session -> access denied

[Svein Hansen]

This may be a kohana bug. Occurs now and then.

An error was detected which prevented the loading of this page. If this problem persists, please contact the website administrator.

>system/libraries/Session.php [160]:

session_start() [function.session-start]: ps_files_cleanup_dir: opendir(/var/lib/php5) failed: Permission denied (13)
Stack Trace
>system/libraries/Session.php [160]:
session_start( )
>system/libraries/Session.php [66]:
Session_Core->create( )
>system/libraries/Session.php [38]:
Session_Core->__construct( )
>application/controllers/satega.php [15]:
Session_Core::instance( )
>application/controllers/musicserver.php [7]:
Satega_Controller->__construct( )
MusicServer_Controller->__construct( )
>system/core/Kohana.php [269]:
ReflectionClass->newInstance( )
Kohana::instance( )
>system/core/Event.php [209]:
call_user_func( Array
(
    [0] => Kohana
    [1] => instance
)
 )
>system/core/Bootstrap.php [55]:
Event::run( system.execute )
>index.php [122]:
require( system/core/Bootstrap.php )

[bernhard (bernhardredl)]

as i mentioned in the forum. A possible solution is:

sudo chown www-data /var/lib/php5

[bernhard (bernhardredl)]

maybe we should take care of this in our install script?

[bernhard (bernhardredl)]

according to :
http://forum.kohanaphp.com/comments.php?DiscussionID=565

Frustratingly, if you do receive this error, you'll only get it once every hundred page loads on average. Which points to the cause of the problem: automatic session garbage collection. In Debian and Ubuntu, /var/lib/php5, where the session data is stored, has permissions of drwx-wx-wt and should only be cleaned by a cron script.

OFFICIAL solution:
To prevent this error, you should switch off garbage collection in session config and let debian/ubuntu cron job clean up the session files.
$config['gc_probability'] = 0;

[bernhard (bernhardredl)]

Rev 72 trunk

[Philipp Kempgen (philipp-kempgen)]

Similar to
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=256831

[Philipp Kempgen (philipp-kempgen)]

In gemeinschaft-amooma:
session_start(): ps_files_cleanup_dir: opendir(/var/lib/php5) failed: Permission denied (13) in htdocs/gui/srv/queuestatus.php on line 112

[Clint Byrum (clint-fewbar)]

With the default permissions on /var/lib/php5, and the default configs (session.gc_probablity=0), you should not see this error. If an application is generating its own .ini settings, then it will have this issue, and it should be changed to disable gc_probability, and ensure that the cron job is cleaning up after it.

Marking Invalid in php5.