # remember to close this block with 'EOS' below
main: # 'main' is the GitLab 'provider ID' of this LDAP server ##
## label ## 'main' is the GitLab 'provider ID' of this LDAP server
# ##
# A human-friendly name for your LDAP server. It is OK to change the label later, main:
# for instance if you find out it is too large to fit on the web page. ##
# ## A human-friendly name for your LDAP server. It is OK to change the label later,
# Example: 'Paris' or 'Acme, Ltd.' ## for instance if you find out it is too large to fit on the web page.
##
## Example: 'Paris' or 'Acme, Ltd.'
##
label: 'LDAP' label: 'LDAP'
# Example: 'ldap.mydomain.com' ##
## Example: 'ldap.mydomain.com'
##
host: '_your_ldap_server' host: '_your_ldap_server'
# This port is an example, it is sometimes different but it is always an integer and not a string
##
## This port is an example, it is sometimes different but it is always an
## integer and not a string.
##
port: 389 # usually 636 for SSL port: 389 # usually 636 for SSL
uid: 'sAMAccountName' # This should be the attribute, not the value that maps to uid. uid: 'sAMAccountName' # This should be the attribute, not the value that maps to uid.
# Examples: 'america\\momo' or 'CN=Gitlab Git,CN=Users,DC=mydomain,DC=com' ##
## Examples: 'america\\momo' or 'CN=Gitlab Git,CN=Users,DC=mydomain,DC=com'
##
bind_dn: '_the_full_dn_of_the_user_you_will_bind_with' bind_dn: '_the_full_dn_of_the_user_you_will_bind_with'
password: '_the_password_of_the_bind_user' password: '_the_password_of_the_bind_user'
# Encryption method. The "method" key is deprecated in favor of ##
# "encryption". ## Encryption method. The "method" key is deprecated in favor of
# ## "encryption".
# Examples: "start_tls" or "simple_tls" or "plain" ##
# ## Examples: "start_tls" or "simple_tls" or "plain"
# Deprecated values: "tls" was replaced with "start_tls" and "ssl" was ##
# replaced with "simple_tls". ## Deprecated values: "tls" was replaced with "start_tls" and "ssl" was
# ## replaced with "simple_tls".
##
##
encryption: 'plain' encryption: 'plain'
# Enables SSL certificate verification if encryption method is ##
# "start_tls" or "simple_tls". Defaults to true since GitLab 10.0 for ## Enables SSL certificate verification if encryption method is
# security. This may break installations upon upgrade to 10.0, that did ## "start_tls" or "simple_tls". Defaults to true since GitLab 10.0 for
# not know their LDAP SSL certificates were not setup properly. For ## security. This may break installations upon upgrade to 10.0, that did
# example, when using self-signed certificates, the ca_file path may ## not know their LDAP SSL certificates were not setup properly.
# need to be specified. ##
verify_certificates: true verify_certificates: true
# Specifies the path to a file containing a PEM-format CA certificate, ##
# e.g. if you need to use an internal CA. ## Specifies the SSL version for OpenSSL to use, if the OpenSSL default
# ## is not appropriate.
# Example: '/etc/ca.pem' ##
# ## Example: 'TLSv1_1'
ca_file: '' ##
##
# Specifies the SSL version for OpenSSL to use, if the OpenSSL default
# is not appropriate.
#
# Example: 'TLSv1_1'
#
ssl_version: '' ssl_version: ''
# Set a timeout, in seconds, for LDAP queries. This helps avoid blocking ##
# a request if the LDAP server becomes unresponsive. ## Set a timeout, in seconds, for LDAP queries. This helps avoid blocking
# A value of 0 means there is no timeout. ## a request if the LDAP server becomes unresponsive.
## A value of 0 means there is no timeout.
##
timeout: 10 timeout: 10
# This setting specifies if LDAP server is Active Directory LDAP server. ##
# For non AD servers it skips the AD specific queries. ## This setting specifies if LDAP server is Active Directory LDAP server.
# If your LDAP server is not AD, set this to false. ## For non AD servers it skips the AD specific queries.
## If your LDAP server is not AD, set this to false.
##
active_directory: true active_directory: true
# If allow_username_or_email_login is enabled, GitLab will ignore everything ##
# after the first '@' in the LDAP username submitted by the user on login. ## If allow_username_or_email_login is enabled, GitLab will ignore everything
# ## after the first '@' in the LDAP username submitted by the user on login.
# Example: ##
# - the user enters 'jane.doe@example.com' and 'p@ssw0rd' as LDAP credentials; ## Example:
# - GitLab queries the LDAP server with 'jane.doe' and 'p@ssw0rd'. ## - the user enters 'jane.doe@example.com' and 'p@ssw0rd' as LDAP credentials;
# ## - GitLab queries the LDAP server with 'jane.doe' and 'p@ssw0rd'.
# If you are using "uid: 'userPrincipalName'" on ActiveDirectory you need to ##
# disable this setting, because the userPrincipalName contains an '@'. ## If you are using "uid: 'userPrincipalName'" on ActiveDirectory you need to
## disable this setting, because the userPrincipalName contains an '@'.
##
allow_username_or_email_login: false allow_username_or_email_login: false
# To maintain tight control over the number of active users on your GitLab installation, ##
# enable this setting to keep new users blocked until they have been cleared by the admin ## To maintain tight control over the number of active users on your GitLab installation,
# (default: false). ## enable this setting to keep new users blocked until they have been cleared by the admin
## (default: false).
##
block_auto_created_users: false block_auto_created_users: false
# Base where we can search for users ##
# ## Base where we can search for users
# Ex. 'ou=People,dc=gitlab,dc=example' or 'DC=mydomain,DC=com' ##
# ## Ex. 'ou=People,dc=gitlab,dc=example' or 'DC=mydomain,DC=com'
##
##
base: '' base: ''
# Filter LDAP users ##
# ## Filter LDAP users
# Format: RFC 4515 https://tools.ietf.org/search/rfc4515 ##
# Ex. (employeeType=developer) ## Format: RFC 4515 https://tools.ietf.org/search/rfc4515
# ## Ex. (employeeType=developer)
# Note: GitLab does not support omniauth-ldap's custom filter syntax. ##
# ## Note: GitLab does not support omniauth-ldap's custom filter syntax.
# Example for getting only specific users: ##
# '(&(objectclass=user)(|(samaccountname=momo)(samaccountname=toto)))' ## Example for getting only specific users:
# ## '(&(objectclass=user)(|(samaccountname=momo)(samaccountname=toto)))'
##
user_filter: '' user_filter: ''
# LDAP attributes that GitLab will use to create an account for the LDAP user. ##
# The specified attribute can either be the attribute name as a string (e.g. 'mail'), ## LDAP attributes that GitLab will use to create an account for the LDAP user.
# or an array of attribute names to try in order (e.g. ['mail', 'email']). ## The specified attribute can either be the attribute name as a string (e.g. 'mail'),
# Note that the user's LDAP login will always be the attribute specified as `uid` above. ## or an array of attribute names to try in order (e.g. ['mail', 'email']).
## Note that the user's LDAP login will always be the attribute specified as `uid` above.
##
attributes: attributes:
# The username will be used in paths for the user's own projects ##
# (like `gitlab.example.com/username/project`) and when mentioning ## The username will be used in paths for the user's own projects
# them in issues, merge request and comments (like `@username`). ## (like `gitlab.example.com/username/project`) and when mentioning
# If the attribute specified for `username` contains an email address, ## them in issues, merge request and comments (like `@username`).
# the GitLab username will be the part of the email address before the '@'. ## If the attribute specified for `username` contains an email address,
## the GitLab username will be the part of the email address before the '@'.
##
username: ['uid', 'userid', 'sAMAccountName'] username: ['uid', 'userid', 'sAMAccountName']
email: ['mail', 'email', 'userPrincipalName'] email: ['mail', 'email', 'userPrincipalName']
# If no full name could be found at the attribute specified for `name`, ##
# the full name is determined using the attributes specified for ## If no full name could be found at the attribute specified for `name`,
# `first_name` and `last_name`. ## the full name is determined using the attributes specified for
## `first_name` and `last_name`.
##
name: 'cn' name: 'cn'
first_name: 'givenName' first_name: 'givenName'
last_name: 'sn' last_name: 'sn'
# If lowercase_usernames is enabled, GitLab will lower case the username. ##
## If lowercase_usernames is enabled, GitLab will lower case the username.
##
lowercase_usernames: false lowercase_usernames: false
##
## EE only ## EE only
##
# Base where we can search for groups ## Base where we can search for groups
# ##
# Ex. ou=groups,dc=gitlab,dc=example ## Ex. ou=groups,dc=gitlab,dc=example
# ##
group_base: '' group_base: ''
# The CN of a group containing GitLab administrators ## The CN of a group containing GitLab administrators
# ##
# Ex. administrators ## Ex. administrators
# ##
# Note: Not `cn=administrators` or the full DN ## Note: Not `cn=administrators` or the full DN
# ##
admin_group: '' admin_group: ''
# The LDAP attribute containing a user's public SSH key ## An array of CNs of groups containing users that should be considered external
# ##
# Ex. ssh_public_key ## Ex. ['interns', 'contractors']
# ##
## Note: Not `cn=interns` or the full DN
##
external_groups: []
##
## The LDAP attribute containing a user's public SSH key
##
## Example: sshPublicKey
##
sync_ssh_keys: false sync_ssh_keys: false
# GitLab EE only: add more LDAP servers ## GitLab EE only: add more LDAP servers
# Choose an ID made of a-z and 0-9 . This ID will be stored in the database ## Choose an ID made of a-z and 0-9 . This ID will be stored in the database
# so that GitLab can remember which LDAP server a user belongs to. ## so that GitLab can remember which LDAP server a user belongs to.
# uswest2: #uswest2:
# label: # label:
# host: # host:
# .... # ....
...@@ -222,21 +279,23 @@ EOS ...@@ -222,21 +279,23 @@ EOS
Use the same format as `gitlab_rails['ldap_servers']` for the contents under Use the same format as `gitlab_rails['ldap_servers']` for the contents under
`servers:` in the example below: `servers:` in the example below:
``` ```yaml
production: production:
# snip... # snip...
ldap: ldap:
enabled: false enabled: false
servers: servers:
main: # 'main' is the GitLab 'provider ID' of this LDAP server ##
## label ## 'main' is the GitLab 'provider ID' of this LDAP server
# ##
# A human-friendly name for your LDAP server. It is OK to change the label later, main:
# for instance if you find out it is too large to fit on the web page. ##
# ## A human-friendly name for your LDAP server. It is OK to change the label later,
# Example: 'Paris' or 'Acme, Ltd.' ## for instance if you find out it is too large to fit on the web page.
##
## Example: 'Paris' or 'Acme, Ltd.'
label: 'LDAP' label: 'LDAP'
# snip... ## snip...
``` ```
## Using an LDAP filter to limit access to your GitLab server ## Using an LDAP filter to limit access to your GitLab server
...@@ -283,6 +342,24 @@ nested members in the user filter should not be confused with ...@@ -283,6 +342,24 @@ nested members in the user filter should not be confused with
Please note that GitLab does not support the custom filter syntax used by Please note that GitLab does not support the custom filter syntax used by
omniauth-ldap. omniauth-ldap.
### Escaping special characters
If the `user_filter` DN contains special characters. For example, a comma:
```
OU=GitLab, Inc,DC=gitlab,DC=com
```
This character needs to be escaped as documented in [RFC 4515](https://tools.ietf.org/search/rfc4515).
Due to the way the string is parsed, the special character needs to be converted
to hex and `\\5C\\` (`5C` = `\` in hex) added before it.
As an example the above DN would look like
```
OU=GitLab\\5C\\2C Inc,DC=gitlab,DC=com
```
## Enabling LDAP sign-in for existing GitLab users ## Enabling LDAP sign-in for existing GitLab users
When a user signs in to GitLab with LDAP for the first time, and their LDAP When a user signs in to GitLab with LDAP for the first time, and their LDAP
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