1. 备份本地yum源vim
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bakrest
2.获取阿里yum源配置文件server
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repoblog
3.更新cacheip
yum makecacheget
4.查看it
yum -y update配置
5.最后你就能够连接国内镜像了,其实就是那个什么城XXX的 。。。date
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_baknetwork
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum makecache
yum -y update
查看系统的网卡信息
/etc/sysconfig/network-scripts
可使用的静态配置的想信息
将要修改的配置的文件的信息
修改完 数据后。不能ping www.baidu.com
须要修改 DNS
vim /etc/resolv.conf
nameserver 114.114.114.114
nameserver 8.8.8.8
CentOS7 重启服务命令
systemctl restart network