diff --git a/infrastructure-admin/main.tf b/infrastructure-admin/main.tf
index f2072e0..5540b87 100644
--- a/infrastructure-admin/main.tf
+++ b/infrastructure-admin/main.tf
@@ -48,6 +48,7 @@ resource "proxmox_vm_qemu" "controller" {
   }
   memory      = 1024
   scsihw      = "virtio-scsi-pci"
+  os_type   = "cloud-init"
   disks {
     scsi {
       scsi0 {
@@ -75,15 +76,19 @@ resource "proxmox_vm_qemu" "controller" {
   cipassword = var.admin_password
   sshkeys = var.ssh_public_key
 
-  cicustom = <<EOT
-#cloud-config
-package_update: true
-packages:
-  - curl
-runcmd:
-  - |
-    curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="server --cluster-init --token=${random_password.k3s_token.result} --write-kubeconfig-mode=644" sh -
-EOT
+  connection {
+    type        = "ssh"
+    user        = var.admin_user
+    private_key = var.ssh_public_key
+    host        = var.controller_ip
+    port        = 22
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC=\"server --cluster-init --token=${random_password.k3s_token.result} --write-kubeconfig-mode=644\" sh -"
+    ]
+  }
 }
 
 # ----------------------
@@ -94,6 +99,7 @@ resource "proxmox_vm_qemu" "worker1" {
   target_node = var.target_nodes["worker1"]
   clone_id       = var.template_id
   full_clone  = true
+  os_type   = "cloud-init"
   cpu {
     cores = 2
     sockets     = 1
@@ -127,15 +133,19 @@ resource "proxmox_vm_qemu" "worker1" {
   cipassword = var.admin_password
   sshkeys = var.ssh_public_key
 
-  cicustom = <<EOT
-#cloud-config
-package_update: true
-packages:
-  - curl
-runcmd:
-  - |
-    curl -sfL https://${var.controller_ip}:6443 | K3S_URL=https://${var.controller_ip}:6443 K3S_TOKEN=${random_password.k3s_token.result} sh -
-EOT
+  connection {
+    type        = "ssh"
+    user        = var.admin_user
+    private_key = var.ssh_public_key
+    host        = var.worker1_ip
+    port        = 22
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "curl -sfL https://${var.controller_ip}:6443 | K3S_URL=https://${var.controller_ip}:6443 K3S_TOKEN=${random_password.k3s_token.result} sh -"
+    ]
+  }
 }
 
 # ----------------------
@@ -146,6 +156,7 @@ resource "proxmox_vm_qemu" "worker2" {
   target_node = var.target_nodes["worker2"]
   clone_id       = var.template_id
   full_clone  = true
+  os_type   = "cloud-init"
   cpu {
     cores = 2
     sockets     = 1
@@ -179,15 +190,19 @@ resource "proxmox_vm_qemu" "worker2" {
   cipassword = var.admin_password
   sshkeys = var.ssh_public_key
 
-  cicustom = <<EOT
-#cloud-config
-package_update: true
-packages:
-  - curl
-runcmd:
-  - |
-    curl -sfL https://${var.controller_ip}:6443 | K3S_URL=https://${var.controller_ip}:6443 K3S_TOKEN=${random_password.k3s_token.result} sh -
-EOT
+  connection {
+    type        = "ssh"
+    user        = var.admin_user
+    private_key = var.ssh_public_key
+    host        = var.worker2_ip
+    port        = 22
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "curl -sfL https://${var.controller_ip}:6443 | K3S_URL=https://${var.controller_ip}:6443 K3S_TOKEN=${random_password.k3s_token.result} sh -"
+    ]
+  }
 }
 
 # ----------------------