Shulou(Shulou.com)06/01 Report--

Replace the centos6 kernel with the oracle uek kernel

2016-11-16

1. Use the script provided by oracle to complete the replacement reference: http://www.tuicool.com/articles/IRbU3e[root@svr205-7 ~] # curl-O https://linux.oracle.com/switch/centos2ol.sh[root@svr205-7 ~] # sh centos2ol.sh [root@svr205-7 ~] # yum upgradeoh yeah. When the upgrade is completed, please note that there should be enough disk space when upgrade. [root@svr205-7] # rpm-qif / etc/redhat-release Name: oraclelinux-release Relocations: (not relocatable) Version: 6Server Vendor: Oracle AmericaRelease: 6.0.2 Build Date: Thu 16 Oct 2014 10:08:37 AM CSTInstall Date: Thu 28 May 2015 01:50:37 PM CST Build Host: ca-buildj3.us.oracle. ComGroup: System Environment/Base Source RPM: oraclelinux-release-6Server-6.0.2.src.rpmSize: 49559 License: GPLSignature: RSA/8 Thu 16 Oct 2014 10:41:14 AM CST Key ID 72f97b74ec551f03Summary: Oracle Linux 6 release fileDescription: System release and information files [root@svr205-7] # cat / etc/issueOracle Linux Server release 6.6Kernel\ r on an\ m [root@svr205-7] # uname-r2.6.32-504.23.4.el6.x86_64 [root@svr205-7] # cat / 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/vg_svr2057-lv_root# initrd / initrd- [generic-] version.img#boot=/dev/sdadefault=0timeout=5splashp_w_picpath= (hd0,0) / grub/splash.xpm.gzhiddenmenutitle Oracle Linux Server Red Hat Compatible Kernel (2.6.32-504.23.4.el6.x86_64) root (hd0,0) kernel / vmlinuz-2.6 .32-504.23.4.el6.x86_64 ro root=/dev/mapper/vg_svr2057-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=vg_svr2057/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=vg_svr2057/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet initrd / initramfs-2.6.32-504.23.4.el6.x86_64.imgtitle Oracle Linux Server Red Hat Compatible Kernel (2.6.32- 431.el6.x86_64) root (hd0,0) kernel / vmlinuz-2.6.32-431.el6.x86_64 ro root=/dev/mapper/vg_svr2057-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=vg_svr2057/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=vg_svr2057/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet initrd / initramfs-2.6.32-431.el6. X86_64.imgtitle CentOS (2.6.32-431.el6.x86_64) root (hd0,0) kernel / vmlinuz-2.6.32-431.el6.x86_64 ro root=/dev/mapper/vg_svr2057-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=vg_svr2057/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=vg_svr2057/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet initrd / initramfs-2.6.32-431.el6.x86_64.img problem: if the script execution fails (such as encountered an exception related to the yum source) It may be troublesome because some dependent packages of the old kernel version have been uninstalled in the script, which should be taken seriously. II. Replace only one kernel 1) prepare to install oracle uek kernel [root@test ~] # wget http://public-yum.oracle.com/public-yum-ol6.repo-O / etc/yum.repos.d/public-yum-ol6.repo [root@test ~] # rpm-- import http://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol6[root@test ~] # yum install yum-plugin-downloadonly-y [root@test ~] # yum install- -downloadonly-- downloaddir=/tmp/ kernel-uek-y2) install uek [root@test ~] # cd / tmp [root@test tmp] # yum localinstall kernel-uek* using the new kernel Edit grub to adjust boot order: [root@test tmp] # vim / etc/grub.conf View: [root@test tmp] # uname-r2.6.39-400.290.1.el6uek.x86_64 after rebooting the system

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