First identify a system from where you will perform administrative tasks, such as creating certificates, kubeconfig files and distributing them to the different VMs.
If you are on a Linux laptop, then your laptop could be this system. In my case I chose the controlplane node to perform administrative tasks. Whichever system you chose make sure that system is able to access all the provisioned VMs through SSH to copy files over.
Here we create an SSH key pair for the vagrant user who we are logged in as. We will copy the public key of this pair to both workers to permit us to use password-less SSH (and SCP) to get from controlplane to these other nodes in the context of the vagrant user which exists on all nodes.
Generate Key Pair on controlplane node
ssh-keygen
Leave all settings to default (just press ENTER at any questions).
Copy the key to the other hosts. For this step please enter vagrant where a password is requested.
The option -o StrictHostKeyChecking=no tells it not to ask if you want to connect to a previously unknown host. Not best practice in the real world, but speeds things up here.
ssh-copy-id -o StrictHostKeyChecking=no vagrant@node01
ssh-copy-id -o StrictHostKeyChecking=no vagrant@node02
For each host, the output should be similar to this. If it is not, then you may have entered an incorrect password. Retry the step.
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'vagrant@node01'"
and check to make sure that only the key(s) you wanted were added.
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