We may get the following error while upgrading the plesk to 11.5
Trying to add group 'psacln'... groupadd: group 'psacln' already exists
ERROR while trying to add group 'psacln'
Check the error reason(see log file: /tmp/plesk_11.5.30_installation.log), fix and try again
When view the /etc/group file we could see duplicate entry for 'psacln' user
~# cat /etc/group | grep psacln
psacln:x:505:apache
psacln:x:2524:apache
Remove the second user and restart Plesk upgrade. For removing the group:
1. Backup file /etc/group:
~# cp /etc/group /etc/group.bak
2. Open the file in file editor with the "vigr" command:
~# vim
3. Find the second records for group psacln and remove it:
psacln:x:2524:apache
4. Save the file.
