centos7升级到centos8
只负责记录, 升级出了问题责任自负.
yum -y install epel-release yum-utils rpmconf dnf yum remove # # package-cleanup --leaves # package-cleanup --orphans # dnf -y remove yum yum-metadata-parser libsysfs dnf upgrade -y dnf upgrade -y http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/{centos-release-8.1-1.1911.0.8.el8.x86_64.rpm,centos-gpg-keys-8.1-1.1911.0.8.el8.noarch.rpm,centos-repos-8.1-1.1911.0.8.el8.x86_64.rpm} dnf upgrade -y epel-release dnf clean all rpm -e `rpm -q kernel` rpm -e --nodeps sysvinit-tools dnf -y --releasever=8 --allowerasing --setopt=deltarpm=false distro-sync dnf -y install kernel-core dnf -y groupupdate Core "Minimal Install" cat /etc/redhat-release
centos8的三个包centos-release centos-gpg-keys centos-repos版本会有变动, 操作的时候需要注意选择更新.
也可以不用http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/ ,选用centos vault的库.