介绍

CentOS6.9升级7 [upgrade] name=upgrade baseurl=http://dev.centos.org/centos/6/upg/x86_64/ enable=1 gpgcheck=0 yum -y install preupgrade-assistant-contents redhat-upgrade-tool preupgrade-assistant 安装升级工具 preupg 升级前的检查 yum install w3m w3m-img w3m-el rpm --import http://centos.excellmedia.net/7.3.1611/os/x86_64/RPM-GPG-KEY-CentOS-7 redhat-upgrade-tool --network 7.3 --instrepo http://centos.excellmedia.net/7.3.1611/os/x86_64/ centos-upgrade-tool-cli --network 7 --instrepo=http://vault.centos.org/centos/7.2.1511/os/x86_64/

• 升级内核

rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm yum --disablerepo="*" --enablerepo="elrepo-kernel" list available yum --enablerepo=elrepo-kernel install kernel-ml

参考

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查看原文：​​http://surenpi.com/2017/07/14/centos6-9-to-7/​​