1.升级内核
查看内核版本
uname -r
#升级
rpm –import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm
yum –enablerepo=elrepo-kernel install kernel-lt -y
vim /etc/grub.conf #将新版内核default改为0
reboot
2.安装docker
wget -O /etc/yum.repos.d/epel.repo htt