Followed the upgrade instructions with the 2.2.2 documentation, had no errors. The site is working fine and I made sure any third party plugins were updated and had no warnings about compatability with 2.2.2. Every time I go to the admin panel and login it takes me back to the admin panel. Server is CentOS 6 running php 5.3. I had an issue previous before the upgrade and added these into the config.php:
$config[‘admin_session_type’] = “c”;
$config[‘require_ip_for_login’] = “n”;
$config[‘secure_forms’] = “n”;
Previous to the upgrade this made the admin panel functional. I have also tried disabling the third party plugins but am still unable to login. I also enabled logging as verbose as possible and see no errors in the output. The previous version before upgrading was 2.1.3.