Univention Bugzilla – Bug 45351
Installation from UCS 4.2-2 DVD may fail with internal server error
Last modified: 2019-09-02 09:36:17 CEST
When installing from the UCS 4.2-2 DVD, an error can occur when our system-setup is started: a popup in firefox shows "Interner Server-Fehler: Verbindung zum Modulprozess konnte nicht aufgebaut werden; Connection to module process failed" I created two VMs for testing, and in one the error occured, the other started system-setup normally
Installed from UCS_4.2-2-amd64.iso md5 799a1fc7943df8a45d8ca757449e414e Pressing F5 reloads system setup and everything is working umc-module-setup.log only has 08.09.17 09:44:58.983 DEBUG_INIT umc-web-server.log: 08.09.17 09:44:21.090 DEBUG_INIT 08.09.17 09:44:21.095 MAIN ( PROCESS ) : Starting UMC web server ... 08.09.17 09:44:52.406 MAIN ( PROCESS ) : SessionClient(0x7f39e59b4710): _authenticated: success=True status=200 message=None 08.09.17 09:45:08.676 MAIN ( PROCESS ) : CPCommand (::1:53702) response status code: 511 08.09.17 09:45:08.676 MAIN ( PROCESS ) : CPCommand (::1:53702) response message: Connection to module process failed 08.09.17 09:45:08.676 MAIN ( PROCESS ) : CPCommand (::1:53702) response result: None umc-server.log: 08.09.17 09:44:18.532 DEBUG_INIT 08.09.17 09:44:18.532 MAIN ( PROCESS ) : Starting UMC server ... 08.09.17 09:44:21.007 MAIN ( PROCESS ) : Server started 08.09.17 09:44:50.364 LOCALE ( WARN ) : Could not find translation file: 'umc-core.mo' 08.09.17 09:44:58.613 MAIN ( PROCESS ) : running: ['/usr/sbin/univention-management-console-module', '-m', 'setup', '-s', '/var/run/univention-management-console/21483-1504856698613.socket', '-d', '2', '-l', 'de_DE.UTF-8'] 08.09.17 09:44:58.712 LOCALE ( WARN ) : Could not find translation file: 'umc-core.mo' 08.09.17 09:44:58.713 LOCALE ( WARN ) : Could not find translation file: 'umc-core.mo' 08.09.17 09:45:08.676 MAIN ( PROCESS ) : ModuleProcess: dying 08.09.17 09:45:08.676 MAIN ( PROCESS ) : ModuleProcess: child stopped 08.09.17 09:45:20.310 MAIN ( PROCESS ) : Connection timed out. 08.09.17 09:45:37.793 MAIN ( PROCESS ) : Connection timed out. 08.09.17 09:45:37.793 MAIN ( PROCESS ) : Processor: dying univention-management-console-server 9.0.80-65A~4.2.0.201709041248 univention-management-console-module-setup 10.0.10-40A~4.2.0.201709041622
Created attachment 9184 [details] syslog
There is a strange time change in the syslog visible: Sep 8 09:44:51 python2.7: PAM unable to dlopen(pam_ldap.so): /lib/security/pam_ldap.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden Sep 8 09:44:51 python2.7: PAM adding faulty module: pam_ldap.so Sep 8 09:44:51 python2.7: PAM unable to dlopen(pam_cracklib.so): /lib/security/pam_cracklib.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden Sep 8 09:44:51 python2.7: PAM adding faulty module: pam_cracklib.so Sep 8 09:44:51 python2.7: PAM unable to dlopen(pam_krb5.so): /lib/security/pam_krb5.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden Sep 8 09:44:51 python2.7: PAM adding faulty module: pam_krb5.so Sep 8 08:20:09 main-menu[344]: (process:11426): Sep 8 08:20:09 main-menu[344]: (process:11426): Sep 8 08:20:09 main-menu[344]: (process:11426): > 08.09.17 09:45:08.676 MAIN ( PROCESS ) : CPCommand (::1:53702) response status code: 511 > 08.09.17 09:45:08.676 MAIN ( PROCESS ) : CPCommand (::1:53702) response message: Connection to module process failed This happens if the module initialization (and connection to the UNIX socket of it) takes more than 10 seconds.
Created attachment 9185 [details] more debug output might help?
Unable to reproduce the issue with different installation scenarios: * high system load (cpu, io) on host system * installing in VM without network * installing in VM with only 768MiB RAM * installing on hardware (xen5)
Was initially reported here: https://help.univention.com/t/6753
Had same error with installing Hyper-V VM with the 4.2.2 ISO. Startet from ISO a 2nd time installation went fine.
Does it happen with UCS 4.2-3 or UCS 4.3-0?
Currently there are no known problems with the DVD. UCS 4.2 is out of maintenance. If this error occurs again with a current UCS version, please clone this bug.