Start a multipass n node cluster, and handle it easily.

clusterplz.sh

#!/bin/bash

SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)

POSITIONAL_ARGS=()

while [[ $# -gt 0 ]]; do
    case $1 in
    #    -e|--extension)
    #     EXTENSION="$2"
    #      shift # past argument
    #      shift # past value
    #      ;;
    -* | --*)
        echo "Unknown option $1"
        exit 1
        ;;
    *)
        POSITIONAL_ARGS+=("$1") # save positional arg
        shift                   # past argument
        ;;
    esac
done

nodes=2
# shellcheck disable=SC2128
case "$POSITIONAL_ARGS" in
create)

    cat <<EOF >/tmp/cluster-plz.yaml
users:
  - default
  - name: $(echo $USER)
    sudo: ALL=(ALL) NOPASSWD:ALL
    ssh_authorized_keys:
    - $(cat ~/.ssh/id_rsa.pub)
packages:
- make
- gcc
- libssl-dev
- pkg-config
EOF
    for f in $(seq $nodes); do
        multipass launch -c 1 -m 1G -d 7G -n node-$f --cloud-init /tmp/cluster-plz.yaml --mount "${SCRIPT_DIR}/../:/home/ubuntu/skate"
    done

    for f in $(seq $nodes); do
        multipass snapshot node-$f
    done

    for f in $(seq $nodes); do
        multipass info node-$f
    done
    ;;
info)
    for f in $(seq $nodes); do
        multipass info node-$f
    done
    ;;
ips)
    for f in $(seq $nodes); do
        multipass info node-$f | grep IPv4 | awk '{print $2}'
    done
    ;;
restore)
    for f in $(seq $nodes); do
        multipass restore "node-${f}.in"
    done
    ;;
remove)
    for f in $(seq $nodes); do
        multipass delete --purge "node-${f}"
    done
    ;;
shell)
    SESSION="clusterplz"
    tmux kill-session -t $SESSION
    tmux new-session -d -s $SESSION
    # todo, split $nodes-1 times
    for f in $(seq $nodes); do
        tmux send-keys -t $SESSION "multipass shell node-$f" Enter
        if [ $f -ne $nodes ]; then
            tmux split-window -h -t $SESSION
        fi
    done
    tmux attach-session -t $SESSION
    ;;
esac