Resolved After reboot server Plesk Admin gives 502 Bad Gateway

[Andreas Schliack]

Hi there,
Server Debian 6 with Plesk 12 works perfect until 22.august ...
Since this day he wont do backups ...

So today i restarted the Server.
Now i got 502 Bad Gateway nginx ...

After some search i found this while psa restart :
...
Starting apache service... already started
Starting superserver service... already started
Starting sw_engine service... invoke-rc.d: initscript sw-engine, action "status" failed. done

So i tried
/etc/init.d/sw-engine restart

This is the result :
Restarting Plesk engine pool manager: sw-engine-fpm[-] Error 0x7a911401 in attaching to process!
failed!

After some searches with google an so on ... nothing to resolve the Problem ...

So i will do e repair install ... i use :
plesk installer --select-release-current --reinstall-patch --upgrade-installed-components

Result :
Installierte Produktkomponenten werden ermittelt.
Es werden Informationen zum installierten Lizenzkey abgerufen...
Komponentenprüfungen werden gestartet...
Datei wird heruntergeladen PSA_12.5.30/examiners/panel_preupgrade_checker.php: 11%..23%..37%..48%..53%..62%..76%..80%..91%..100% fertig.
Datei wird heruntergeladen PSA_12.5.30/examiners/php_launcher.sh: 100% fertig.
Auflösung der Paketabhängigkeiten wird geprüft.
E: Version '12.5.30-debian6.0.1371.16082315' for 'plesk-skins' was not found
---X--- `apt-get` output ---------------------
Reading package lists...
Building dependency tree...
Reading state information...
---------------------- `apt-get` output ---X---
Fehlerdetails werden in die Protokolldatei geschrieben...
ERROR: Installation wird nicht fortgesetzt
Die Ausführung von apg-get ist mit folgender Meldung fehlgeschlagen:
Reading package lists...
Building dependency tree...
Reading state information...
Es wurden nicht alle Pakete installiert.
Bitte kontaktieren Sie den technischen Produktsupport.
exit status 1

.......................
i dont know what to do ....

Any Ideas ?

Regards
Andreas

 

[Andreas Schliack]

remark :
Websites works all perfekt ... Problem is only the admin-Interface on port 8443

 

[IgorG]

What about

# plesk repair installation

?

 

[Andreas Schliack]

Hi Igor,
this is the result :

[-] Error 0x7a911401 in attaching to process!
Child process return code 255
exit status 1

Cheers
Andreas

 

[IgorG]

Error 0x7a911401 in attaching to process

https://kb.plesk.com/en/129639

 

[Andreas Schliack]

thats a new entry ....

but why ??
Theres nothing wrong and changed on this Mashine ... i cant make a backup cause plesk is not running ... theres no new Kernel ... comes this with a update of plesk ?

OK .. i can order a new host but how i transfer the data to a newer one without a actual backup ?

Do you know anyone who transfer the data to a new mashine and after that all is working ?
Last pleskbackup is from 21.8.

Cheers
Andreas

 

[mattd29]

thats a new entry ....

but why ??
Theres nothing wrong and changed on this Mashine ... i cant make a backup cause plesk is not running ... theres no new Kernel ... comes this with a update of plesk ?

OK .. i can order a new host but how i transfer the data to a newer one without a actual backup ?

Do you know anyone who transfer the data to a new mashine and after that all is working ?
Last pleskbackup is from 21.8.

Cheers
Andreas

Plesk has a migration plugin you can use to move data ?

 

[Andreas Schliack]

Hi Mattd29
i know that, but Works the migrationtool without a working plesk ?

Cheers Andreas

 

[mattd29]

Hi Mattd29
i know that, but Works the migrationtool without a working plesk ?

Cheers Andreas

Try it, so long as the Plesk Panel works you should be able to perform the task from that module.

 

[Andreas Schliack]

THATs the Problem .... the pleskpanel isnt working .... see above .... :-(

Cheers
Andreas

 

[mattd29]

It sounds to me like there is a config issue between Apache and NGINX have any of the vhost files been changed since reboot ? one thing to try would be to update all the OS modules etc and perhaps remove and re add the NGINX add on from the installer URL if that works

 

[Andreas Schliack]

If you read all above you will see more ...

i cant start the sw-engine .... that is the main problem ... and with this where is a problem with a ptrace funktion ...
i tried the KB from igorg but there are a lot of problems with the old debian 6 and missing librarys .... so i dont want to work on the system while the websites and mails are working and i cant make a backup of the plesk system ...

 

[Andreas Schliack]

Now it is clear ... migration does not work without a working plesk ...
i tried to migrate one domain .... this is the result :

[2016-09-02 15:38:24][ERROR] Failed to fetch configuration data from Plesk servers
Cause: Command execution failed on the source server 'source' (www.schliack.de) with non-zero exit code.
command: cd /tmp/panel_migrator/pmm_agent; tar rf migration_dump.tar backup_info*
exit code: 2
stdout:
stderr: tar: backup_info*: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors

That is a critical error, migration was stopped.

I Need a specialist who makes this running !!!!!

 

[mattd29]

Now it is clear ... migration does not work with working plesk ...
i tried to migrate one domain .... this is the result :

[2016-09-02 15:38:24][ERROR] Failed to fetch configuration data from Plesk servers
Cause: Command execution failed on the source server 'source' (www.schliack.de) with non-zero exit code.
command: cd /tmp/panel_migrator/pmm_agent; tar rf migration_dump.tar backup_info*
exit code: 2
stdout:
stderr: tar: backup_info*: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors

That is a critical error, migration was stopped.

I Need a specialist who makes this running !!!!!

I'd run a repair on Plesk if you haven't already

plesk repair fs -verbose
plesk repair web -verbose

 

[Andreas Schliack]

Again.... these tips comes from IgorG and they dont work ... see above !!

[-] Error 0x7a911401 in attaching to process!
Child process return code 255
exit status 1

i wont be unfriendly but sometimes it helps to read the complete thread !

Cheers Andreas

 

[Andreas Schliack]

Ok ... there is no Easy Way to get the Plesk running ...
i will try to recover to a new Server from older Backup and copy the Missing data from the Old server

Thanks for your Help !!!

CHeers
Andreas