Centos7 installs virtualbox (too frustrating)

• 1.安装kernel-headers、kernel-devel
     It must be consistent with the kernel version of centOS. You can use rpm -qa | grep kernel | sort to see the version. You can use yum to install the corresponding version yourself, or you can go to the online warehouse to download the corresponding version rpm file

• 2. Install: wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo
Then execute these two commands: yum clean all yum makecache

• 3. Installation: yum install VirtualBox-5.1
• 4. Build the kennel module: yum install gcc make
• 5. Add the root user to the vboxusers group: usermod -a -G vboxusers root
• 6. Finally start: /sbin/vboxconfig