Plesk GUI is inaccessible with error 504 gateway timeout (nginx)
Plesk upgrade/update stuck at this stage for a long time:
===> Plesk database scheme upgrade has been completed
===> Cumulative upgrade of Plesk (final stage) has been completed.
ps auxf utility output it is possible to find this string or something similar that is not changing for a long time:
\_ /usr/bin/sw-engine -c /usr/local/psa/admin/conf/php.ini /usr/local/psa/admin/plib/Upgrade/upgrade.php
After killing this process, upgrade can be continued or it hangs again.
It may be not possible to login to Plesk - login page is blank.
Running Plesk autoinstaller again may result in halt at this place:
gpg-pubkey-c105b9de-4e0fd3a3 gpg(CentOS-6 Key (CentOS 6 Official Signing Key) <c gpg-pubkey-914bdf7e-55c05220 gpg(Plesk Team <email@example.com>)
Ign http://autoinstall.plesk.com all/all Translation-en Ign http://autoinstall.plesk.com trusty/all Translation-en Fetched 221 kB in 3s (57.1 kB/s) Reading package lists... ERROR: Interrupted by user Reading package lists...
plesk repair installation and other Plesk related commands may also stuck.
This is a software issue with internal ID PPPM-3717. The fix will be included in further Plesk updates.
As workaround, remove
lock_manager temporary files:
# rm -f /usr/local/psa/var/cache/SharedLockManagerStorage*
# service sw-engine restart && service sw-cp-server restart
Run Plesk installer and continue upgrade. Execute
plesk repair installation if it is required.