1、修改网卡文件名

cd /etc/sysconfig/network-scripts/ 
mv ifcfg-ens33 ifcfg-eth0 
mv ifcfg-ens34 ifcfg-eth1

2、修改网卡文件内容

cat > ifcfg-eth0<<END 
	TYPE=Ethernet
	BOOTPROTO=none
	DEFROUTE=yes
	IPV4_FAILURE_FATAL=no
	NAME=eth0
	DEVICE=eth0
	ONBOOT=yes
	IPADDR=10.0.0.201
	PREFIX=24
	GATEWAY=10.0.0.254
	DNS1=223.5.5.5
	DNS2=223.6.6.6
	END
	[root@CentOS7 network-scripts]#
 cat  >ifcfg-eth1<<END
	TYPE=Ethernet
	BOOTPROTO=none
	DEFROUTE=yes
	IPV4_FAILURE_FATAL=no
	NAME=eth1
	DEVICE=eth1
	ONBOOT=yes
	IPADDR=172.16.1.200
	PREFIX=24
	END

3、修改并生成grub配置

[root@CentOS7 network-scripts]# vim   /etc/sysconfig/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="rhgb net.ifnames=0 biosdevname=0 quiet"
GRUB_DISABLE_RECOVERY="true"
[root@CentOS7 network-scripts]# 

4、 生成grub启动菜单

[root@CentOS7 network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-4860b79d6cd240788b962a1dbdef488d
Found initrd image: /boot/initramfs-0-rescue-4860b79d6cd240788b962a1dbdef488d.img
done
[root@CentOS7 network-scripts]# 

　

5、安装ifconfig

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
yum install wget net-tools vim bash-completion lrzsz nmap nc tree -y
systemctl stop firewalld.service
systemctl disable firewalld.service
sed -i.ori 's#SELINUX=enforcing#SELINUX=disabled#' /etc/selinux/config

　6、重启系统

reboot