CentOS7 升级kernel

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  • 升级内核
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.orgyum install -y http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpmyum --enablerepo=elrepo-kernel install -y kernel-lt
  • 查看当前kernel列表
# egrep ^menuentry /etc/grub2.cfg | cut -f 2 -d \'CentOS Linux (4.4.60-1.el7.elrepo.x86_64) 7 (Core)CentOS Linux (4.10.9-1.el7.elrepo.x86_64) 7 (Core)CentOS Linux (3.10.0-514.10.2.el7.x86_64) 7 (Core)CentOS Linux, with Linux 3.10.0-123.el7.x86_64CentOS Linux, with Linux 0-rescue-2eda6ab7b347462bb20e7df6246d9cec
  • 设置开机启动的kernel
grub2-set-default 0
0 0