Plesk error: SWKeyExFatalError Cannot open file

Sometimes a Plesk upgrade may result in an “SWKeyExFatalError: Cannot open file” error while accessing the Plesk panel. The error message looks like

ERROR: SWKeyExFatalError
error: Cannot open file
0: common_func.php3:4537
of_get_key_by_product(string ‘plesk-unix’)
1: common_func.php3:4537
2: common_func.php3:4616
getKeyProp(string ‘demo’)
3: auth.php3:48

The SWKeyExFatalError error occurs when ownership of files/directories in /etc/sw/keys are incorrect.
The files and directories in /etc/sw/keys/ should be owned by psaadm:swkey-data except registry.xml.

# ls -la /etc/sw/keys
 drwxrws--- 2 psaadm swkey-data 4096 Mar 25 04:02 backup
 -rw-r--r-- 1 psaadm swkey-data 22 May 18 2010 info
 drwxrws--- 2 psaadm swkey-data 4096 Sep 15 2011 instances
 drwxrws--- 2 psaadm swkey-data 4096 Mar 25 04:02 keys
 drwxrws--- 2 psaadm swkey-data 4096 Sep 15 2011 lock
 -rw-rw---- 1 root swkey-data 7431 Apr 8 04:02 registry.xml
 drwxrws--- 2 psaadm swkey-data 4096 Sep 15 2011 restart

If the ownership of the files is not what you see above, correct them as follows:

# chown psaadm:swkey-data /etc/sw/keys -R
# chown root:swkey-data registry.xml

Next, restart the Plesk service and Plesk control panel should work.

# service psa restart

However, if the user ‘psaadm’ is not in the ‘swkey-data’ group, it is possible that the ownership of the files get reverted on restarting the Plesk service.

# id psaadm
 uid=501(psaadm) gid=501(psaadm) groups=501(psaadm),2522(psaserv)

As you can see above, the user psaadm is not in the group of swkey-data. You can also verify it as follows:

# grep swkey-data /etc/group

In such a case, edit the /etc/group file and add the psaadm user in swkey-data group. The line should look like follows:


Save the file and verify the new settings

# id psaadm
uid=501(psaadm) gid=501(psaadm) groups=501(psaadm),502(swkey-data),

Restart the Plesk service and the Plesk panel will work without problems.

This entry was posted on Sunday, April 8th, 2012 and is filed under Plesk Management. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

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