No users can login, even non LDAP users. In nextcloud.log and via OCC, I repeatedly get a Lost connection to LDAP server message. Browser login attempts result in Internal server error. This happens with LDAP and non-LDAP users.
I’ve confirmed the ldap server (AD) is functional and other applications are using it. My next step was going to be delete-config via OCC (Using the occ command — Nextcloud latest Administration Manual latest documentation) but the fact that I can’t login with any user (including a non-LDAP user that I set up specifically in case LDAP failed) suggests that maybe this is not the problem?
Nextcloud version (eg, 20.0.5): 22.1.0.1
Operating system and version (eg, Ubuntu 20.04): 20.04.6
Apache or nginx version (eg, Apache 2.4.25): 2.4.57
PHP version (eg, 7.4): 7.4.33
The issue you are facing:
No users can login, even non LDAP users. In nextcloud.log and via OCC, I repeatedly get a Lost connection to LDAP server message. Browser login attempts result in Internal server error (and resulting error in nextcloud.log). This happens with LDAP and non-LDAP users.
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
- Try to login with any user
The output of your Nextcloud log in Admin > Logging:
{"reqId":"q0F4ss8QxQlBeO44kQfS","level":3,"time":"2023-06-07T22:37:41+00:00","remoteAddr":"172.70.207.116","user":"--","app":"index","method":"POST","url":"/login","message":"Lost connection to LDAP server.","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/113.0","version":"24.0.9.2","exception":{"Exception":"OC\\ServerNotAvailableException","Message":"Lost connection to LDAP server.","Code":0,"Trace":[{"file":"/var/www/nextcloud/apps/user_ldap/lib/LDAP.php","line":407,"function":"processLDAPError","class":"OCA\\User_LDAP\\LDAP","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/LDAP.php","line":308,"function":"postFunctionCall","class":"OCA\\User_LDAP\\LDAP","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/LDAP.php","line":69,"function":"invokeLDAPMethod","class":"OCA\\User_LDAP\\LDAP","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Connection.php","line":689,"function":"bind","class":"OCA\\User_LDAP\\LDAP","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Connection.php","line":603,"function":"bind","class":"OCA\\User_LDAP\\Connection","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Connection.php","line":228,"function":"establishConnection","class":"OCA\\User_LDAP\\Connection","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Connection.php","line":236,"function":"init","class":"OCA\\User_LDAP\\Connection","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Access.php","line":1105,"function":"getConnectionResource","class":"OCA\\User_LDAP\\Connection","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Access.php","line":1285,"function":"executeSearch","class":"OCA\\User_LDAP\\Access","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Access.php","line":972,"function":"search","class":"OCA\\User_LDAP\\Access","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Access.php","line":871,"function":"searchUsers","class":"OCA\\User_LDAP\\Access","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Access.php","line":851,"function":"fetchListOfUsers","class":"OCA\\User_LDAP\\Access","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/User_LDAP.php","line":163,"function":"fetchUsersByLoginName","class":"OCA\\User_LDAP\\Access","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/User_LDAP.php","line":126,"function":"getLDAPUserByLoginName","class":"OCA\\User_LDAP\\User_LDAP","type":"->"},{"function":"loginName2UserName","class":"OCA\\User_LDAP\\User_LDAP","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/apps/user_ldap/lib/User_Proxy.php","line":108,"function":"call_user_func_array"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Proxy.php","line":155,"function":"walkBackends","class":"OCA\\User_LDAP\\User_Proxy","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/User_Proxy.php","line":268,"function":"handleRequest","class":"OCA\\User_LDAP\\Proxy","type":"->"},{"file":"/var/www/nextcloud/apps/user_ldap/lib/Helper.php","line":287,"function":"loginName2UserName","class":"OCA\\User_LDAP\\User_Proxy","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/lib/private/legacy/OC_Hook.php","line":106,"function":"loginName2UserName","class":"OCA\\User_LDAP\\Helper","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/lib/public/Util.php","line":415,"function":"emit","class":"OC_Hook","type":"::"},{"file":"/var/www/nextcloud/apps/password_policy/lib/ComplianceService.php","line":92,"function":"emitHook","class":"OCP\\Util","type":"::"},{"file":"/var/www/nextcloud/apps/password_policy/lib/Listener/BeforeUserLoggedInEventListener.php","line":45,"function":"entryControl","class":"OCA\\Password_Policy\\ComplianceService","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/ServiceEventListener.php","line":87,"function":"handle","class":"OCA\\Password_Policy\\Listener\\BeforeUserLoggedInEventListener","type":"->"},{"file":"/var/www/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php","line":251,"function":"__invoke","class":"OC\\EventDispatcher\\ServiceEventListener","type":"->"},{"file":"/var/www/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php","line":73,"function":"callListeners","class":"Symfony\\Component\\EventDispatcher\\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/EventDispatcher.php","line":88,"function":"dispatch","class":"Symfony\\Component\\EventDispatcher\\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/EventDispatcher.php","line":100,"function":"dispatch","class":"OC\\EventDispatcher\\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Server.php","line":608,"function":"dispatchTyped","class":"OC\\EventDispatcher\\EventDispatcher","type":"->"},{"function":"OC\\{closure}","class":"OC\\Server","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/lib/private/Hooks/EmitterTrait.php","line":106,"function":"call_user_func_array"},{"file":"/var/www/nextcloud/lib/private/Hooks/PublicEmitter.php","line":40,"function":"emit","class":"OC\\Hooks\\BasicEmitter","type":"->"},{"file":"/var/www/nextcloud/lib/private/Authentication/Login/PreLoginHookCommand.php","line":48,"function":"emit","class":"OC\\Hooks\\PublicEmitter","type":"->"},{"file":"/var/www/nextcloud/lib/private/Authentication/Login/Chain.php","line":108,"function":"process","class":"OC\\Authentication\\Login\\PreLoginHookCommand","type":"->"},{"file":"/var/www/nextcloud/core/Controller/LoginController.php","line":329,"function":"process","class":"OC\\Authentication\\Login\\Chain","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":225,"function":"tryLogin","class":"OC\\Core\\Controller\\LoginController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":133,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/App.php","line":172,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":298,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/var/www/nextcloud/lib/base.php","line":1030,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/var/www/nextcloud/index.php","line":36,"function":"handleRequest","class":"OC","type":"::"}],"File":"/var/www/nextcloud/apps/user_ldap/lib/LDAP.php","Line":368,"CustomMessage":"--"}}
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
$CONFIG = array (
'instanceid' => '',
'passwordsalt' => '',
'secret' => '',
'trusted_domains' =>
array (
0 => 'localhost',
1 => '',
2 => '',
),
'overwrite.cli.url' => '',
'htaccess.RewriteBase' => '/',
'datadirectory' => '/nextclouddata',
'dbtype' => 'mysql',
'version' => '24.0.9.2',
'dbname' => '',
'dbhost' => 'localhost:3306',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => '',
'dbpassword' => '',
'installed' => true,
'mail_smtpmode' => 'smtp',
'mail_smtpsecure' => 'tls',
'mail_sendmailmode' => 'smtp',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpauth' => 1,
'mail_from_address' => 'notifications',
'mail_domain' => '',
'mail_smtphost' => 'email-smtp.us-west-2.amazonaws.com',
'mail_smtpport' => '587',
'mail_smtpname' => '',
'mail_smtppassword' => '',
'twofactor_enforced' => 'false',
'twofactor_enforced_groups' =>
array (
),
'twofactor_enforced_excluded_groups' =>
array (
),
'maintenance' => false,
'updater.release.channel' => 'stable',
'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
'default_phone_region' => 'US',
'memcache.local' => '\\OC\\Memcache\\APCu',
'theme' => '',
'loglevel' => 0,
'allow_local_remote_servers' => true,
);
The output of your Apache/nginx/system log in /var/log/____:
Thu Jun 08 00:00:02.247834 2023] [mpm_prefork:notice] [pid 889] AH00163: Apache/2.4.57 (Ubuntu) OpenSSL/1.1.1f configured -- resuming normal operations
[Thu Jun 08 00:00:02.247854 2023] [core:notice] [pid 889] AH00094: Command line: '/usr/sbin/apache2'
[Thu Jun 08 19:40:08.240616 2023] [mpm_prefork:notice] [pid 889] AH00170: caught SIGWINCH, shutting down gracefully
[Thu Jun 08 19:40:08.374196 2023] [mpm_prefork:notice] [pid 7682] AH00163: Apache/2.4.57 (Ubuntu) OpenSSL/1.1.1f configured -- resuming normal operations
[Thu Jun 08 19:40:08.374233 2023] [core:notice] [pid 7682] AH00094: Command line: '/usr/sbin/apache2'
[Thu Jun 08 19:41:35.514307 2023] [mpm_prefork:notice] [pid 7682] AH00170: caught SIGWINCH, shutting down gracefully
[Thu Jun 08 19:41:50.855349 2023] [mpm_prefork:notice] [pid 915] AH00163: Apache/2.4.57 (Ubuntu) OpenSSL/1.1.1f configured -- resuming normal operations
[Thu Jun 08 19:41:50.864148 2023] [core:notice] [pid 915] AH00094: Command line: '/usr/sbin/apache2'