upgrade centos 6.5 kernel from 2.6 to 3.10

23 December 2016

steps

  1. upgrade kernel

    1. install package epel-release-6-8.noarch

       [gree2@test ~]$ sudo rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
 [sudo] password for test:
 Retrieving http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
 Preparing...                ########################################### [100%]
     package epel-release-6-8.noarch is already installed

    2. import public key

       [gree2@test ~]$ sudo rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

    3. install elrepo

       [gree2@test ~]$ sudo rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm
 Retrieving http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm
 Preparing...                ########################################### [100%]
    1:elrepo-release         ########################################### [100%]

    4. install kernel

       [gree2@test ~]$ sudo yum --enablerepo=elrepo-kernel install kernel-lt –y
 已加载插件：fastestmirror, refresh-packagekit, security
 设置安装进程
 Loading mirror speeds from cached hostfile
 epel/metalink | 6.5 kB     00:00
  * base: mirrors.aliyun.com
  * elrepo: mirrors.tuna.tsinghua.edu.cn
  * elrepo-kernel: mirrors.tuna.tsinghua.edu.cn
  * epel: mirrors.tuna.tsinghua.edu.cn
  * extras: mirrors.aliyun.com
  * updates: mirrors.aliyun.com
 WANdisco-git                                                 |  951 B     00:00
 base                                                         | 3.7 kB     00:00
 elrepo                                                       | 2.9 kB     00:00
 elrepo/primary_db                                            | 727 kB     00:01
 elrepo-kernel                                                | 2.9 kB     00:00
 elrepo-kernel/primary_db                                     |  20 kB     00:00
 epel                                                         | 4.3 kB     00:00
 epel/primary_db                                              | 5.9 MB     02:03
 extras                                                       | 3.4 kB     00:00
 gitlab-ce                                                    | 2.9 kB     00:00
 gitlab-ce/primary_db                                         | 1.1 MB     00:03
 updates                                                      | 3.4 kB     00:00
 http://mirrors.aliyun.com/centos/6/updates/x86_64/repodata/db9ad4c9c72226a12da21d3020b392a506ed5bf8bc05e69a3a80392b579fc790-primary.sqlite.bz2: [Errno 12] Timeout on http://106.2.184.228:9999/mirrors.aliyun.com/centos/6/updates/x86_64/repodata/db9ad4c9c72226a12da21d3020b392a506ed5bf8bc05e69a3a80392b579fc790-primary.sqlite.bz2: (28, 'connect() timed out!')
 尝试其他镜像。
 http://mirrors.aliyuncs.com/centos/6/updates/x86_64/repodata/db9ad4c9c72226a12da21d3020b392a506ed5bf8bc05e69a3a80392b579fc790-primary.sqlite.bz2: [Errno 14] PYCURL ERROR 7 - "couldn't connect to host"
 尝试其他镜像。
 解决依赖关系
 --> 执行事务检查
 ---> Package kernel-lt.x86_64 0:3.10.104-1.el6.elrepo will be 安装
 --> 完成依赖关系计算

 依赖关系解决

 ===============================================================================
  软件包         架构        版本                       仓库               大小
 ===============================================================================
 正在安装:
  kernel-lt     x86_64     3.10.104-1.el6.elrepo     elrepo-kernel     33 M

 事务概要
 ===============================================================================
 Install       1 Package(s)

 总下载量：33 M
 Installed size: 154 M
 确定吗？[y/N]：y
 下载软件包：
 kernel-lt-3.10.104-1.el6.elrepo.x86_64.rpm                   |  33 MB     03:21
 运行 rpm_check_debug
 执行事务测试
 事务测试成功
 执行事务
 Warning: RPMDB altered outside of yum.
   正在安装   : kernel-lt-3.10.104-1.el6.elrepo.x86_64         1/1
   Verifying  : kernel-lt-3.10.104-1.el6.elrepo.x86_64        1/1

 已安装:
   kernel-lt.x86_64 0:3.10.104-1.el6.elrepo

 完毕！

  2. use new kernel

    1. edit boot menu set default=0 from default=1

       [gree2@test ~]$ sudo cat /etc/grub.conf
 [sudo] password for test:
 # 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 (hd0,2)
 #          kernel /boot/vmlinuz-version ro root=/dev/sda3
 #          initrd /boot/initrd-[generic-]version.img
 #boot=/dev/sda1
 device (hd0) HD(1,800,fa000,42bf98ee-ca79-434f-8a7d-d4973a223a64)
 default=0
 timeout=5
 splashimage=(hd0,2)/boot/grub/splash.xpm.gz
 hiddenmenu
 title CentOS (3.10.104-1.el6.elrepo.x86_64)
     root (hd0,2)
     kernel /boot/vmlinuz-3.10.104-1.el6.elrepo.x86_64 ro root=UUID=c37a3cb8-201b-4a97-b5d8-350b44db13fe rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=128M  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
     initrd /boot/initramfs-3.10.104-1.el6.elrepo.x86_64.img
 title CentOS (2.6.32-642.6.1.el6.x86_64)
     root (hd0,2)
     kernel /boot/vmlinuz-2.6.32-642.6.1.el6.x86_64 ro root=UUID=c37a3cb8-201b-4a97-b5d8-350b44db13fe rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=128M  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
     initrd /boot/initramfs-2.6.32-642.6.1.el6.x86_64.img
 title CentOS (2.6.32-431.el6.x86_64)
     root (hd0,2)
     kernel /boot/vmlinuz-2.6.32-431.el6.x86_64 ro root=UUID=c37a3cb8-201b-4a97-b5d8-350b44db13fe rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=128M  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
     initrd /boot/initramfs-2.6.32-431.el6.x86_64.img

    2. check kernel version before reboot

       [gree2@test ~]$ uname -r
 2.6.32-642.6.1.el6.x86_64

    3. reboot

       [gree2@test ~]$ sudo reboot

    4. check kernel version after reboot

       [gree2@test ~]$ uname -r
 3.10.104-1.el6.elrepo.x86_64

references

  1. http://elrepo.org/tiki/tiki-index.php
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