debian-mirror-gitlab/doc/administration/auth/google_secure_ldap.md

type
reference

Google Secure LDAP (CORE ONLY)

Introduced in GitLab 11.9.

Google Cloud Identity provides a Secure LDAP service that can be configured with GitLab for authentication and group sync.

Secure LDAP requires a slightly different configuration than standard LDAP servers. The steps below cover:

• Configuring the Secure LDAP Client in the Google Admin console.
• Required GitLab configuration.

Configuring Google LDAP client

1. Navigate to https://admin.google.com/Dashboard and sign in as a GSuite domain administrator.

2. Go to Apps > LDAP > Add Client.

3. Provide an LDAP client name and an optional Description. Any descriptive values are acceptable. For example, the name could be 'GitLab' and the description could be 'GitLab LDAP Client'. Click the Continue button.

   

4. Set Access Permission according to your needs. You must choose either 'Entire domain (GitLab)' or 'Selected organizational units' for both 'Verify user credentials' and 'Read user information'. Select 'Add LDAP Client'

   TIP: Tip: If you plan to use GitLab LDAP Group Sync , turn on 'Read group information'.

   

5. Download the generated certificate. This is required for GitLab to communicate with the Google Secure LDAP service. Save the downloaded certificates for later use. After downloading, click the Continue to Client Details button.

6. Expand the Service Status section and turn the LDAP client 'ON for everyone'. After selecting 'Save', click on the 'Service Status' bar again to collapse and return to the rest of the settings.

7. Expand the Authentication section and choose 'Generate New Credentials'. Copy/note these credentials for later use. After selecting 'Close', click on the 'Authentication' bar again to collapse and return to the rest of the settings.

Now the Google Secure LDAP Client configuration is finished. The screenshot below shows an example of the final settings. Continue on to configure GitLab.

Configuring GitLab

Edit GitLab configuration, inserting the access credentials and certificate obtained earlier.

The following are the configuration keys that need to be modified using the values obtained during the LDAP client configuration earlier:

• bind_dn: The access credentials username
• password: The access credentials password
• cert: The .crt file text from the downloaded certificate bundle
• key: The .key file text from the downloaded certificate bundle

For Omnibus installations

1. Edit /etc/gitlab/gitlab.rb:

   gitlab_rails['ldap_enabled'] = true
   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: 'Google Secure LDAP'
   
       host: 'ldap.google.com'
       port: 636
       uid: 'uid'
       bind_dn: 'DizzyHorse'
       password: 'd6V5H8nhMUW9AuDP25abXeLd'
       encryption: 'simple_tls'
       verify_certificates: true
   
       tls_options:
         cert: |
           -----BEGIN CERTIFICATE-----
           MIIDbDCCAlSgAwIBAgIGAWlzxiIfMA0GCSqGSIb3DQEBCwUAMHcxFDASBgNVBAoTC0dvb2dsZSBJ
           bmMuMRYwFAYDVQQHEw1Nb3VudGFpbiBWaWV3MRQwEgYDVQQDEwtMREFQIENsaWVudDEPMA0GA1UE
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           EwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB
           ALOTy4aC38dyjESk6N8fRsKk8DN23ZX/GaNFL5OUmmA1KWzrvVC881OzNdtGm3vNOIxr9clteEG/
           tQwsmsJvQT5U+GkBt+tGKF/zm7zueHUYqTP7Pg5pxAnAei90qkIRFi17ulObyRHPYv1BbCt8pxNB
           4fG/gAXkFbCNxwh1eiQXXRTfruasCZ4/mHfX7MVm8JmWU9uAVIOLW+DSWOFhrDQduJdGBXJOyC2r
           Gqoeg9+tkBmNH/jjxpnEkFW8q7io9DdOUqqNgoidA1h9vpKTs3084sy2DOgUvKN9uXWx14uxIyYU
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           P6bzklKz7kXbzAD4GggksAzxsEE64OWHC+Y64Tkxq2NiZTw/76POkcg9StiIXjG0ZcebHub9+Ux/
           rTncip92nDuvgEM7lbPFKRIS/YMhLCk09B/U0F6XLsf1yYjyf5miUTDikPkov23b/YGfpc8kh6hq
           1kqdi6a1cYPP34eAhtRhMqcZU9qezpJF6s9EeN/3YFfKzLODFSsVToBRAdZgGHzj//SAtLyQTD4n
           KCSvK1UmaMxNaZyTHg8JnMf0ZuRpv26iSg==
           -----END CERTIFICATE-----
   
         key: |
           -----BEGIN PRIVATE KEY-----
           MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCzk8uGgt/HcoxEpOjfH0bCpPAz
           dt2V/xmjRS+TlJpgNSls671QvPNTszXbRpt7zTiMa/XJbXhBv7UMLJrCb0E+VPhpAbfrRihf85u8
           7nh1GKkz+z4OacQJwHovdKpCERYte7pTm8kRz2L9QWwrfKcTQeHxv4AF5BWwjccIdXokF10U367m
           rAmeP5h31+zFZvCZllPbgFSDi1vg0ljhYaw0HbiXRgVyTsgtqxqqHoPfrZAZjR/448aZxJBVvKu4
           qPQ3TlKqjYKInQNYfb6Sk7N9POLMtgzoFLyjfbl1sdeLsSMmFGNQ5w8tMHM3LLkbe5fhILQhIKbC
           4iyUGylviUtVAgMBAAECggEAIPb0CQy0RJoX+q/lGbRVmnyJpYDf+115WNnl+mrwjdGkeZyqw4v0
           BPzkWYzUFP1esJRO6buBNFybQRFdFW0z5lvVv/zzRKq71aVUBPInxaMRyHuJ8D5lIL8nDtgVOwyE
           7DOGyDtURUMzMjdUwoTe7K+O6QBU4X/1pVPZYgmissYSMmt68LiP8k0p601F4+r5xOi/QEy44aVp
           aOJZBUOisKB8BmUXZqmQ4Cy05vU9Xi1rLyzkn9s7fxnZ+JO6Sd1r0Thm1mE0yuPgxkDBh/b4f3/2
           GsQNKKKCiij/6TfkjnBi8ZvWR44LnKpu760g/K7psVNrKwqJG6C/8RAcgISWQQKBgQDop7BaKGhK
           1QMJJ/vnlyYFTucfGLn6bM//pzTys5Gop0tpcfX/Hf6a6Dd+zBhmC3tBmhr80XOX/PiyAIbc0lOI
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           7ViJcydItQKBgQDFmK0H0IA6W4opGQo+zQKhefooqZ+RDk9IIZMPOAtnvOM7y3rSVrfsSjzYVuMS
           w/RP/vs7rwhaZejnCZ8/7uIqwg4sdUBRzZYR3PRNFeheW+BPZvb+2keRCGzOs7xkbF1mu54qtYTa
           HZGZj1OsD83AoMwVLcdLDgO1kw32dkS8IQKBgFRdgoifAHqqVah7VFB9se7Y1tyi5cXWsXI+Wufr
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           +lLMq2YABw+PeJUnqdYE38xsZVHoDjBsVjFGRmbDybeQxauYT7PACy3FAoGBAK2+k9bdNQMbXp7I
           j8OszHVkJdz/WXlY1cmdDAxDwXOUGVKIlxTAf7TbiijILZ5gg0Cb+hj+zR9/oI0WXtr+mAv02jWp
           W8cSOLS4TnBBpTLjIpdu+BwbnvYeLF6MmEjNKEufCXKQbaLEgTQ/XNlchBSuzwSIXkbWqdhM1+gx
           EjtBAoGARAdMIiDMPWIIZg3nNnFebbmtBP0qiBsYohQZ+6i/8s/vautEHBEN6Q0brIU/goo+nTHc
           t9VaOkzjCmAJSLPUanuBC8pdYgLu5J20NXUZLD9AE/2bBT3OpezKcdYeI2jqoc1qlWHlNtVtdqQ2
           AcZSFJQjdg5BTyvdEDhaYUKGdRw=
           -----END PRIVATE KEY-----
   EOS
   

2. Save the file and reconfigure GitLab for the changes to take effect.

---

For installations from source

1. Edit config/gitlab.yml:

   ldap:
     enabled: true
     servers:
       main: # 'main' is the GitLab 'provider ID' of this LDAP server
         label: 'Google Secure LDAP'
   
         host: 'ldap.google.com'
         port: 636
         uid: 'uid'
         bind_dn: 'DizzyHorse'
         password: 'd6V5H8nhMUW9AuDP25abXeLd'
         encryption: 'simple_tls'
         verify_certificates: true
   
         tls_options:
           cert: |
             -----BEGIN CERTIFICATE-----
             MIIDbDCCAlSgAwIBAgIGAWlzxiIfMA0GCSqGSIb3DQEBCwUAMHcxFDASBgNVBAoTC0dvb2dsZSBJ
             bmMuMRYwFAYDVQQHEw1Nb3VudGFpbiBWaWV3MRQwEgYDVQQDEwtMREFQIENsaWVudDEPMA0GA1UE
             CxMGR1N1aXRlMQswCQYDVQQGEwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTAeFw0xOTAzMTIyMTE5
             MThaFw0yMjAzMTEyMTE5MThaMHcxFDASBgNVBAoTC0dvb2dsZSBJbmMuMRYwFAYDVQQHEw1Nb3Vu
             dGFpbiBWaWV3MRQwEgYDVQQDEwtMREFQIENsaWVudDEPMA0GA1UECxMGR1N1aXRlMQswCQYDVQQG
             EwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB
             ALOTy4aC38dyjESk6N8fRsKk8DN23ZX/GaNFL5OUmmA1KWzrvVC881OzNdtGm3vNOIxr9clteEG/
             tQwsmsJvQT5U+GkBt+tGKF/zm7zueHUYqTP7Pg5pxAnAei90qkIRFi17ulObyRHPYv1BbCt8pxNB
             4fG/gAXkFbCNxwh1eiQXXRTfruasCZ4/mHfX7MVm8JmWU9uAVIOLW+DSWOFhrDQduJdGBXJOyC2r
             Gqoeg9+tkBmNH/jjxpnEkFW8q7io9DdOUqqNgoidA1h9vpKTs3084sy2DOgUvKN9uXWx14uxIyYU
             Y1DnDy0wczcsuRt7l+EgtCEgpsLiLJQbKW+JS1UCAwEAATANBgkqhkiG9w0BAQsFAAOCAQEAf60J
             yazhbHkDKIH2gFxfm7QLhhnqsmafvl4WP7JqZt0u0KdnvbDPfokdkM87yfbKJU1MTI86M36wEC+1
             P6bzklKz7kXbzAD4GggksAzxsEE64OWHC+Y64Tkxq2NiZTw/76POkcg9StiIXjG0ZcebHub9+Ux/
             rTncip92nDuvgEM7lbPFKRIS/YMhLCk09B/U0F6XLsf1yYjyf5miUTDikPkov23b/YGfpc8kh6hq
             1kqdi6a1cYPP34eAhtRhMqcZU9qezpJF6s9EeN/3YFfKzLODFSsVToBRAdZgGHzj//SAtLyQTD4n
             KCSvK1UmaMxNaZyTHg8JnMf0ZuRpv26iSg==
             -----END CERTIFICATE-----          
   
           key: |
             -----BEGIN PRIVATE KEY-----
             MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCzk8uGgt/HcoxEpOjfH0bCpPAz
             dt2V/xmjRS+TlJpgNSls671QvPNTszXbRpt7zTiMa/XJbXhBv7UMLJrCb0E+VPhpAbfrRihf85u8
             7nh1GKkz+z4OacQJwHovdKpCERYte7pTm8kRz2L9QWwrfKcTQeHxv4AF5BWwjccIdXokF10U367m
             rAmeP5h31+zFZvCZllPbgFSDi1vg0ljhYaw0HbiXRgVyTsgtqxqqHoPfrZAZjR/448aZxJBVvKu4
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             4iyUGylviUtVAgMBAAECggEAIPb0CQy0RJoX+q/lGbRVmnyJpYDf+115WNnl+mrwjdGkeZyqw4v0
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             AcZSFJQjdg5BTyvdEDhaYUKGdRw=
             -----END PRIVATE KEY-----          
   

2. Save the file and restart GitLab for the changes to take effect.