How to Install kubeadm in local VM

Is there any guide to installing kubeadm in a local machine using VM VirtualBox with one Master and 2 worker nodes? I have tried these https://www.youtube.com/watch?v=uUupRagM7m0&list=PL2We04F3Y_41jYdadX55fdJplDvgNGENo&index=2 instructions but I got somehow stuck and could not complete as it kept asking for password at this point: Generating Kubernetes Configuration Files for Authentication
The admin Kubernetes Configuration File

so I felt disappointed and stopped

One of our engineers wrote a really useful guide using VirtualBox and Vagrant. It’s in the CKA course repo. Try it out; it’s very thorough and clear.

Thank you so much for your assistant, I’ll try that.

Thanks. Got it working! Labs are local, AWS is out.