1.关闭防火墙和SELinux

​​systemctl stop firewalld​​

​​systemctl disable firewalld​​


​​setenforce 0​​

​​[root@server21 ~]# vim /etc/selinux/config​​


2.设置IP地址和主机名

​​vim /etc/sysconfig/network-scripts/ifcfg-ens33 ​​


3.安装必要的软件

​​yum -y install vim wget lrzsz bash-comp* net-tools ​​


4.设置Yum源

4.1设置本地源

​​vim /etc/yum.repos.d/CentOS-Local.repo​​

[centos local]
name=centos local
baseurl=file:///mnt
gpgcheck=0
enabled=1


4.2设置网络源

阿里镜像站：​​https://developer.aliyun.com/mirror/​​

​​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 https://mirrors.aliyun.com/repo/Centos-7.repo​​

​​yum makecache​​

​​yum repolist​​


4.3设置epel源

​​mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup ​​

​​mv /etc/yum.repos.d/epel-testing.repo /etc/yum.repos.d/epel-testing.repo.backup​​

​​wget -O /etc/yum.repos.d/epel.repo https://mirrors.aliyun.com/repo/epel-7.repo​​

​​yum makecache​​

​​yum repolist​​