使用yum快速升级CentOS 6.5内核到最新版本

使用yum快速升级CentOS 6.5内核到最新版本

原文地址:http://www.tuicool.com/articles/rUvERv

在yum的ELRepo源中,有 m ain l ine(3.13.1)、 l ong- t erm(3.10.28)这2个内核版本,考虑到long-term更稳定,会长期更新,所以选择这个版本。

1、导入public key

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

2、安装ELRepo到CentOS-6.5中

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

3、安装 kernel-lt(lt=long-term)

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

或者安装kernel-ml(ml=mainline)

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

4、编辑grub.conf文件,修改Grub引导顺序

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/vda3
#          initrd /initrd-[generic-]version.img
#boot=/dev/vda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (4.8.12-1.el6.elrepo.x86_64)
        root (hd0,0)
        kernel /vmlinuz-4.8.12-1.el6.elrepo.x86_64 ro root=UUID=97fbe540-c883-4463-b94f-78157cd99ac8 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
        initrd /initramfs-4.8.12-1.el6.elrepo.x86_64.img
title CentOS (3.10.104-1.el6.elrepo.x86_64)
        root (hd0,0)
        kernel /vmlinuz-3.10.104-1.el6.elrepo.x86_64 ro root=UUID=97fbe540-c883-4463-b94f-78157cd99ac8 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
        initrd /initramfs-3.10.104-1.el6.elrepo.x86_64.img
title CentOS (2.6.32-642.11.1.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-642.11.1.el6.x86_64 ro root=UUID=97fbe540-c883-4463-b94f-78157cd99ac8 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
        initrd /initramfs-2.6.32-642.11.1.el6.x86_64.img
title CentOS 6 (2.6.32-573.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-573.el6.x86_64 ro root=UUID=97fbe540-c883-4463-b94f-78157cd99ac8 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
        initrd /initramfs-2.6.32-573.el6.x86_64.img

确认刚安装好的内核在哪个位置,然后设置default值(从0开始),一般新安装的内核在第一个位置,所以设置default=0。

5、重启,查看内核版本号

[root@dev ~]# uname-r
4.8.12-1.el6.elrepo.x86_64

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