yum源可以分配到国内的镜像加速阿里云，网易，搜狐可以在这里给阿里云的解释http://mirrors.aliyun.com/hel...首先升级CentOS到6.8Finalyum更新配置elrepo（官网）提供内核源码升级内核先导入公钥rpm--importhttps://www.elrepo.org/RPM-GPG-KEY-elrepo.orgimportsourcerpm-Uvhhttp://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm然后可以选择安装最新版本的内核，或者安装最新版本的稳定版内核yum--enablerepo=elrepo-kernelinstall-ykernel-ml稳定版yum--enablerepo=elrepo-kernelinstallkernel-lt-y最后编辑/etc/grub.conf启动文件#anaconda生成的grub.conf##注意不要更改此文件后必须重新运行grub#注意：您没有/boot分区。这意味着#所有内核和initrd路径都是相对于/的，例如。#root(hd0,0)#kernel/boot/vmlinuz-versionroroot=/dev/sda1#initrd/boot/initrd-[generic-]version.img#boot=/dev/sdadefault=0timeout=5splashimage=(hd0,0)/boot/grub/splash.xpm.gzhiddenmenutitleCentOS(3.10.104-1.el6.elrepo.x86_64)root(hd0,0)内核/启动/vmlinuz-3.10.104-1.el6.elrepo.x86_64roroot=UUID=e70a0f35-5468-435d-b625-5924aee0a8adrd_NO_LUKSKEYBOARDTYPE=pcKEYTABLE=usrd_NO_MDcrashkernel=autoLANGNOitNObNOb_DMinrd_VMinrd_r.s1.boot-3.4-initramf/initramf1.el6.elrepo.x86_64.imgtitleCentOS(2.6.32-642.11.1.el6.x86_64)root(hd0,0)kernel/boot/vmlinuz-2.6.32-642.11.1.el6.x86_64roroot=UUID=e70a0f35-5468-435d-b625-5924aee0a8adrd_NO_LUKSKEYBOARDTYPE=pcKEYTABLE=usrd_NO_MDcrashkernel=autoLANG=zh_CN.UTF-8rd_NO_LVMrd_NO_DMrhgbquietinitrd/boot/initramfs-2.6.32-642_el.64.6x.1imgtitleCentOS(2.6.32-358.el6.x86_64)root(hd0,0)kernel/boot/vmlinuz-2.6.32-358.el6.x86_64roroot=UUID=e70a0f35-5468-435d-b625-5924aee0a8adrd_NO_LUKS键盘类型=pcKEYTABLE=usrd_NO_MDcrashkernel=autoLANG=zh_CN.UTF-8rd_NO_LVMrd_NO_DMrhgbquietinitrd/boot/initramfs-2.6.362-358.el4.x860,1,2默认新安装应该在最上面，所以把默认值改成0重启查看版本信息#cat/etc/redhat-releaseCentOSrelease6.8(Final)#uname-r3.10.104-1.el6.elrepo.x86_64Done
