Parallels

Symptoms

If you run the updater tool from the Plesk CP it returns the error:

     Warning: Error: Can't create directory //psa/.

However it works fine from the command line.

Cause

When you run updater tool from the Plesk CP, it gets 'root' privileges by means of 'wrapper' utility that has 'SUID' bit set. If updater gets the permission error, most probably it was not able to get 'root' privileges due to 'SUID' bit absence.

Resolution

Make sure that $PRODUCT_ROOT_D/admin/sbin/wrapper binary has right permissions as listed below:

  If not, you should correct it with the command:

Also make sure that /usr/local/psa/admin/bin/autoinstaller is a symlink to /usr/local/psa/admin/sbin/wrapper :