1.查看当前版本
[root@IDC-D-1699 docker]# cat /etc/issue CentOS release 6.8 (Final) Kernel on an m
2.升级Centos
[root@IDC-D-1699 docker]# yum update –y
3.内核升级至3.10
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
[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
[root@localhost ~]# uname -r 3.10.94-1.el6.elrepo.x86_64 [root@localhost ~]# more /etc/issue CentOS release 6.7 (Final) Kernel on an m