如果没有安装成功:selinux 没有关闭
vi /etc/sysconfig/selinux
SELINUX=disabled
防火墙是否开启
关闭防火墙
[root@localhost ~]# /etc/init.d/iptables stop 关闭防火墙
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Flushing firewall rules: [ OK ]
iptables: Unloading modules: [ OK ]
[root@localhost ~]# /etc/init.d/iptables status 查看防火墙的状态
iptables: Firewall is not running.