Centos7.6升级系统版本到Centos7.9

前言

Centos7.6升级系统版本到Centos7.9

一、查看当前版本

cat /etc/redhat-release

结果输出

CentOS Linux release 7.6.1810 (Core)

二、更换yum源并升级

1.更换yum源

备份已有源文件后更换为阿里云的源文件

yum install wget -y

mkdir -p /etc/yum.repos.d/CentOS-Base.repo.backup

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

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

yum -y install epel-release

2.执行升级并重启

yum update -y;

reboot;

输出

已安装:

iwl7260-firmware.noarch 0:25.30.13.0-82.el7_9 kernel.x86_64 0:3.10.0-1160.108.1.el7

作为依赖被安装:

bc.x86_64 0:1.06.95-13.el7 bind-export-libs.x86_64 32:9.11.4-26.P2.el7_9.15 geoipupdate.x86_64 0:2.5.0-2.el7

三、查看升级结果

cat /etc/redhat-release

结果输出

CentOS Linux release 7.9.2009 (Core)

总结

记录一下centos7.6升级到7.9的方法。