CentOS7.7 升级到CentOS8
系统4年前 (2019-12-24)
将CentOS7.7在线升级到CentOS8.0
yum -y install epel-release yum -y install rpmconf yum-utils rpmconf -a #如果出现一些提示，输入Y和回车继续 执行 package-cleanup --leaves package-cleanup --orphans
如果没提示继续
yum -y install dnf dnf -y remove yum yum-metadata-parser rm -Rf /etc/yum dnf -y upgrade dnf install http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/centos-linux-repos-8-2.el8.noarch.rpm http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/centos-linux-release-8.4-1.2105.el8.noarch.rpm http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/centos-gpg-keys-8-2.el8.noarch.rpm dnf -y upgrade https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm dnf clean all
开始升级
rpm -e `rpm -q kernel` rpm -e --nodeps sysvinit-tools dnf -y --releasever=8 --allowerasing --setopt=deltarpm=false distro-sync #如果缺包就从http://mirror.centos.org/centos/8/AppStream/x86_64/os/Packages/里搜索下载安装
提示出错拆卸掉冲突软件
rpm -e --nodeps kernel-ml rpm -e --nodeps redhat-rpm-config wget http://mirror.centos.org/centos/8/AppStream/x86_64/os/Packages/redhat-rpm-config-116-1.el8.0.1.noarch.rpm rpm -ivh redhat-rpm-config-116-1.el8.0.1.noarch.rpm --force --nodeps rpm -e --nodeps bash-completion rpm -e --nodeps pycairo rpmconf -a
安装CentOS8组件
dnf -y install kernel-core dnf -y groupupdate "Core" "Minimal Install" cat /etc/redhat-release reboot
如果dnf update错误,拆卸epel7
dnf remove epel-release dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm -y
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，想必也是非常愉悦的事！
