Changes

You have to be sure that your server  has '''the kernel up-to-date''' before to install virtualbox, else the installation will fail.

You have to be sure that your server  has '''the kernel up-to-date''' before to install virtualbox, else the installation will fail.

  yum update

  yum install --enablerepo=epel dkms kernel

  signal-event post-upgrade;  signal-event reboot

  signal-event post-upgrade;  signal-event reboot