阿里云/腾讯云 CentOS7 在线升级 CentOS8 脚本

bdyfpocosd

在轻量应用服务器上测试过。建议只在刚生成的机器上使用。https://github.com/kxn/scripts/blob/master/CentOS/aliyun-txyun-7-to-8.sh

#!/bin/sh

yum -y upgrade

yum -y install epel-release

yum -y install rpmconf

yes | rpmconf -a

yum -y remove python36-rpmconf rpmconf

yum -y install dnf

dnf -y upgrade

dnf -y install http://mirrors.163.com/centos/8/ ... .0.1.el8.x86_64.rpm http://mirrors.163.com/centos/8/ ... .0.1.el8.x86_64.rpm http://mirrors.163.com/centos/8/ ... .0.1.el8.noarch.rpm

mv -f /etc/yum.repos.d/CentOS-Base.repo.rpmnew /etc/yum.repos.d/CentOS-Base.repo

rm -f /etc/yum.repos.d/CentOS-Epel.repo

dnf -y upgrade http://hkg.mirror.rackspace.com/ ... latest-8.noarch.rpm

yum -y remove kmod-kvdo

rpm -e `rpm -q kernel-devel`

rpm -e `rpm -q kernel`

rpm -e --nodeps sysvinit-tools

dnf -y remove yum yum-metadata-parser

rm -rf /etc/yum

dnf -y --releasever=8 --allowerasing --setopt=deltarpm=false distro-sync

dnf -y install kernel-core kernel-modules

dnf -y groupupdate "Core" "Minimal Install"

rpm -qa |grep el7 | xargs dnf -y remove

systemctl enable NetworkManager

systemctl disable network

dnf -y remove tuned sssd-common