Lost connection to LDAP server

[nikaro]

Steps to reproduce

1. Have a working LDAP backend configuration on 11.0.1
2. Upgrade to 11.0.2
3. Try to connect or reconfigure LDAP settings

Expected behaviour

I should be able to use the LDAP backend.

Actual behaviour

Internal error if i try to connect with a LDAP user.
If i try to reconfigure LDAP settings i get "Lost connection to LDAP server" error.

Server configuration

Operating system: Ubuntu 16.04

Web server: Apache 2.4

Database: MariaDB

PHP version: 7.0

Nextcloud version: 11.0.2

Updated from an older Nextcloud/ownCloud or fresh install: fresh install

Where did you install Nextcloud from: Nextcloud downloaded archive

List of activated apps:

App list

Enabled:
  - activity: 2.4.1
  - announcementcenter: 3.0.0
  - bookmarks: 0.9.1
  - calendar: 1.5.0
  - comments: 1.1.0
  - contacts: 1.5.3
  - dav: 1.1.1
  - external: true
  - federatedfilesharing: 1.1.1
  - federation: 1.1.1
  - files: 1.6.1
  - files_markdown: 1.0.1
  - files_pdfviewer: 1.0.1
  - files_sharing: 1.1.1
  - files_texteditor: 2.2
  - files_trashbin: 1.1.0
  - files_versions: 1.4.0
  - files_videoplayer: 1.0.0
  - firstrunwizard: 2.0
  - keeweb: 0.3.0
  - logreader: 2.0.0
  - lookup_server_connector: 1.0.0
  - news: 10.1.0
  - notifications: 1.0.1
  - provisioning_api: 1.1.0
  - rainloop: 4.26.1
  - serverinfo: 1.1.1
  - sharebymail: 1.0.1
  - survey_client: 0.1.5
  - systemtags: 1.1.3
  - tasks: 0.9.4
  - theming: 1.1.1
  - twofactor_backupcodes: 1.0.0
  - updatenotification: 1.1.1
  - user_ldap: 1.1.2
  - workflowengine: 1.1.1
Disabled:
  - admin_audit
  - encryption
  - files_accesscontrol
  - files_automatedtagging
  - files_external
  - files_retention
  - gallery
  - nextcloud_announcements
  - password_policy
  - spreed
  - templateeditor
  - user_external
  - user_saml

The content of config/config.php:

Config report

{
    "system": {
        "instanceid": "oc28jm16gcpf",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "apps.ltpsn.org"
        ],
        "datadirectory": "\/srv\/nextcloud\/data",
        "overwrite.cli.url": "https:\/\/apps.ltpsn.org",
        "dbtype": "mysql",
        "version": "11.0.2.7",
        "dbname": "nextcloud",
        "dbhost": "localhost",
        "dbport": "",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "logtimezone": "UTC",
        "installed": true,
        "ldapIgnoreNamingRules": false,
        "ldapProviderFactory": "\\OCA\\User_LDAP\\LDAPProviderFactory",
        "maintenance": false,
        "updater.secret": "***REMOVED SENSITIVE VALUE***",
        "loglevel": 2
    }
}

Are you using external storage, if yes which one: no

Are you using encryption: no

Are you using an external user-backend, if yes which one: LDAP

LDAP configuration (delete this part if not used)

LDAP config

+-------------------------------+------------------------------------------------------------+
| Configuration                 |                                                            |
+-------------------------------+------------------------------------------------------------+
| hasMemberOfFilterSupport      |                                                            |
| hasPagedResultSupport         |                                                            |
| homeFolderNamingRule          |                                                            |
| lastJpegPhotoLookup           | 0                                                          |
| ldapAgentName                 |                                                            |
| ldapAgentPassword             | ***                                                        |
| ldapAttributesForGroupSearch  |                                                            |
| ldapAttributesForUserSearch   |                                                            |
| ldapBackupHost                |                                                            |
| ldapBackupPort                |                                                            |
| ldapBase                      | dc=ltpsn,dc=org                                            |
| ldapBaseGroups                | dc=ltpsn,dc=org                                            |
| ldapBaseUsers                 | dc=ltpsn,dc=org                                            |
| ldapCacheTTL                  | 600                                                        |
| ldapConfigurationActive       | 1                                                          |
| ldapDynamicGroupMemberURL     |                                                            |
| ldapEmailAttribute            | mail                                                       |
| ldapExperiencedAdmin          | 0                                                          |
| ldapExpertUUIDGroupAttr       |                                                            |
| ldapExpertUUIDUserAttr        |                                                            |
| ldapExpertUsernameAttr        |                                                            |
| ldapGroupDisplayName          | cn                                                         |
| ldapGroupFilter               | (&(|(objectclass=groupOfNames)))                           |
| ldapGroupFilterGroups         |                                                            |
| ldapGroupFilterMode           | 0                                                          |
| ldapGroupFilterObjectclass    | groupOfNames                                               |
| ldapGroupMemberAssocAttr      | member                                                     |
| ldapHost                      | directory.ltpsn.org                                        |
| ldapIgnoreNamingRules         |                                                            |
| ldapLoginFilter               | (&(|(objectclass=inetOrgPerson))(|(uid=%uid)(|(sn=%uid)))) |
| ldapLoginFilterAttributes     | sn                                                         |
| ldapLoginFilterEmail          | 0                                                          |
| ldapLoginFilterMode           | 0                                                          |
| ldapLoginFilterUsername       | 1                                                          |
| ldapNestedGroups              | 0                                                          |
| ldapOverrideMainServer        |                                                            |
| ldapPagingSize                | 500                                                        |
| ldapPort                      | 389                                                        |
| ldapQuotaAttribute            |                                                            |
| ldapQuotaDefault              |                                                            |
| ldapTLS                       | 0                                                          |
| ldapUserDisplayName           | displayname                                                |
| ldapUserDisplayName2          |                                                            |
| ldapUserFilter                | (|(objectclass=inetOrgPerson))                             |
| ldapUserFilterGroups          |                                                            |
| ldapUserFilterMode            | 0                                                          |
| ldapUserFilterObjectclass     | inetOrgPerson                                              |
| ldapUuidGroupAttribute        | auto                                                       |
| ldapUuidUserAttribute         | auto                                                       |
| turnOffCertCheck              | 0                                                          |
| turnOnPasswordChange          | 0                                                          |
| useMemberOfToDetectMembership | 1                                                          |
+-------------------------------+------------------------------------------------------------+

Client configuration

Browser: Firefox

Operating system: Ubuntu 16.04

Logs

Web server error log

Web server error log

no error

Nextcloud log (data/nextcloud.log)

Nextcloud log

no error

[MorrisJobke]

Looks like the connection to your LDAP server is not stable. Sadly we can't do much here, right @blizzz

[blizzz]

@MorrisJobke ack

[blizzz]

There are also no relevant changes between 11.0.1 and 11.0.2.

[nikaro]

@MorrisJobke may be… It was blocking for me, so i migrated to "classic" database users provisioned through the API. Since nobody seems to be affected by the same issue than me, and that i can not anymore provide feedback on it, i think we can close it.

I see that @blizzz just did it. Thank you guys.