Your CPU does not support KVM extention
On my host machine, I checked this command egrep -c '(vmx|svm)' /proc/cpuinfo
and I got 12
which means KVM acceleration can be used. But In my Controller Node and Compute Node, I checked the same command but I got 0
which means KVM acceleration cannot be used. why this occurred?
I am using VirtualBox to install multiple nodes