Problem Description
You may receive an error like:
[warn] mod_fcgid: stderr: PHP Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php/session) in Unknown on line 0
This means that PHP cannot write to the session folder.
Problem Resolution
There are a few permissions adjustments that could be made to fix this, however the following is optimal:
chmod 733 /var/lib/php/session
chmod +t /var/lib/php/session
+t sets the sticky bit for the directory such that “when the sticky bit is set, only the item’s owner, the directory’s owner, or the superuser can rename or delete files”.
