diff --git a/proxmox/terraform/modules/node/main.tf b/proxmox/terraform/modules/node/main.tf
--- a/proxmox/terraform/modules/node/main.tf
+++ b/proxmox/terraform/modules/node/main.tf
@@ -13,20 +13,20 @@
     memory            = "${var.memory}"
     # boot machine when hypervirsor starts
     onboot            = true
-    # cloud-init setup
+    #### cloud-init setup
     os_type           = "cloud-init"
-    # ciuser - User name to change ssh keys and password for instead of the
-    # image’s configured default user.
-    ciuser            = "${var.user_admin}"
-    ssh_user          = "${var.user_admin}"
-    # sshkeys - public ssh keys, one per line
-    sshkeys           = "${var.user_admin_ssh_public_key}"
+    # ciuser - User name to change to use when connecting
+    ciuser            = "${var.config["user_admin"]}"
+    ssh_user          = "${var.config["user_admin"]}"
+    # sshkeys - public ssh key to use when connecting
+    sshkeys           = "${var.config["user_admin_ssh_public_key"]}"
     # searchdomain - Sets DNS search domains for a container.
-    searchdomain      = "${var.domain}"
+    searchdomain      = "${var.config["domain"]}"
     # nameserver - Sets DNS server IP address for a container.
-    nameserver        = "${var.dns}"
+    nameserver        = "${var.config["dns"]}"
     # ipconfig0 - [gw =] [,ip=<IPv4Format/CIDR>]
-    ipconfig0         = "ip=${var.network["ip"]}/24,gw=${var.gateway_ip}"
+    ipconfig0         = "ip=${var.network["ip"]}/24,gw=${var.config["gateway_ip"]}"
+    ####
     disk {
         id           = 0
         type         = "virtio"
@@ -41,11 +41,12 @@
         macaddr = "${lookup(var.network, "macaddr", "")}"
     }
 
-    # Delegate to puppet at the end of the provisioning the software setup
+    #### provisioning: (creation time only) connect through ssh
+    # Let puppet do its install
     provisioner "remote-exec" {
         inline = [
             "sed -i 's/127.0.1.1/${var.network["ip"]}/g' /etc/hosts",
-            "puppet agent --server ${var.puppet_master} --environment=${var.puppet_environment} --waitforcert 60 --test || echo 'Node provisionned!'",
+            "puppet agent --server ${var.config["puppet_master"]} --environment=${var.config["puppet_environment"]} --waitforcert 60 --test || echo 'Node provisionned!'",
         ]
     }
 }
diff --git a/proxmox/terraform/modules/node/outputs.tf b/proxmox/terraform/modules/node/outputs.tf
--- a/proxmox/terraform/modules/node/outputs.tf
+++ b/proxmox/terraform/modules/node/outputs.tf
@@ -2,7 +2,7 @@
     value = <<EOF
 
 hostname: ${proxmox_vm_qemu.node.name}
-fqdn: ${proxmox_vm_qemu.node.name}.${var.domain}
+fqdn: ${proxmox_vm_qemu.node.name}.${var.config["domain"]}
 network: ${proxmox_vm_qemu.node.ipconfig0} macaddr=${lookup(proxmox_vm_qemu.node.network[0], "macaddr")}
 EOF
 }
diff --git a/proxmox/terraform/modules/node/variables.tf b/proxmox/terraform/modules/node/variables.tf
--- a/proxmox/terraform/modules/node/variables.tf
+++ b/proxmox/terraform/modules/node/variables.tf
@@ -52,48 +52,7 @@
      }
 }
 
-#### Below, variables are duplicated (/me is sad, don't know how to avoid it
-#### for now)
-
-variable "domain" {
-    description = "DNS zone for the staging area"
-    type        = "string"
-    default     = "internal.staging.swh.network"
-}
-
-variable "puppet_environment" {
-    description = "Puppet environment to use (swh-site's git branch)"
-    type        = "string"
-    default     = "new_staging"
-}
-
-variable "puppet_master" {
-    description = "Puppet master FQDN"
-    type        = "string"
-    default     = "pergamon.internal.softwareheritage.org"
-}
-
-variable "dns" {
-    description = "DNS server ip"
-    type        = "string"
-    default     = "192.168.100.29"
-}
-
-variable "gateway_ip" {
-    description = "Staging network gateway ip"
-    type        = "string"
-    default     = "192.168.128.1"
-}
-
-variable "user_admin" {
-    description = "User admin to use for managing the node"
-    type        = "string"
-    default     = "root"
-}
-
-# define input variables for the modules
-# `pass search terraform-proxmox` in credential store
-variable "user_admin_ssh_public_key" {
-  type    = "string"
-  default = "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDVKCfpeIMg7GS3Pk03ZAcBWAeDZ+AvWk2k/pPY0z8MJ3YAbqZkRtSK7yaDgJV6Gro7nn/TxdJLo2jEzzWvlC8d8AEzhZPy5Z/qfVVjqBTBM4H5+e+TItAHFfaY5+0WvIahxcfsfaq70MWfpJhszAah3ThJ4mqzYaw+dkr42+a7Gx3Ygpb/m2dpnFnxvXdcuAJYStmHKU5AWGWWM+Fm50/fdMqUfNd8MbKhkJt5ihXQmZWMOt7ls4N8i5NZWnS9YSWow8X/ENOEqCRN9TyRkc+pPS0w9DNi0BCsWvSRJOkyvQ6caEnKWlNoywCmM1AlIQD3k4RUgRWe0vqg/UKPpH3Z root@terraform"
+variable "config" {
+    description = "Local config to avoid duplication from the main module"
+    type = "map"
 }
diff --git a/proxmox/terraform/staging.tf b/proxmox/terraform/staging.tf
--- a/proxmox/terraform/staging.tf
+++ b/proxmox/terraform/staging.tf
@@ -9,7 +9,25 @@
     # in a shell (see README): source ./setup.sh
 }
 
-# define the staging network gateway
+
+# Default configuration passed along module calls
+# (There is no other way to avoid duplication)
+locals {
+    config = {
+        dns                       = "${var.dns}"
+        domain                    = "${var.domain}"
+        puppet_environment        = "${var.puppet_environment}"
+        puppet_master             = "${var.puppet_master}"
+        gateway_ip                = "${var.gateway_ip}"
+        user_admin                = "${var.user_admin}"
+        user_admin_ssh_public_key = "${var.user_admin_ssh_public_key}"
+    }
+}
+
+# Define the staging network gateway
+# FIXME: Find a way to reuse the module "node"
+# Main difference between node in module and this: gateway define 2 network
+# interfaces
 resource "proxmox_vm_qemu" "gateway" {
     name              = "gateway"
     desc              = "staging gateway node"
@@ -80,6 +98,7 @@
 
 module "storage0" {
     source      = "./modules/node"
+    config      = "${local.config}"
 
     hostname    = "storage0"
     description = "swh storage services"
@@ -97,6 +116,7 @@
 
 module "db0" {
     source      = "./modules/node"
+    config      = "${local.config}"
 
     hostname    = "db0"
     description = "swh db"