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 controller-1 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.
Generate Key Pair on controller-1 node
ssh-keygen
Leave all settings to default.
View the generated public key ID at:
cat .ssh/id_rsa.pub
output
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQD......8+08b ubuntu@controller-1
Move public key of controller-1 to all other VMs. Access each VM using the following multipass command
multipass shell controller-2
Then add public key from controller-1 to the authorized keys for all hosts (including controller-1)
cat >> ~/.ssh/authorized_keys <<EOF
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQD......8+08b ubuntu@controller-1
EOF
Next: Network Loadbalancer