Roundcube Webmail setup for memcache session storage

[kacanski]

Tried to setup in different ways memcache but nothing works

Roundcube Webmail 0.8-svn [SVN r5959]

$rcmail_config['session_storage'] = 'memcache';

// Use these hosts for accessing memcached
// Define any number of hosts in the form hostname:port
//$rcmail_config['memcache_hosts'] = 'localhost:11211'; // e.g. array( 'localhost:11211', '192.168.1.12:11211' );
$rcmail_config['memcache_hosts'] = array('localhost:11211');

memcached -d -l localhost -p 11211 -u memcached -m 64 -c 1024 -P /var/run/memcached/memcached.pid


telnet localhost 11211
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.

[06-Mar-2012 16:55:51 -0500]: DB Error: Failed to connect to memcached. Please check configuration in /var/www/rcube/program/include/rcube_ses
sion.php on line 82 (GET /rcube/?_task=mail&_action=check-recent&_mbox=INBOX&_list=1&_remote=1&_unlock=0&_=1331070951740)



code :

66     // use memcache backend
 67     if ($config->get('session_storage', 'db') == 'memcache') {
 68       $this->memcache = rcmail::get_instance()->get_memcache();
 69 
 70       // set custom functions for PHP session management if memcache is available
 71       if ($this->memcache) {
 72         session_set_save_handler(
 73           array($this, 'open'),
 74           array($this, 'close'),
 75           array($this, 'mc_read'),
 76           array($this, 'mc_write'),
 77           array($this, 'mc_destroy'),
 78           array($this, 'gc'));
 79       }
 80       else {
 81         raise_error(array('code' => 604, 'type' => 'db',
 82           'line' => __LINE__, 'file' => __FILE__,
 83           'message' => "Failed to connect to memcached. Please check configuration"),
 84           true, true);
 85       }

thanks --sasha

[thomasb]

Works for me. Do you have the Memcache extension for PHP installed? Use ​http://code.google.com/p/phpmemcacheadmin/ to test the PHP connection to memcache outside of Roundcube.

[alec]

No feedback.

[sthen]

I recently tried to configure Roundcube to use Memcache session storage and hit this problem and tracked down one cause; some versions of the Memcache extension (e.g. 3.0.4) are buggy (issuing "delete <key> 1" which is incorrect syntax, at least for Memcached 1.4.13). This gives exactly this problem when used for session storage (though it does work OK for imap caching).

Since upgrading the Memcache extension to 3.0.6 memcache sessions are now working fine.

[bobleponge]

Even with the last extension (3.0.6) in beta, and last release candidate of RC (0.8-rc), this still happens.

[thomasb]

Replying to bobleponge:

Even with the last extension (3.0.6) in beta, and last release candidate of RC (0.8-rc), this still happens.

What exactly "still happens"? That you can't connect to memcache at all? That definitely works if PHP is properly configured and isn't a Roundcube issue.

[alec]

Works for me too, php5-memcache-3.0.6-1, memcached-1.4.13-0ubuntu2.