今天在搭建LAMP环境，安装完MySQL,Apache和PHP后，启动Apache系统提示：
[root@ ~]# /opt/www/bin/apachectl start
httpd: Syntax error on line 135 of /opt/www/conf/httpd.conf: Cannot load /opt/www/modules/libphp5.so into server: /opt/www/modules/libphp5.so: cannot restore segment prot after reloc: Permission denied
后来在网上查找了下原因发现出现此原因一般在RedHat/RHEL/Fedora/CentOS 系统里，这是因为Redhat公司的SElinux在做鬼，解决方法：禁止掉SElinux
[root@ modules]# vi /etc/sysconfig/selinux
# 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=enforcing
SELINUX=disable
# SELINUXTYPE= type of policy in use. Possible values are:
# targeted - Only targeted network daemons are protected.
# strict - Full SELinux protection.
SELINUXTYPE=targeted
修改完成后重启系统，成功启动Aapche。
