1、网卡配置
vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 HWADDR=00:0C:29:6C:BB:E6 NM_CONTROLLED="yes" ONBOOT=yes PEERDNS=yes BOOTPROTO=static IPADDR=192.168.0.8 NETMASK=255.255.255.0 GATEWAY=192.168.0.1注：重点配置最后4行，静态分配ip，ip地址，子网掩码、网关。
2、DNS配置
vi /etc/resolv.conf nameserver xxx.xxx.xxx.xxx
注：xxx.xxx.xxx.xxx是网关ip，可以配置多个。
3、安装源配置
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo yum clean all yum makecache yum update
4、第三方安装源配置
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm此命令安装完成之后就可以使用yum安装nginx、iftop、mysql等第三方包了