test(packer): add cpu & ram internal variable.

tests/packer/archlinux.pkr.hcl

@@ -8,8 +8,8 @@ source "qemu" "archlinux" {
   iso_checksum       = "file:https://geo.mirror.pkgbuild.com/images/latest/Arch-Linux-x86_64-cloudimg.qcow2.SHA256"
   iso_target_path    = "${var.iso_dir}/archlinux-cloudimg-amd64.img"
   cpu_model          = "host"
-  cpus               = 6
-  memory             = 4096
+  cpus               = var.cpus
+  memory             = var.ram
   disk_size          = var.disk_size
   accelerator        = "kvm"
   headless           = true

tests/packer/debian.pkr.hcl

@@ -8,8 +8,8 @@ source "qemu" "debian" {
   iso_checksum       = "file:https://cdimage.debian.org/images/cloud/${var.release.debian.codename}/latest/SHA512SUMS"
   iso_target_path    = "${var.iso_dir}/debian-${var.release.debian.codename}-cloudimg-amd64.img"
   cpu_model          = "host"
-  cpus               = 6
-  memory             = 4096
+  cpus               = var.cpus
+  memory             = var.ram
   disk_size          = var.disk_size
   accelerator        = "kvm"
   headless           = true

tests/packer/opensuse.pkr.hcl

@@ -10,8 +10,8 @@ source "qemu" "opensuse" {
   iso_checksum       = "sha256:223ed62160ef4f1a4f21b69c574f552a07eee6ef66cf66eef2b49c5a7c4864f4"
   iso_target_path    = "${var.base_dir}/base-tumbleweed-gnome.qcow2"
   cpu_model          = "host"
-  cpus               = 6
-  memory             = 4096
+  cpus               = var.cpus
+  memory             = var.ram
   disk_size          = var.disk_size
   accelerator        = "kvm"
   headless           = false

tests/packer/ubuntu.pkr.hcl

@@ -8,8 +8,8 @@ source "qemu" "ubuntu22" {
   iso_checksum       = "file:https://cloud-images.ubuntu.com/${var.release.ubuntu22.codename}/current/SHA256SUMS"
   iso_target_path    = "${var.iso_dir}/ubuntu-${var.release.ubuntu22.codename}-cloudimg-amd64.img"
   cpu_model          = "host"
-  cpus               = 6
-  memory             = 4096
+  cpus               = var.cpus
+  memory             = var.ram
   disk_size          = var.disk_size
   accelerator        = "kvm"
   headless           = true
@@ -45,8 +45,8 @@ source "qemu" "ubuntu24" {
   iso_checksum       = "file:https://cloud-images.ubuntu.com/${var.release.ubuntu24.codename}/current/SHA256SUMS"
   iso_target_path    = "${var.iso_dir}/ubuntu-${var.release.ubuntu24.codename}-cloudimg-amd64.img"
   cpu_model          = "host"
-  cpus               = 6
-  memory             = 4096
+  cpus               = var.cpus
+  memory             = var.ram
   disk_size          = var.disk_size
   accelerator        = "kvm"
   headless           = true

tests/packer/variables.pkr.hcl

@@ -22,6 +22,18 @@ variable "ssh_publickey" {
   default     = "~/.ssh/id_ed25519.pub"
 }
 
+variable "cpus" {
+  description = "Default CPU of the VM"
+  type        = string
+  default     = "6"
+}
+
+variable "ram" {
+  description = "Default RAM of the VM"
+  type        = string
+  default     = "4096"
+}
+
 variable "disk_size" {
   description = "Disk size of the VM to build"
   type        = string