diff --git a/.terraform.lock.hcl b/.terraform.lock.hcl
index fde5e4f..8ae7425 100644
--- a/.terraform.lock.hcl
+++ b/.terraform.lock.hcl
@@ -19,6 +19,24 @@ provider "registry.terraform.io/hashicorp/null" {
   ]
 }
 
+provider "registry.terraform.io/hashicorp/random" {
+  version = "3.1.0"
+  hashes = [
+    "h1:BZMEPucF+pbu9gsPk0G0BHx7YP04+tKdq2MrRDF1EDM=",
+    "zh:2bbb3339f0643b5daa07480ef4397bd23a79963cc364cdfbb4e86354cb7725bc",
+    "zh:3cd456047805bf639fbf2c761b1848880ea703a054f76db51852008b11008626",
+    "zh:4f251b0eda5bb5e3dc26ea4400dba200018213654b69b4a5f96abee815b4f5ff",
+    "zh:7011332745ea061e517fe1319bd6c75054a314155cb2c1199a5b01fe1889a7e2",
+    "zh:738ed82858317ccc246691c8b85995bc125ac3b4143043219bd0437adc56c992",
+    "zh:7dbe52fac7bb21227acd7529b487511c91f4107db9cc4414f50d04ffc3cab427",
+    "zh:a3a9251fb15f93e4cfc1789800fc2d7414bbc18944ad4c5c98f466e6477c42bc",
+    "zh:a543ec1a3a8c20635cf374110bd2f87c07374cf2c50617eee2c669b3ceeeaa9f",
+    "zh:d9ab41d556a48bd7059f0810cf020500635bfc696c9fc3adab5ea8915c1d886b",
+    "zh:d9e13427a7d011dbd654e591b0337e6074eef8c3b9bb11b2e39eaaf257044fd7",
+    "zh:f7605bd1437752114baf601bdf6931debe6dc6bfe3006eb7e9bb9080931dca8a",
+  ]
+}
+
 provider "registry.terraform.io/hashicorp/template" {
   version = "2.2.0"
   hashes = [
diff --git a/README.md b/README.md
index c611ef5..64f152a 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ This Terraform module can be used to create cheap and disposable development mac
 ## Examples
 
 * [Full-featured development instance on a Scaleway DEV1-S instance running Ubuntu 20.04](examples/ubuntu_dev1-s_full)
+* [k3s cluster on 3 Scaleway DEV1-S instances running Debian Buster](examples/debian_dev1-s_k3s)
 
 ## Prerequisites
 
diff --git a/cloud-init-user-data b/cloud-init-user-data
index b59f02e..40cc208 100644
--- a/cloud-init-user-data
+++ b/cloud-init-user-data
@@ -45,6 +45,10 @@ runcmd:
   - 'apt-get update'
   - 'apt-get install -y docker-ce docker-ce-cli containerd.io'
 %{endif~}
+%{if feature_k3s ~}
+# install K3S
+  - 'curl -sfL https://get.k3s.io | sh -s %{if node_index == "0" ~}server --tls-san ${public_ip} %{else~}agent --server https://${first_public_ip}:6443 %{endif~} --token ${k3s_token}'
+%{endif~}
 %{if feature_nvm ~}
 # install NVM
   - 'runuser -l ${user} -c "curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/$(curl -s https://api.github.com/repos/nvm-sh/nvm/releases/latest | jq -r .tag_name)/install.sh | bash"'
diff --git a/examples/debian_dev1-s_k3s/.terraform.lock.hcl b/examples/debian_dev1-s_k3s/.terraform.lock.hcl
new file mode 100644
index 0000000..1653212
--- /dev/null
+++ b/examples/debian_dev1-s_k3s/.terraform.lock.hcl
@@ -0,0 +1,76 @@
+# This file is maintained automatically by "terraform init".
+# Manual edits may be lost in future updates.
+
+provider "registry.terraform.io/hashicorp/null" {
+  version = "3.1.0"
+  hashes = [
+    "h1:vpC6bgUQoJ0znqIKVFevOdq+YQw42bRq0u+H3nto8nA=",
+    "zh:02a1675fd8de126a00460942aaae242e65ca3380b5bb192e8773ef3da9073fd2",
+    "zh:53e30545ff8926a8e30ad30648991ca8b93b6fa496272cd23b26763c8ee84515",
+    "zh:5f9200bf708913621d0f6514179d89700e9aa3097c77dac730e8ba6e5901d521",
+    "zh:9ebf4d9704faba06b3ec7242c773c0fbfe12d62db7d00356d4f55385fc69bfb2",
+    "zh:a6576c81adc70326e4e1c999c04ad9ca37113a6e925aefab4765e5a5198efa7e",
+    "zh:a8a42d13346347aff6c63a37cda9b2c6aa5cc384a55b2fe6d6adfa390e609c53",
+    "zh:c797744d08a5307d50210e0454f91ca4d1c7621c68740441cf4579390452321d",
+    "zh:cecb6a304046df34c11229f20a80b24b1603960b794d68361a67c5efe58e62b8",
+    "zh:e1371aa1e502000d9974cfaff5be4cfa02f47b17400005a16f14d2ef30dc2a70",
+    "zh:fc39cc1fe71234a0b0369d5c5c7f876c71b956d23d7d6f518289737a001ba69b",
+    "zh:fea4227271ebf7d9e2b61b89ce2328c7262acd9fd190e1fd6d15a591abfa848e",
+  ]
+}
+
+provider "registry.terraform.io/hashicorp/random" {
+  version = "3.1.0"
+  hashes = [
+    "h1:BZMEPucF+pbu9gsPk0G0BHx7YP04+tKdq2MrRDF1EDM=",
+    "zh:2bbb3339f0643b5daa07480ef4397bd23a79963cc364cdfbb4e86354cb7725bc",
+    "zh:3cd456047805bf639fbf2c761b1848880ea703a054f76db51852008b11008626",
+    "zh:4f251b0eda5bb5e3dc26ea4400dba200018213654b69b4a5f96abee815b4f5ff",
+    "zh:7011332745ea061e517fe1319bd6c75054a314155cb2c1199a5b01fe1889a7e2",
+    "zh:738ed82858317ccc246691c8b85995bc125ac3b4143043219bd0437adc56c992",
+    "zh:7dbe52fac7bb21227acd7529b487511c91f4107db9cc4414f50d04ffc3cab427",
+    "zh:a3a9251fb15f93e4cfc1789800fc2d7414bbc18944ad4c5c98f466e6477c42bc",
+    "zh:a543ec1a3a8c20635cf374110bd2f87c07374cf2c50617eee2c669b3ceeeaa9f",
+    "zh:d9ab41d556a48bd7059f0810cf020500635bfc696c9fc3adab5ea8915c1d886b",
+    "zh:d9e13427a7d011dbd654e591b0337e6074eef8c3b9bb11b2e39eaaf257044fd7",
+    "zh:f7605bd1437752114baf601bdf6931debe6dc6bfe3006eb7e9bb9080931dca8a",
+  ]
+}
+
+provider "registry.terraform.io/hashicorp/template" {
+  version = "2.2.0"
+  hashes = [
+    "h1:94qn780bi1qjrbC3uQtjJh3Wkfwd5+tTtJHOb7KTg9w=",
+    "zh:01702196f0a0492ec07917db7aaa595843d8f171dc195f4c988d2ffca2a06386",
+    "zh:09aae3da826ba3d7df69efeb25d146a1de0d03e951d35019a0f80e4f58c89b53",
+    "zh:09ba83c0625b6fe0a954da6fbd0c355ac0b7f07f86c91a2a97849140fea49603",
+    "zh:0e3a6c8e16f17f19010accd0844187d524580d9fdb0731f675ffcf4afba03d16",
+    "zh:45f2c594b6f2f34ea663704cc72048b212fe7d16fb4cfd959365fa997228a776",
+    "zh:77ea3e5a0446784d77114b5e851c970a3dde1e08fa6de38210b8385d7605d451",
+    "zh:8a154388f3708e3df5a69122a23bdfaf760a523788a5081976b3d5616f7d30ae",
+    "zh:992843002f2db5a11e626b3fc23dc0c87ad3729b3b3cff08e32ffb3df97edbde",
+    "zh:ad906f4cebd3ec5e43d5cd6dc8f4c5c9cc3b33d2243c89c5fc18f97f7277b51d",
+    "zh:c979425ddb256511137ecd093e23283234da0154b7fa8b21c2687182d9aea8b2",
+  ]
+}
+
+provider "registry.terraform.io/scaleway/scaleway" {
+  version     = "2.1.0"
+  constraints = "~> 2.0"
+  hashes = [
+    "h1:IfyjOGvS3B9fsA1s4XSr0ajVlufSMq/bbqAX8DODdcY=",
+    "zh:0de647cba4e5a5973984a0e223aa5b6dc06022a0ed9ddc491d4cc1543d4516f0",
+    "zh:1400a65eaacab234db4734966e79d8891def0e5b9a10f7bad34efcfd6b42ac78",
+    "zh:1441133bdae2cbaf34203d831a49c535177533023281e1f884bc699adcdcd94d",
+    "zh:1d3efd87c78f6ab27e4df189510eb84e0b9f1f4eb0d8c0b983e6795824ceb6b3",
+    "zh:30db64a0dcc43784062ae09dc2b2741fba657577804e7f130aeca2bed8ee6f8c",
+    "zh:359d420de3ca104c73acd6a0d84af445ee9d6a2759b7131a4f378e786f8cc027",
+    "zh:6f6a1781251881309289f4ce2aa4289a8715f33ac50603dcb9beae047450892f",
+    "zh:731de7d68e140f21004506a3afdf7c1af0e285c986e98c53ebde113deb5d4b94",
+    "zh:90f4fcdce03b46da0b1da88888d9998a61f2f5f50566f88693bc98bdff9117ff",
+    "zh:a88b770b34cddf506c0c38c98dd124dc7388c6c1baafe546f60f09ba6a1e5691",
+    "zh:ae7f8250c07e38e86e15bb4f27de57756d49914ee0146298dd0b6f140380a62c",
+    "zh:cc3f1ad2cb22e50a578cdda1e02bf94f8ce85cebf691263e4b7da8e864e3195d",
+    "zh:cfb66ebd80a07f160da683d05c6ce03faa2c3218998eaa2df7b1e745026bd4b8",
+  ]
+}
diff --git a/examples/debian_dev1-s_k3s/README.md b/examples/debian_dev1-s_k3s/README.md
new file mode 100644
index 0000000..2cb8106
--- /dev/null
+++ b/examples/debian_dev1-s_k3s/README.md
@@ -0,0 +1,62 @@
+# Example : k3s cluster on 3 Scaleway DEV1-S instances running Debian Buster
+
+Read the [module documentation](../../README.md) for further explanation.
+
+## Prerequisites
+
+* Terraform 1.0+
+* A [Scaleway project](https://console.scaleway.com/project/) (default project is fine but [creating a new one](https://www.scaleway.com/en/docs/scaleway-project/) is encouraged)
+* curl, OpenSSH
+* [jq](https://stedolan.github.io/jq/) (only for magic commands)
+
+## Introduction
+
+1. Create your SSH key pair and [add the public key in authorized keys of your Scleway project in the Scaleway console](https://console.scaleway.com/project/credentials)
+
+```
+ssh-keygen -t rsa -b 4096 -q -C 'scaleway' -N '' -f ~/.ssh/scaleway
+```
+
+> if using an existing SSH key, it is assumed its name is *~/.ssh/scaleway*
+
+2. [Retrieve your project credentials](https://console.scaleway.com/project/credentials) and export them:
+
+```
+export SCW_DEFAULT_PROJECT_ID=<REDACTED>
+export SCW_ACCESS_KEY=<REDACTED>
+export SCW_SECRET_KEY=<REDACTED>
+export SCW_DEFAULT_REGION=fr-par
+export SCW_DEFAULT_ZONE=fr-par-1
+```
+
+## Usage
+
+1. Retrieve the (root) Terraform module of this example
+
+```
+mkdir debian_dev1-s_k3s
+cd debian_dev1-s_k3s
+curl -fsSL -O https://raw.githubusercontent.com/debovema/terraform-scaleway-dev-instance/main/examples/debian_dev1-s_k3s/main.tf
+```
+
+2. Initialize Terraform
+
+```
+terraform init
+```
+
+3. Apply default plan
+```
+terraform apply
+```
+
+4. SSH to the (first) created host
+
+```
+eval `terraform output --json ssh_commands | jq -r ".[0]"`
+```
+
+> To display the SSH command used to connect:
+> ```
+> echo $(terraform output --json ssh_commands | jq -r ".[0]")
+> ```
\ No newline at end of file
diff --git a/examples/debian_dev1-s_k3s/main.tf b/examples/debian_dev1-s_k3s/main.tf
new file mode 100644
index 0000000..acc627a
--- /dev/null
+++ b/examples/debian_dev1-s_k3s/main.tf
@@ -0,0 +1,30 @@
+//--------------------------------------------------------------------
+// Variables
+variable "dev_ssh_key_file" { default = "~/.ssh/scaleway" }
+variable "dev_username" { default = "developer" }
+
+//--------------------------------------------------------------------
+// Modules
+module "dev" {
+  source  = "app.terraform.io/scwdev/dev/scaleway"
+  version = "0.0.3"
+
+  node_count   = 3
+  server_image = "debian_buster"
+  server_type  = "DEV1-S"
+
+  feature_k3s  = "true"
+  feature_omz  = "true"
+  ssh_key_file = var.dev_ssh_key_file
+  username     = var.dev_username
+}
+
+//--------------------------------------------------------------------
+// Outputs
+output "public_ips" {
+  value = module.dev.public_ips
+}
+
+output "ssh_commands" {
+  value = module.dev.ssh_commands
+}
diff --git a/examples/ubuntu_dev1-s_full/main.tf b/examples/ubuntu_dev1-s_full/main.tf
index 2e7bb97..5dae76b 100644
--- a/examples/ubuntu_dev1-s_full/main.tf
+++ b/examples/ubuntu_dev1-s_full/main.tf
@@ -9,12 +9,16 @@ module "dev" {
   source  = "app.terraform.io/scwdev/dev/scaleway"
   version = "0.0.2"
 
+  server_image = "ubuntu_focal"
+  server_type  = "DEV1-S"
+
+  ssh_key_file = var.dev_ssh_key_file
+  username = var.dev_username
+
   feature_docker = "true"
   feature_nvm = "true"
   feature_omz = "true"
   feature_sdkman = "true"
-  ssh_key_file = var.dev_ssh_key_file
-  username = var.dev_username
 }
 
 //--------------------------------------------------------------------
diff --git a/main.tf b/main.tf
index bcd13e0..02abcb5 100644
--- a/main.tf
+++ b/main.tf
@@ -1,27 +1,48 @@
 data "template_file" "userdata" {
+  count    = var.node_count
   template = file("${path.module}/cloud-init-user-data")
 
   vars = {
-    distrib        = regex("^ubuntu|debian", var.server_image)
-    user           = var.username
+    node_index      = count.index
+    distrib         = regex("^ubuntu|debian", var.server_image)
+    user            = var.username
+    first_public_ip = scaleway_instance_ip.node_public_ip[0].address
+    public_ip       = scaleway_instance_ip.node_public_ip[count.index].address
+
     feature_docker = var.feature_docker
+    feature_k3s    = var.feature_k3s
+    k3s_token      = var.feature_k3s ? random_password.k3s_token[0].result : ""
     feature_nvm    = var.feature_nvm
     feature_omz    = var.feature_omz
     feature_sdkman = var.feature_sdkman
   }
 }
 
+resource "random_password" "k3s_token" {
+  count = var.feature_k3s ? 1 : 0
+
+  length  = 32
+  special = false
+  upper   = false
+  lower   = true
+  number  = true
+}
+
+resource "scaleway_instance_ip" "node_public_ip" {
+  count = var.node_count
+}
+
 resource "scaleway_instance_server" "node" {
   count = var.node_count
 
   name = "${var.node_name}-${count.index}"
 
-  image             = var.server_image
-  type              = var.server_type
-  enable_dynamic_ip = true
+  image = var.server_image
+  type  = var.server_type
+  ip_id = scaleway_instance_ip.node_public_ip[count.index].id
 
   # initialization sequence
-  cloud_init = data.template_file.userdata.rendered
+  cloud_init = data.template_file.userdata[count.index].rendered
 }
 
 resource "null_resource" "wait_for_init" {
@@ -44,4 +65,4 @@ resource "null_resource" "wait_for_init" {
   provisioner "local-exec" {
     command = "sleep 80" # wait more than 1 minute for the instance to be rebooted
   }
-}
\ No newline at end of file
+}
diff --git a/variables.tf b/variables.tf
index ad7b8d0..7bc04f7 100644
--- a/variables.tf
+++ b/variables.tf
@@ -42,6 +42,12 @@ variable "feature_omz" {
   default     = false
 }
 
+variable "feature_k3s" {
+  type        = bool
+  description = "Whether to install K3S or not"
+  default     = false
+}
+
 variable "feature_docker" {
   type        = bool
   description = "Whether to install Docker or not"