yum install epel-release -y
yum install screen nano unzip htop net-tools wget psmisc -y  systemctl stop firewalld.service
systemctl disable firewalld.service

yum install iptables iptables-services -y

systemctl enable iptables.service
systemctl start iptables.service

数据区:
mkfs.ext3 /dev/vdb
mkdir /dev/mapper/data
mount /dev/vdb /dev/mapper/data
/dev/vdb /dev/mapper/data ext3 defaults 1 1