每次新装CentOS后都要整一堆的基础配置信息，十分的不便，经整理成文档后，复制粘贴运行，工作变得轻松加愉快，工作效率直接翻倍。

1.安装国内更新源

#Centos7

yum install wget -y

cp -p /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak0

wget https://mirrors.aliyun.com/repo/Centos-7.repo -O /etc/yum.repos.d/CentOS-Base.repo

sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

yum install epel-release -y

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

yum clean all

yum makecache

yum upgrade -y

#Centos8

yum install wget -y

cp -p /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak0

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo

sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

yum clean all

yum makecache

yum upgrade -y

2.安装工具类软件

yum install net-tools tree vim lrzsz rsync unzip bzip2 -y

3.配置VIM

vim ~/.vimrc

:set paste

set number

set ruler

set hls

4.禁用防火墙

systemctl stop firewalld.service

systemctl disable firewalld.service

iptables [centos6]

/etc/init.d/iptables status

/etc/init.d/iptables stop

selinux

    vim /etc/selinux/config

        disabled

    #重启生效reboot

5.CENTOS7开机显示IP地址

cp /etc/issue /etc/issue_standard

vim /etc/init.d/show_ip.sh

#!/bin/bash

cp /etc/issue_standard /etc/issue

/usr/sbin/ip addr | grep "inet" |grep -v "inet6" | grep -v "127.0.0.1" | awk '{print $2}' >> /etc/issue

echo "" >> /etc/issue

修改脚本运行权限

chmod a+x /etc/init.d/show_ip.sh

配置脚本开机自启动

echo "/etc/init.d/show_ip.sh" >> /etc/rc.local

chmod a+x /etc/rc.local

重启生效reboot

6.修改主机名称

hostnamectl set-hostname Kickstart