rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm

yum --disablerepo="*" --enablerepo="elrepo-kernel" list available

yum --enablerepo=elrepo-kernel install kernel-ml -y

sed -i 's@GRUB_DEFAULT=.*@GRUB_DEFAULT=0@g' /etc/default/grub

grub2-mkconfig -o /boot/grub2/grub.cfg

yum update -y

###@@@一下是自己使用的 谢谢

sed -i 's@SELINUX=.*@SELINUX=disabled@g' /etc/sysconfig/selinux

systemctl stop firewalld

systemctl disable firewalld

setenforce

yum install chrony -y

systemctl start chronyd

systemctl enable chronyd

echo -e '30 * * * * /usr/bin/systemctl restart chronyd' >> /etc/crontab

systemctl enable crond

systemctl start crond

init 

useradd -d /home/cephd -m cephd

echo "cephd" | passwd --stdin cephd

echo "cephd ALL = (root) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/cephd

chmod  /etc/sudoers.d/cephd