up

#!/usr/bin/env bash

vm-up() {
  local name="${1}"
  if multipass info "${name}" &> /dev/null; then
    echo "${name} exists"
  else
    multipass launch --name "${name}" --memory 8g --cpus 2 --disk 20G 22.04
  fi
}

get-ip() {
  local name="${1}"
  multipass info "${name}" | grep "^IPv4:" | sed "s/IPv4:[ ]*//"
}

append-key-to-authorized-keys() {
  local node="${1}"
  cat ./keys/key.pub | multipass transfer - "${node}":/tmp/key.pub
  multipass exec "${node}" -- bash -c 'LINE=$(cat /tmp/key.pub); DST=/home/ubuntu/.ssh/authorized_keys; grep -qF -- "${LINE}" "${DST}" || echo "${LINE}" >> "${DST}"'
}

# Create the nodes
vm-up "kube-node-0"
vm-up "kube-node-1"
vm-up "kube-node-2"

# Add ssh key to authorized_keys
append-key-to-authorized-keys "kube-node-0"
append-key-to-authorized-keys "kube-node-1"
append-key-to-authorized-keys "kube-node-2"

# Create ansible inventory
echo "
kube-node-0 ansible_ssh_host=$(get-ip "kube-node-0")
kube-node-1 ansible_ssh_host=$(get-ip "kube-node-1")
kube-node-2 ansible_ssh_host=$(get-ip "kube-node-2")

[nodes]
kube-node-1
kube-node-2
" > ./ansible/inventory