You need a File called vagrant_secrets.rb to handle your secrets and env variables.

NODE_NETWORK is used to define the IPv4 addresses for the K8s nodes (only the NETWORK i.e. 10.0.0.), the last part of the address will be generated.

PODS_CIDR is used to define cidr for the pods in the cluster nodes. This value is given to kubeadm on creating the first control plane as --pod-network-cidr=<YOUR-PODS-CIDR>

USER_NAME and USER_PWD are used to define a username and password to be created on each vm. This user will be added to sudoers.

DOCKER_SERVER, DOCKER_USER, DOCKER_PWD and DOCKER_EMAIL are used to add a private docker registry to the k8s cluster, if you need one.

module Secrets
    NODE_NETWORK = "10.172.168."
    PODS_CIDR = "172.16.0.0/16"
    USER_NAME = "username"
    USER_PWD = "password"
    DOCKER_SERVER = "your-private-docker-registry.whatever.com"
    DOCKER_USER = "registry_username"
    DOCKER_PWD = "registry_password"
    DOCKER_EMAIL = "[email protected]"
end