ZendOptimizer.so: cannot restore segment prot after reloc: Permission denied
On a server after ZendOptimizer installation, Zend is not working, php -v shows following error.
# php -v Failed loading /usr/local/Zend/lib/Optimizer-3.3.0/php-5.1.x/ZendOptimizer.so: /usr/local/Zend/lib/Optimizer-3.3.0/php-5.1.x/ZendOptimizer.so: cannot restore segment prot after reloc: Permission denied PHP 5.1.6 (cli) (built: Dec 19 2006 11:18:44) Copyright (c) 1997-2006 The PHP Group Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies with Zend Extension Manager v1.2.2, Copyright (c) 2003-2007, by Zend Technologies This is because SELinux is enabled on the server. Run: # sestatus SELinux status: enabled SELinuxfs mount: /selinux Current mode: enforcing Mode from config file: enforcing Policy version: 21 Policy from config file: targeted You need to disable selinux, Disable SELinux by running command # setenforce 0 This will only work until you reboot the server. For permanent solution edit /etc/selinux/config # vi /etc/selinux/config You need to set SELINUX=disabled on the file. Do a reboot after editing the file. [root@localhost html]# cat /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - SELinux is fully disabled. SELINUX=disabled # SELINUXTYPE= type of policy in use. Possible values are: # targeted - Only targeted network daemons are protected. # strict - Full SELinux protection. SELINUXTYPE=targeted This will resolve the issue. Thank you.