I am trying to integrate ldap and gitlab (11.7.5) but the error keeps coming up: Error: could not authenticate you from ldapmain due to invalid credientials

Unable to figure what could be the possible issue!

Setting in /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: 'Gitlab LDAP' host: '' port: 389 uid: 'krbtgt' encryption: 'plain' bind_dn: 'CN=,OU=Service IDs,DC=<--->,DC=COM' password: '' smartcard_auth: false active_directory: true allow_username_or_email_login: true lowercase_usernames: true block_auto_created_users: false base: '' user_filter: '' ## EE only group_base: '' admin_group: '' sync_ssh_keys: false attributes: username: ['uid', 'userid', 'sAMAccountName'] email: ['mail', 'email', 'userPrincipalName']

root@falgitlab:/var/log/gitlab# gitlab-rake gitlab:check

Checking GitLab subtasks ...

Checking GitLab Shell ...

GitLab Shell: ... GitLab Shell version >= 8.4.4 ? ... OK (8.4.4) Running /opt/gitlab/embedded/service/gitlab-shell/bin/check Check GitLab API access: OK Redis available via internal API: OK

Access to /var/opt/gitlab/.ssh/authorized_keys: OK gitlab-shell self-check successful

Checking GitLab Shell ... Finished

Checking Gitaly ...

Gitaly: ... default ... OK

Checking Gitaly ... Finished

Checking Sidekiq ...

Sidekiq: ... Running? ... yes Number of Sidekiq processes ... 1

Checking Sidekiq ... Finished

Checking Incoming Email ...

Incoming Email: ... Reply by email is disabled in config/gitlab.yml

Checking Incoming Email ... Finished

Checking LDAP ...

LDAP: ... Server: ldapmain LDAP authentication... Success LDAP users with access to your GitLab server (only showing the first 100 results)

Checking LDAP ... Finished

Checking GitLab App ...

Git configured correctly? ... yes Database config exists? ... yes All migrations up? ... yes Database contains orphaned GroupMembers? ... no GitLab config exists? ... yes GitLab config up to date? ... yes Log directory writable? ... yes Tmp directory writable? ... yes Uploads directory exists? ... yes Uploads directory has correct permissions? ... yes Uploads directory tmp has correct permissions? ... skipped (no tmp uploads folder yet) Init script exists? ... skipped (omnibus-gitlab has no init script) Init script up-to-date? ... skipped (omnibus-gitlab has no init script) Projects have namespace: ... can't check, you have no projects Redis version >= 2.8.0? ... yes Ruby version >= 2.3.5 ? ... yes (2.5.3) Git version >= 2.18.0 ? ... yes (2.18.1) Git user has default SSH configuration? ... yes Active users: ... 1 Elasticsearch version 5.6 - 6.x? ... skipped (elasticsearch is disabled)

Checking GitLab App ... Finished

Checking GitLab subtasks ... Finished

root@falgitlab:/var/log/gitlab# gitlab-rake gitlab:env:info

System information System: Ubuntu 16.04 Proxy: no Current User: git Using RVM: no Ruby Version: 2.5.3p105 Gem Version: 2.7.6 Bundler Version:1.16.6 Rake Version: 12.3.2 Redis Version: 3.2.12 Git Version: 2.18.1 Sidekiq Version:5.2.3 Go Version: unknown

GitLab information Version: 11.7.5-ee Revision: ed04633 Directory: /opt/gitlab/embedded/service/gitlab-rails DB Adapter: postgresql DB Version: 9.6.11 URL: http://gitlab.<---filtered---->.com HTTP Clone URL: http://gitlab.<---filtered--->.com/some-group/some-project.git SSH Clone URL: git@gitlab.<---filtered---->.com:some-group/some-project.git Elasticsearch: no Geo: no Using LDAP: yes Using Omniauth: yes Omniauth Providers:

GitLab Shell Version: 8.4.4 Repository storage paths: - default: /var/opt/gitlab/git-data/repositories Hooks: /opt/gitlab/embedded/service/gitlab-shell/hooks Git: /opt/gitlab/embedded/bin/git

logs in /var/log/gitlab/gitlab-rails/production.log

Started POST "/users/auth/ldapmain/callback" for at 2019-02-26 12:22:31 +0530 Processing by OmniauthCallbacksController#failure as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "username"=>"himanshu.mathur", "password"=>"[FILTERED]"} Redirected to Completed 302 Found in 8ms (ActiveRecord: 0.8ms | Elasticsearch: 0.0ms) Started GET "/users/sign_in" for at 2019-02-26 12:22:31 +0530 Processing by SessionsController#new as HTML Completed 200 OK in 354ms (Views: 294.1ms | ActiveRecord: 6.4ms | Elasticsearch: 0.0ms) Started GET "/-/metrics" for at 2019-02-26 12:22:41 +0530

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