Centos內核升級

在yum的ELRepo源中,有 m ain l ine(3.13.1)、 l ong- t erm(3.10.28)這2個內核版本,考慮到long-term更穩定,會長期更新,因此選擇這個版本。vim

一、導入public keyui

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

二、安裝ELRepo到CentOS-6.5中this

rpm -ivh http://www.elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm

三、安裝 kernel-lt(lt=long-term)it

yum --enablerepo=elrepo-kernel install kernel-lt -y

或者安裝kernel-ml(ml=mainline)io

yum --enablerepo=elrepo-kernel install kernel-ml -y

四、編輯grub.conf文件,修改Grub引導順序import

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 do not have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /, eg.
#          root (hd0,0)
#          kernel /boot/vmlinuz-version ro root=/dev/sda1
#          initrd /boot/initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
hiddenmenu
title CentOS (3.10.28-1.el6.elrepo.x86_64)
        root (hd0,0)
        kernel /boot/vmlinuz-3.10.28-1.el6.elrepo.x86_64 ro root=UUID=0a05411f-16f2-4d69-beb0-2db4cefd3613 rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_MD crashkernel=auto LANG=en_US.UTF-8
 rd_NO_LVM rd_NO_DM rhgb quiet
        initrd /boot/initramfs-3.10.28-1.el6.elrepo.x86_64.img
title CentOS (2.6.32-431.3.1.el6.x86_64)
        root (hd0,0)
        kernel /boot/vmlinuz-2.6.32-431.3.1.el6.x86_64 ro root=UUID=0a05411f-16f2-4d69-beb0-2db4cefd3613 rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_MD crashkernel=auto LANG=en_US.UTF-8 r
d_NO_LVM rd_NO_DM rhgb quiet
        initrd /boot/initramfs-2.6.32-431.3.1.el6.x86_64.img
title CentOS (2.6.32-431.el6.x86_64)
        root (hd0,0)
        kernel /boot/vmlinuz-2.6.32-431.el6.x86_64 ro root=UUID=0a05411f-16f2-4d69-beb0-2db4cefd3613 rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_MD crashkernel=auto LANG=zh_CN.UTF-8 rd_NO
_LVM rd_NO_DM rhgb quiet
        initrd /boot/initramfs-2.6.32-431.el6.x86_64.img

確認剛安裝好的內核在哪一個位置,而後設置default值(從0開始),通常新安裝的內核在第一個位置,因此設置default=0。file

五、重啓,查看內核版本號im

[root@dev ~]# uname -r
3.10.28-1.el6.elrepo.x86_64
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