在启动php-cgi时报如下的错误
Starting php_fpm /usr/local/nginx/fastcgi/bin/php-cgi: error while loading shared libraries: /usr/local/mysql/lib/libmysqlclient.so.15: cannot restore segment prot after reloc: Permission denied
通过一番搜索后，得到如下解决办法：
[root@localhost ~]# more /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
# SELINUXTYPE= type of policy in use. Possible values are:
# targeted – Only targeted network daemons are protected.
# strict – Full SELinux protection.
SELINUXTYPE=targeted
看来是selinux的缘故，关掉selinux试试！
修改SELINUX=disabled，然后重启系统才能生效，或者执行：setenforce 0，立即生效。
果然，关闭selinux后，可以正常启动了。
其实在上面出现Permission denied时，也可以执行
#chcon -t texrel_shlib_t?/usr/local/mysql/lib/libmysqlclient.so.15
