1.查看当前版本

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[root@IDC-D-1699 docker]# cat /etc/issue CentOS release 6.8 (Final) Kernel \r on an \m

2.升级Centos

[root@IDC-D-1699 docker]# yum update –y

3.内核升级至3.10

前往http://www.elrepo.org/

 

3.1下载升级包

[root@localhost ~]# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org 
[root@localhost ~]# cd /etc/yum.repos.d/ 
[root@localhost yum.repos.d]# rpm -ivh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm 
[root@localhost yum.repos.d]# yum --enablerepo=elrepo-kernel install kernel-lt -y

3.2 修改grub.conf文件的default=0

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[root@localhost yum.repos.d]# 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/mapper/VolGroup-lv_root #          initrd /initrd-[generic-]version.img #boot=/dev/sda default=0 timeout=5

3.3 重启并查看内核

[root@localhost yum.repos.d]# reboot

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[root@localhost ~]# uname -r 3.10.94-1.el6.elrepo.x86_64 [root@localhost ~]# more /etc/issue CentOS release 6.7 (Final) Kernel \r on an \m