terraform/main.tf

@@ -79,7 +79,6 @@ resource "vsphere_virtual_machine" "control" {
   firmware = data.vsphere_virtual_machine.template.firmware
   hardware_version = data.vsphere_virtual_machine.template.hardware_version
   scsi_type = data.vsphere_virtual_machine.template.scsi_type
-  wait_for_guest_net_timeout = 10
 
   extra_config = {
     "disk.EnableUUID" = "TRUE"
@@ -164,7 +163,6 @@ resource "vsphere_virtual_machine" "worker" {
   firmware = data.vsphere_virtual_machine.template.firmware
   hardware_version = data.vsphere_virtual_machine.template.hardware_version
   scsi_type = data.vsphere_virtual_machine.template.scsi_type
-  wait_for_guest_net_timeout = 10
 
   network_interface {
     network_id = data.vsphere_network.network.id

terraform/scripts/initialize-controlplane.sh

@@ -1,8 +1,7 @@
 #!/bin/bash -eu
 source ./env.txt
 
-if [ "${HOSTNAME}" == "${K8S_INITIAL_NODE}" ]; then
-  if [ ! -f /etc/kubernetes/manifests/kube-vip.yaml ]; then
+if [ ! -f /etc/kubernetes/manifests/kube-vip.yaml ]; then
   echo ">> Configuring kube-vip..."
   sudo ctr image pull ghcr.io/kube-vip/kube-vip:"${KUBEVIP_VER}"
   sudo ctr run --rm --net-host ghcr.io/kube-vip/kube-vip:"${KUBEVIP_VER}" vip /kube-vip manifest pod \
@@ -11,7 +10,9 @@ if [ "${HOSTNAME}" == "${K8S_INITIAL_NODE}" ]; then
     --controlplane \
     --arp \
     --leaderElection | sudo tee /etc/kubernetes/manifests/kube-vip.yaml
-  fi
+fi
+
+if [ "${HOSTNAME}" == "${K8S_INITIAL_NODE}" ]; then
   if ! kubectl get nodes 2>/dev/null; then
     echo ">> Bootstrapping first controlplane node..."
     cat << EOF > kubeadminit.yaml
@@ -56,14 +57,14 @@ EOF
 
       echo ">> Creating discovery config..."
       kubectl -n kube-public get configmap cluster-info -o jsonpath='{.data.kubeconfig}' > discovery.yaml
-      sudo install -m 600 discovery.yaml /etc/kubernetes/discovery.yaml
+      sudo install -o root -g root -m 600 discovery.yaml /etc/kubernetes/discovery.yaml
     else
       echo ">> [ERROR] Cluster initialization unsuccessful on ${HOSTNAME}! <<"
       exit 1
     fi
   fi
   echo ">> Waiting up to 10 minutes for all control-plane nodes to be Ready..."
-  python3 -m http.server 2>/dev/null &
+  python3 -m http.server &
   PROC_ID=$!
   attempts_max=60
   attempt=0
@@ -387,11 +388,8 @@ else
   attempt=0
   until [ -f /etc/kubernetes/discovery.yaml ]; do
     wget "http://${K8S_CONTROLPLANE_VIP}:8000/discovery.yaml" 2>/dev/null
-    if ! sudo install -m 600 discovery.yaml /etc/kubernetes/discovery.yaml 2>/dev/null; then
-      if [ ${attempt} -eq ${attempts_max} ]; then
-        echo ">> [ERROR] Timeout waiting for discovery.yaml! <<"
-        exit 1
-      fi
+    sudo install -o root -g root -m 600 discovery.yaml /etc/kubernetes/discovery.yaml 2>/dev/null
+    if [ ! -f /etc/kubernetes/discovery.yaml ]; then
       attempt=$((attempt+1))
       sleep 10
     fi
@@ -411,17 +409,7 @@ nodeRegistration:
 controlPlane:
   certificateKey: ${KUBEADM_CERTKEY}
 EOF
-  if sudo kubeadm join "${K8S_CONTROLPLANE_VIP}:6443" --config kubeadmjoin.yaml; then
-    if [ ! -f /etc/kubernetes/manifests/kube-vip.yaml ]; then
-      echo ">> Configuring kube-vip..."
-      sudo ctr image pull ghcr.io/kube-vip/kube-vip:"${KUBEVIP_VER}"
-      sudo ctr run --rm --net-host ghcr.io/kube-vip/kube-vip:"${KUBEVIP_VER}" vip /kube-vip manifest pod \
-        --interface ens192 \
-        --vip "${K8S_CONTROLPLANE_VIP}" \
-        --controlplane \
-        --arp \
-        --leaderElection | sudo tee /etc/kubernetes/manifests/kube-vip.yaml
-    fi
+  if sudo kubeadm join "${K8S_CONTROLPLANE_VIP}":6443 --config kubeadmjoin.yaml; then
     echo ">> Node ${HOSTNAME} successfully initialized!"
     touch .k8s-node-success
     mkdir -p "${HOME}"/.kube

terraform/scripts/join-workers.sh

@@ -17,7 +17,7 @@ echo ">> Continuing after $((attempt*10)) seconds."
 echo ">> Waiting up to 10 minutes for all control-plane nodes..."
 attempts_max=60
 attempt=0
-until wget "http://${K8S_CONTROLPLANE_VIP}:8000/.k8s-controlplane-success" 2>/dev/null; do
+until "$(wget http://${K8S_CONTROLPLANE_VIP}:8000/.k8s-controlplane-success)" 2>/dev/null; do
   if [ ${attempt} -eq ${attempts_max} ]; then
     echo ">> [ERROR] Timeout waiting for control-plane nodes! <<"
     exit 1
@@ -31,7 +31,7 @@ attempts_max=6
 attempt=0
 until [ -f /etc/kubernetes/discovery.yaml ]; do
   wget "http://${K8S_CONTROLPLANE_VIP}:8000/discovery.yaml" 2>/dev/null
-  sudo install -m 600 discovery.yaml /etc/kubernetes/discovery.yaml 2>/dev/null
+  sudo install -o root -g root -m 600 discovery.yaml /etc/kubernetes/discovery.yaml 2>/dev/null
   if [ ! -f /etc/kubernetes/discovery.yaml ]; then
     attempt=$((attempt+1))
     sleep 10

terraform/terraform.example.tfvars

@@ -20,15 +20,15 @@ vm-domain = "lab.local"
 # Control plane specs
 vm-control-count = "3"
 vm-control-cpu = "2"
-vm-control-ram = "4096"
+vm-control-ram = "2048"
 vm-control-disk-size = "30"
 vm-control-ip-address-start = "60"
 vm-control-name = "k8s-control"
 
 # Worker specs
 vm-worker-count = "3"
-vm-worker-cpu = "4"
-vm-worker-ram = "8192"
+vm-worker-cpu = "1"
+vm-worker-ram = "1024"
 vm-worker-disk-size = "30"
 vm-worker-ip-address-start = "64"
 vm-worker-name = "k8s-worker"