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CentOS使用yum的elrepo源升级内核 1、 导入public key 参考: http://elrepo.org/tiki/tiki-index.php Import the public key: rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org Detailed info on the GPG key used by the ELRepo Project can be found on https://www.elrepo.org/tiki/key If you have a system with Secure Boot enabled, please see the SecureBootKey page for more information. To install ELRepo for RHEL- 8 or CentOS- 8 : yum install https://www.elrepo.org/elrepo-release-8.1-1.el8.elrepo.noarch.rpm To make use of our mirror system, please also install yum-plugin-fastestmirror . To install ELRepo for