CentOS6.8内核版本升级
1.查看当前版本
[root@www.linuxidc.com docker]# cat /etc/issue
CentOS release 6.8 (Final)
Kernel \r on an \m
2.升级CentOS
[root@www.linuxidc.com docker]# yum update –y
3.内核升级至3.10
前往http://www.elrepo.org/
3.1下载升级包
[root@localhost ~]# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]# rpm -ivh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm
[root@localhost yum.repos.d]# yum --enablerepo=elrepo-kernel install kernel-lt -y
3.2 修改grub.conf文件的default=0
[root@localhost yum.repos.d]# vim /etc/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root
# initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
3.3 重启并查看内核
[root@localhost yum.repos.d]# reboot
[root@localhost ~]# uname -r
3.10.94-1.el6.elrepo.x86_64
[root@localhost ~]# more /etc/issue
CentOS release 6.7 (Final)
Kernel \r on an \m
