Add missing cluster script

scripts/setup-cluster.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+set -e
+
+if [ -z "$CLUSTER_NAME" ]; then
+    echo "CLUSTER_NAME must be specified when setting up a cluster"
+    exit 1
+fi
+
+if [ -z "$K3S_VERSION" ]; then
+  echo "K3S_VERSION must be specified when setting up a cluster, use $(k3d version list k3s) to find valid versions"
+  exit 1
+fi
+
+# waits until all nodes are ready
+wait_for_nodes(){
+  timeout=120
+  start_time=$(date +%s)
+  echo "wait until all agents are ready"
+  while :
+  do
+    current_time=$(date +%s)
+    elapsed_time=$((current_time - start_time))
+    if [ $elapsed_time -ge $timeout ]; then
+        echo "Timeout reached, exiting..."
+        exit 1
+    fi
+
+    readyNodes=1
+    statusList=$(kubectl get nodes --no-headers | awk '{ print $2}')
+    # shellcheck disable=SC2162
+    while read status
+    do
+      current_time=$(date +%s)
+      elapsed_time=$((current_time - start_time))
+      if [ $elapsed_time -ge $timeout ]; then
+          echo "Timeout reached, exiting..."
+          exit 1
+      fi
+      if [ "$status" == "NotReady" ] || [ "$status" == "" ]
+      then
+        readyNodes=0
+        break
+      fi
+    done <<< "$(echo -e  "$statusList")"
+    # all nodes are ready; exit
+    if [[ $readyNodes == 1 ]]
+    then
+      break
+    fi
+    sleep 1
+  done
+}
+
+k3d cluster delete $CLUSTER_NAME || true
+k3d cluster create $CLUSTER_NAME --image "docker.io/rancher/k3s:${K3S_VERSION}"
+
+wait_for_nodes
+
+echo "$CLUSTER_NAME ready"
+
+kubectl cluster-info --context k3d-${CLUSTER_NAME}
+kubectl config use-context k3d-${CLUSTER_NAME}
+kubectl get nodes -o wide