Linux 下更新kernel的方法以下是配置：
[root@kiccleaf ~]# file /sbin/init #查看当前系统是32位或64位系统 /sbin/init: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped [root@kiccleaf ~]# yum list kernel* #列出可更新的内容 Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: mirrors.163.com * base: mirrors.163.com * extras: mirrors.163.com * updates: mirrors.163.com addons | 951 B 00:00 base | 2.1 kB 00:00 extras | 2.1 kB 00:00 updates | 1.9 kB 00:00 Not using downloaded repomd.xml because it is older than what we have: Current : Sun Mar 13 01:44:04 2011 Downloaded: Fri Jan 7 17:26:51 2011 Installed Packages kernel.i686 2.6.18-194.el5 installed kernel.i686 2.6.18-194.32.1.el5 installed kernel-headers.i386 2.6.18-194.32.1.el5 installed Available Packages kernel-PAE.i686 2.6.18-194.32.1.el5 updates kernel-PAE-devel.i686 2.6.18-194.32.1.el5 updates kernel-debug.i686 2.6.18-194.32.1.el5 updates kernel-debug-devel.i686 2.6.18-194.32.1.el5 updates kernel-devel.i686 2.6.18-194.32.1.el5 updates kernel-doc.noarch 2.6.18-194.32.1.el5 updates kernel-xen.i686 2.6.18-194.32.1.el5 updates kernel-xen-devel.i686 2.6.18-194.32.1.el5 updates [root@kiccleaf ~]# yum install kernel-PAE.i686 -y #PAE为支持大内存的版本 Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: centos.ustc.edu.cn * base: centos.ustc.edu.cn * extras: centos.ustc.edu.cn * updates: centos.ustc.edu.cn Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package kernel-PAE.i686 0:2.6.18-194.32.1.el5 set to be installed --> Finished Dependency Resolution Dependencies Resolved ==================================================== Package Arch Version Repository Size ==================================================== Installing: kernel-PAE i686 2.6.18-194.32.1.el5 updates 17 M Transaction Summary ==================================================== Install 1 Package(s) Upgrade 0 Package(s) Total download size: 17 M Downloading Packages: kernel-PAE-2.6.18-194.32.1.el5.i686.rpm | 17 MB 01:59 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : kernel-PAE 1/1 Installed: kernel-PAE.i686 0:2.6.18-194.32.1.el5 Complete! [root@kiccleaf ~]#reboot #重启系统 [root@kiccleaf ~]# uname -a #查看更后的版本 Linux kiccleaf 2.6.18-194.32.1.el5 #1 SMP Wed Jan 5 17:53:09 EST 2011 i686 i686 i386 GNU/Linux