From 49b182878b6f00235191f602bbd56941fcfb1466 Mon Sep 17 00:00:00 2001
From: Vargha Csongor <Culisa1023@gmail.com>
Date: Sun, 3 Mar 2024 12:39:01 +0100
Subject: [PATCH] add half done self managed version

---
 .github/workflows/ci.yml                 |  40 +++
 .gitignore                               |   2 +
 self-managed/README.md                   |   0
 self-managed/data.tf                     |  85 +++++
 self-managed/example/main.tf             |  66 ++++
 self-managed/example/provider.tf         |  17 +
 self-managed/files/k3s-install-agent.sh  | 267 ++++++++++++++
 self-managed/files/k3s-install-server.sh | 430 +++++++++++++++++++++++
 self-managed/iam.tf                      |  28 ++
 self-managed/k3s-servers.tf              |  37 ++
 self-managed/k3s-workers.tf              | 107 ++++++
 self-managed/k3slb.tf                    | 141 ++++++++
 self-managed/lb.tf                       |  54 +++
 self-managed/locals.tf                   |   3 +
 self-managed/network.tf                  |  63 ++++
 self-managed/nsg.tf                      | 151 ++++++++
 self-managed/oci/provider.tf             |  10 +
 self-managed/output.tf                   |  17 +
 self-managed/security.tf                 |  43 +++
 self-managed/template.tf                 | 144 ++++++++
 self-managed/terraform.tf                |   8 +
 self-managed/vars.tf                     | 238 +++++++++++++
 22 files changed, 1951 insertions(+)
 create mode 100644 .github/workflows/ci.yml
 create mode 100644 self-managed/README.md
 create mode 100644 self-managed/data.tf
 create mode 100644 self-managed/example/main.tf
 create mode 100644 self-managed/example/provider.tf
 create mode 100644 self-managed/files/k3s-install-agent.sh
 create mode 100644 self-managed/files/k3s-install-server.sh
 create mode 100644 self-managed/iam.tf
 create mode 100644 self-managed/k3s-servers.tf
 create mode 100644 self-managed/k3s-workers.tf
 create mode 100644 self-managed/k3slb.tf
 create mode 100644 self-managed/lb.tf
 create mode 100644 self-managed/locals.tf
 create mode 100644 self-managed/network.tf
 create mode 100644 self-managed/nsg.tf
 create mode 100644 self-managed/oci/provider.tf
 create mode 100644 self-managed/output.tf
 create mode 100644 self-managed/security.tf
 create mode 100644 self-managed/template.tf
 create mode 100644 self-managed/terraform.tf
 create mode 100644 self-managed/vars.tf

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..dc1b309
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,40 @@
+name: Terraform CI
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - v*
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  validate:
+    name: Validate
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./example
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v1
+
+      - name: Run a Terraform init
+        uses: docker://hashicorp/terraform:light
+        with:
+          entrypoint: terraform
+          args: init
+
+      - name: Run a Terraform validate
+        uses: docker://hashicorp/terraform:light
+        with:
+          entrypoint: terraform
+          args: validate
+
+      - name: Run a Terraform fmt
+        uses: docker://hashicorp/terraform:light
+        with:
+          entrypoint: terraform
+          args: fmt  --recursive -check=true --diff ../
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 22fca49..41084e2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,3 +33,5 @@ override.tf.json
 # Ignore CLI configuration files
 .terraformrc
 terraform.rc
+*tf.plan
+*.terraform.lock.hcl
diff --git a/self-managed/README.md b/self-managed/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/self-managed/data.tf b/self-managed/data.tf
new file mode 100644
index 0000000..d06303d
--- /dev/null
+++ b/self-managed/data.tf
@@ -0,0 +1,85 @@
+resource "random_password" "k3s_token" {
+  length  = 55
+  special = false
+}
+
+data "cloudinit_config" "k3s_server_tpl" {
+  gzip          = true
+  base64_encode = true
+
+  part {
+    content_type = "text/x-shellscript"
+    content = templatefile("${path.module}/files/k3s-install-server.sh", {
+      k3s_version                       = var.k3s_version,
+      k3s_subnet                        = var.k3s_subnet,
+      k3s_token                         = random_password.k3s_token.result,
+      is_k3s_server                     = true,
+      disable_ingress                   = var.disable_ingress,
+      ingress_controller                = var.ingress_controller,
+      nginx_ingress_release             = var.nginx_ingress_release,
+      istio_release                     = var.istio_release,
+      install_certmanager               = var.install_certmanager,
+      certmanager_release               = var.certmanager_release,
+      certmanager_email_address         = var.certmanager_email_address,
+      compartment_ocid                  = var.compartment_ocid,
+      availability_domain               = var.availability_domain,
+      k3s_url                           = oci_load_balancer_load_balancer.k3s_load_balancer.ip_address_details[0].ip_address,
+      k3s_tls_san                       = oci_load_balancer_load_balancer.k3s_load_balancer.ip_address_details[0].ip_address,
+      expose_kubeapi                    = var.expose_kubeapi,
+      k3s_tls_san_public                = local.public_lb_ip[0],
+      argocd_image_updater_release      = var.argocd_image_updater_release,
+      install_argocd_image_updater      = var.install_argocd_image_updater,
+      install_argocd                    = var.install_argocd,
+      argocd_release                    = var.argocd_release,
+      install_longhorn                  = var.install_longhorn,
+      longhorn_release                  = var.longhorn_release,
+      ingress_controller_http_nodeport  = var.ingress_controller_http_nodeport,
+      ingress_controller_https_nodeport = var.ingress_controller_https_nodeport,
+    })
+  }
+}
+
+data "cloudinit_config" "k3s_worker_tpl" {
+  gzip          = true
+  base64_encode = true
+
+  part {
+    content_type = "text/x-shellscript"
+    content = templatefile("${path.module}/files/k3s-install-agent.sh", {
+      k3s_version                       = var.k3s_version,
+      k3s_subnet                        = var.k3s_subnet,
+      k3s_token                         = random_password.k3s_token.result,
+      is_k3s_server                     = false,
+      disable_ingress                   = var.disable_ingress,
+      k3s_url                           = oci_load_balancer_load_balancer.k3s_load_balancer.ip_address_details[0].ip_address,
+      http_lb_port                      = var.http_lb_port,
+      install_longhorn                  = var.install_longhorn,
+      https_lb_port                     = var.https_lb_port,
+      ingress_controller_http_nodeport  = var.ingress_controller_http_nodeport,
+      ingress_controller_https_nodeport = var.ingress_controller_https_nodeport,
+    })
+  }
+}
+
+data "oci_core_instance_pool_instances" "k3s_workers_instances" {
+  compartment_id   = var.compartment_ocid
+  instance_pool_id = oci_core_instance_pool.k3s_workers.id
+}
+
+data "oci_core_instance" "k3s_workers_instances_ips" {
+  count       = var.k3s_worker_pool_size
+  instance_id = data.oci_core_instance_pool_instances.k3s_workers_instances.instances[count.index].id
+}
+
+data "oci_core_instance_pool_instances" "k3s_servers_instances" {
+  depends_on = [
+    oci_core_instance_pool.k3s_servers,
+  ]
+  compartment_id   = var.compartment_ocid
+  instance_pool_id = oci_core_instance_pool.k3s_servers.id
+}
+
+data "oci_core_instance" "k3s_servers_instances_ips" {
+  count       = var.k3s_server_pool_size
+  instance_id = data.oci_core_instance_pool_instances.k3s_servers_instances.instances[count.index].id
+}
diff --git a/self-managed/example/main.tf b/self-managed/example/main.tf
new file mode 100644
index 0000000..1e8332a
--- /dev/null
+++ b/self-managed/example/main.tf
@@ -0,0 +1,66 @@
+variable "compartment_ocid" {}
+variable "tenancy_ocid" {}
+variable "user_ocid" {}
+variable "fingerprint" {}
+variable "private_key_path" {}
+variable "availability_domain" {}
+variable "my_public_ip_cidr" {}
+variable "cluster_name" {}
+variable "agent_os_image_id" {}
+variable "server_os_image_id" {}
+variable "certmanager_email_address" {}
+variable "region" {}
+variable "public_key_path" {}
+
+variable "k3s_server_pool_size" {
+  default = 2
+}
+variable "k3s_worker_pool_size" {
+  default = 2
+}
+variable "k3s_extra_worker_node" {
+  default = false
+}
+variable "expose_kubeapi" {
+  default = false
+}
+variable "environment" {
+  default = "prod"
+}
+
+module "k3s_cluster" {
+  # k3s_version               = "v1.23.8+k3s2" # Fix kubectl exec failure
+  # k3s_version               = "v1.24.4+k3s1" # Kubernetes version compatible with longhorn
+  region                    = var.region
+  availability_domain       = var.availability_domain
+  tenancy_ocid              = var.tenancy_ocid
+  compartment_ocid          = var.compartment_ocid
+  my_public_ip_cidr         = var.my_public_ip_cidr
+  cluster_name              = var.cluster_name
+  environment               = var.environment
+  agent_os_image_id         = var.agent_os_image_id
+  server_os_image_id        = var.server_os_image_id
+  certmanager_email_address = var.certmanager_email_address
+  certmanager_release       = "v1.13.3"
+  k3s_server_pool_size      = var.k3s_server_pool_size
+  k3s_worker_pool_size      = var.k3s_worker_pool_size
+  k3s_extra_worker_node     = var.k3s_extra_worker_node
+  expose_kubeapi            = var.expose_kubeapi
+  public_key_path           = var.public_key_path
+  install_longhorn          = false
+  # fault_domains = [ "FAULT-DOMAIN-3" ]
+  ingress_controller = "traefik2"
+  source             = "../"
+}
+
+output "k3s_servers_ips" {
+  value = module.k3s_cluster.k3s_servers_ips
+}
+
+output "k3s_workers_ips" {
+  value = module.k3s_cluster.k3s_workers_ips
+}
+
+output "public_lb_ip" {
+  value = module.k3s_cluster.public_lb_ip
+}
diff --git a/self-managed/example/provider.tf b/self-managed/example/provider.tf
new file mode 100644
index 0000000..37045a9
--- /dev/null
+++ b/self-managed/example/provider.tf
@@ -0,0 +1,17 @@
+terraform {
+  required_providers {
+    oci = {
+      source  = "oracle/oci"
+      version = ">= 4.64.0"
+    }
+  }
+}
+
+provider "oci" {
+  tenancy_ocid         = var.tenancy_ocid
+  user_ocid            = var.user_ocid
+  private_key_path = pathexpand(var.private_key_path)
+  fingerprint          = var.fingerprint
+  region               = var.region
+  retry_duration_seconds = 120
+}
diff --git a/self-managed/files/k3s-install-agent.sh b/self-managed/files/k3s-install-agent.sh
new file mode 100644
index 0000000..f838435
--- /dev/null
+++ b/self-managed/files/k3s-install-agent.sh
@@ -0,0 +1,267 @@
+#!/bin/bash
+
+check_os() {
+  name=$(cat /etc/os-release | grep ^NAME= | sed 's/"//g')
+  clean_name=$${name#*=}
+
+  version=$(cat /etc/os-release | grep ^VERSION_ID= | sed 's/"//g')
+  clean_version=$${version#*=}
+  major=$${clean_version%.*}
+  minor=$${clean_version#*.}
+  
+  if [[ "$clean_name" == "Ubuntu" ]]; then
+    operating_system="ubuntu"
+  elif [[ "$clean_name" == "Oracle Linux Server" ]]; then
+    operating_system="oraclelinux"
+  else
+    operating_system="undef"
+  fi
+
+  echo "K3S install process running on: "
+  echo "OS: $operating_system"
+  echo "OS Major Release: $major"
+  echo "OS Minor Release: $minor"
+}
+
+install_oci_cli_ubuntu(){
+  DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y python3 python3-pip nginx
+  systemctl enable nginx
+  pip install oci-cli
+}
+
+install_oci_cli_oracle(){
+  if [[ $major -eq 9 ]]; then
+    dnf -y install oraclelinux-developer-release-el9
+    dnf -y install python39-oci-cli python3-jinja2 nginx-all-modules
+  else
+    dnf -y install oraclelinux-developer-release-el8
+    dnf -y module enable nginx:1.20 python36:3.6
+    dnf -y install python36-oci-cli python3-jinja2 nginx-all-modules
+  fi
+}
+
+wait_lb() {
+while [ true ]
+do
+  curl --output /dev/null --silent -k https://${k3s_url}:6443
+  if [[ "$?" -eq 0 ]]; then
+    break
+  fi
+  sleep 5
+  echo "wait for LB"
+done
+}
+
+check_os
+
+if [[ "$operating_system" == "ubuntu" ]]; then
+  # Disable firewall 
+  /usr/sbin/netfilter-persistent stop
+  /usr/sbin/netfilter-persistent flush
+
+  systemctl stop netfilter-persistent.service
+  systemctl disable netfilter-persistent.service
+
+  # END Disable firewall
+
+  apt-get update
+  apt-get install -y software-properties-common jq
+  DEBIAN_FRONTEND=noninteractive apt-get upgrade -y
+
+  %{ if ! disable_ingress }
+  install_oci_cli_ubuntu
+  %{ endif }
+  
+  # Fix /var/log/journal dir size
+  echo "SystemMaxUse=100M" >> /etc/systemd/journald.conf
+  echo "SystemMaxFileSize=100M" >> /etc/systemd/journald.conf
+  systemctl restart systemd-journald
+fi
+
+if [[ "$operating_system" == "oraclelinux" ]]; then
+  # Disable firewall
+  systemctl disable --now firewalld
+  # END Disable firewall
+
+  # Fix iptables/SELinux bug
+  echo '(allow iptables_t cgroup_t (dir (ioctl)))' > /root/local_iptables.cil
+  semodule -i /root/local_iptables.cil
+
+  dnf -y update
+  dnf -y install jq curl
+
+  %{ if ! disable_ingress }
+  install_oci_cli_oracle
+  %{ endif }
+
+  # Nginx Selinux Fix
+  setsebool httpd_can_network_connect on -P
+fi
+
+k3s_install_params=()
+
+%{ if k3s_subnet != "default_route_table" } 
+local_ip=$(ip -4 route ls ${k3s_subnet} | grep -Po '(?<=src )(\S+)')
+flannel_iface=$(ip -4 route ls ${k3s_subnet} | grep -Po '(?<=dev )(\S+)')
+
+k3s_install_params+=("--node-ip $local_ip")
+k3s_install_params+=("--flannel-iface $flannel_iface")
+%{ endif }
+
+if [[ "$operating_system" == "oraclelinux" ]]; then
+  k3s_install_params+=("--selinux")
+fi
+
+INSTALL_PARAMS="$${k3s_install_params[*]}"
+
+%{ if k3s_version == "latest" }
+K3S_VERSION=$(curl --silent https://api.github.com/repos/k3s-io/k3s/releases/latest | jq -r '.name')
+%{ else }
+K3S_VERSION="${k3s_version}"
+%{ endif }
+
+wait_lb
+
+until (curl -sfL https://get.k3s.io | INSTALL_K3S_VERSION=$K3S_VERSION K3S_TOKEN=${k3s_token} K3S_URL=https://${k3s_url}:6443 sh -s - $INSTALL_PARAMS); do
+  echo 'k3s did not install correctly'
+  sleep 2
+done
+
+proxy_protocol_stuff(){
+cat << 'EOF' > /root/find_ips.sh
+export OCI_CLI_AUTH=instance_principal
+private_ips=()
+
+# Fetch the OCID of all the running instances in OCI and store to an array
+instance_ocids=$(oci search resource structured-search --query-text "QUERY instance resources where lifeCycleState='RUNNING'"  --query 'data.items[*].identifier' --raw-output | jq -r '.[]' ) 
+
+# Iterate through the array to fetch details of each instance one by one
+for val in $${instance_ocids[@]} ; do
+  
+  echo $val
+
+  # Get name of the instance
+  instance_name=$(oci compute instance get --instance-id $val --raw-output --query 'data."display-name"')
+  echo $instance_name
+
+
+  # Get Public Ip of the instance
+  public_ip=$(oci compute instance list-vnics --instance-id $val --raw-output --query 'data[0]."public-ip"')
+  echo $public_ip
+
+  private_ip=$(oci compute instance list-vnics --instance-id $val --raw-output --query 'data[0]."private-ip"')
+  echo $private_ip
+  private_ips+=($private_ip)
+done
+
+for i in "$${private_ips[@]}"
+do
+  echo "$i" >> /tmp/private_ips
+done
+EOF
+
+if [[ "$operating_system" == "ubuntu" ]]; then
+  NGINX_MODULE=/usr/lib/nginx/modules/ngx_stream_module.so
+  NGINX_USER=www-data
+fi
+
+if [[ "$operating_system" == "oraclelinux" ]]; then
+  NGINX_MODULE=/usr/lib64/nginx/modules/ngx_stream_module.so
+  NGINX_USER=nginx
+fi
+
+cat << EOD > /root/nginx-header.tpl
+load_module $NGINX_MODULE;
+
+user $NGINX_USER;
+worker_processes auto;
+pid /run/nginx.pid;
+
+EOD
+
+cat << 'EOF' > /root/nginx-footer.tpl
+events {
+  worker_connections 768;
+  # multi_accept on;
+}
+
+stream {
+  upstream k3s-http {
+    {% for private_ip in private_ips -%}
+    server {{ private_ip }}:${ingress_controller_http_nodeport} max_fails=3 fail_timeout=10s;
+    {% endfor -%}
+  }
+  upstream k3s-https {
+    {% for private_ip in private_ips -%}
+    server {{ private_ip }}:${ingress_controller_https_nodeport} max_fails=3 fail_timeout=10s;
+    {% endfor -%}
+  }
+
+  log_format basic '$remote_addr [$time_local] '
+    '$protocol $status $bytes_sent $bytes_received '
+    '$session_time "$upstream_addr" '
+    '"$upstream_bytes_sent" "$upstream_bytes_received" "$upstream_connect_time"';
+
+  access_log /var/log/nginx/k3s_access.log basic;
+  error_log  /var/log/nginx/k3s_error.log;
+
+  proxy_protocol on;
+
+  server {
+    listen ${https_lb_port};
+    proxy_pass k3s-https;
+    proxy_next_upstream on;
+  }
+
+  server {
+    listen ${http_lb_port};
+    proxy_pass k3s-http;
+    proxy_next_upstream on;
+  }
+}
+EOF
+
+cat /root/nginx-header.tpl /root/nginx-footer.tpl > /root/nginx.tpl
+
+cat << 'EOF' > /root/render_nginx_config.py
+from jinja2 import Template
+import os
+
+RAW_IP = open('/tmp/private_ips', 'r').readlines()
+IPS = [i.replace('\n','') for i in RAW_IP]
+
+nginx_config_template_path = '/root/nginx.tpl'
+nginx_config_path = '/etc/nginx/nginx.conf'
+
+with open(nginx_config_template_path, 'r') as handle:
+    nginx_config_template = handle.read()
+
+new_nginx_config = Template(nginx_config_template).render(
+    private_ips = IPS
+)
+
+with open(nginx_config_path, 'w') as handle:
+    handle.write(new_nginx_config)
+EOF
+
+chmod +x /root/find_ips.sh
+./root/find_ips.sh
+
+python3 /root/render_nginx_config.py
+
+nginx -t
+
+systemctl restart nginx
+}
+
+%{ if ! disable_ingress }
+proxy_protocol_stuff
+%{ endif }
+
+%{ if install_longhorn }
+if [[ "$operating_system" == "ubuntu" ]]; then
+  DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y  open-iscsi curl util-linux
+fi
+
+systemctl enable --now iscsid.service
+%{ endif }
\ No newline at end of file
diff --git a/self-managed/files/k3s-install-server.sh b/self-managed/files/k3s-install-server.sh
new file mode 100644
index 0000000..71cec84
--- /dev/null
+++ b/self-managed/files/k3s-install-server.sh
@@ -0,0 +1,430 @@
+#!/bin/bash
+
+check_os() {
+  name=$(cat /etc/os-release | grep ^NAME= | sed 's/"//g')
+  clean_name=$${name#*=}
+
+  version=$(cat /etc/os-release | grep ^VERSION_ID= | sed 's/"//g')
+  clean_version=$${version#*=}
+  major=$${clean_version%.*}
+  minor=$${clean_version#*.}
+  
+  if [[ "$clean_name" == "Ubuntu" ]]; then
+    operating_system="ubuntu"
+  elif [[ "$clean_name" == "Oracle Linux Server" ]]; then
+    operating_system="oraclelinux"
+  else
+    operating_system="undef"
+  fi
+
+  echo "K3S install process running on: "
+  echo "OS: $operating_system"
+  echo "OS Major Release: $major"
+  echo "OS Minor Release: $minor"
+}
+
+wait_lb() {
+while [ true ]
+do
+  curl --output /dev/null --silent -k https://${k3s_url}:6443
+  if [[ "$?" -eq 0 ]]; then
+    break
+  fi
+  sleep 5
+  echo "wait for LB"
+done
+}
+
+install_helm() {
+  curl -fsSL -o /root/get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
+  chmod 700 /root/get_helm.sh
+  /root/get_helm.sh
+}
+
+
+install_and_configure_traefik2() {
+  export KUBECONFIG=/etc/rancher/k3s/k3s.yaml
+
+  # Install Helm
+  install_helm
+  
+  # Add traefik helm repo
+  kubectl create ns traefik
+  helm repo add traefik https://helm.traefik.io/traefik
+  helm repo update
+
+  TRAEFIK_VALUES_FILE=/root/traefik2_values.yaml
+  render_traefik2_config
+  helm install --namespace=traefik -f $TRAEFIK_VALUES_FILE traefik traefik/traefik --kubeconfig /etc/rancher/k3s/k3s.yaml
+
+  helm repo add kubereboot https://kubereboot.github.io/charts
+  helm install kubereboot/kured --generate-name --kubeconfig /etc/rancher/k3s/k3s.yaml
+}
+
+render_traefik2_config() {
+cat << 'EOF' > "$TRAEFIK_VALUES_FILE"
+service:
+  enabled: true
+  type: NodePort
+
+# Configure ports
+ports:
+  # The name of this one can't be changed as it is used for the readiness and
+  # liveness probes, but you can adjust its config to your liking
+  traefik:
+    port: 9000
+    # Use hostPort if set.
+    # hostPort: 9000
+    #
+    # Use hostIP if set. If not set, Kubernetes will default to 0.0.0.0, which
+    # means it's listening on all your interfaces and all your IPs. You may want
+    # to set this value if you need traefik to listen on specific interface
+    # only.
+    # hostIP: 192.168.100.10
+
+    # Override the liveness/readiness port. This is useful to integrate traefik
+    # with an external Load Balancer that performs healthchecks.
+    # Default: ports.traefik.port
+    # healthchecksPort: 9000
+
+    # Override the liveness/readiness scheme. Useful for getting ping to
+    # respond on websecure entryPoint.
+    # healthchecksScheme: HTTPS
+
+    # Defines whether the port is exposed if service.type is LoadBalancer or
+    # NodePort.
+    #
+    # You SHOULD NOT expose the traefik port on production deployments.
+    # If you want to access it from outside of your cluster,
+    # use `kubectl port-forward` or create a secure ingress
+    expose: false
+    # The exposed port for this service
+    exposedPort: 9000
+    # The port protocol (TCP/UDP)
+    protocol: TCP
+  web:
+    port: 8000
+    # hostPort: 8000
+    expose: true 
+    exposedPort: 80
+    # The port protocol (TCP/UDP)
+    protocol: TCP
+    # Use nodeport if set. This is useful if you have configured Traefik in a
+    # LoadBalancer
+    nodePort: ${ingress_controller_http_nodeport}
+    # Port Redirections
+    # Added in 2.2, you can make permanent redirects via entrypoints.
+    # https://docs.traefik.io/routing/entrypoints/#redirection
+    # redirectTo: websecure
+    #
+    # Trust forwarded  headers information (X-Forwarded-*).
+    # forwardedHeaders:
+    #   trustedIPs: []
+    #   insecure: false
+    #
+    # Enable the Proxy Protocol header parsing for the entry point
+    proxyProtocol:
+      trustedIPs:
+        - 0.0.0.0/0
+        - 127.0.0.1/32
+      insecure: false
+  websecure:
+    port: 8443
+    # hostPort: 8443
+    expose: true
+    exposedPort: 443
+    # The port protocol (TCP/UDP)
+    protocol: TCP
+    nodePort: ${ingress_controller_https_nodeport}
+    # Enable HTTP/3.
+    # Requires enabling experimental http3 feature and tls.
+    # Note that you cannot have a UDP entrypoint with the same port.
+    # http3: true
+    # Set TLS at the entrypoint
+    # https://doc.traefik.io/traefik/routing/entrypoints/#tls
+    tls:
+      enabled: true
+      # this is the name of a TLSOption definition
+      options: ""
+      certResolver: ""
+      domains: []
+      # - main: example.com
+      #   sans:
+      #     - foo.example.com
+      #     - bar.example.com
+    #
+    # Trust forwarded  headers information (X-Forwarded-*).
+    # forwardedHeaders:
+    #   trustedIPs: []
+    #   insecure: false
+    #
+    # Enable the Proxy Protocol header parsing for the entry point
+    proxyProtocol:
+      trustedIPs:
+        - 0.0.0.0/0
+        - 127.0.0.1/32
+      insecure: false
+    #
+    # One can apply Middlewares on an entrypoint
+    # https://doc.traefik.io/traefik/middlewares/overview/
+    # https://doc.traefik.io/traefik/routing/entrypoints/#middlewares
+    # /!\ It introduces here a link between your static configuration and your dynamic configuration /!\
+    # It follows the provider naming convention: https://doc.traefik.io/traefik/providers/overview/#provider-namespace
+    # middlewares:
+    #   - namespace-name1@kubernetescrd
+    #   - namespace-name2@kubernetescrd
+    middlewares: []
+  metrics:
+    # When using hostNetwork, use another port to avoid conflict with node exporter:
+    # https://github.com/prometheus/prometheus/wiki/Default-port-allocations
+    port: 9100
+    # hostPort: 9100
+    # Defines whether the port is exposed if service.type is LoadBalancer or
+    # NodePort.
+    #
+    # You may not want to expose the metrics port on production deployments.
+    # If you want to access it from outside of your cluster,
+    # use `kubectl port-forward` or create a secure ingress
+    expose: false
+    # The exposed port for this service
+    exposedPort: 9100
+    # The port protocol (TCP/UDP)
+    protocol: TCP
+EOF
+}
+
+install_ingress(){
+  INGRESS_CONTROLLER=$1
+  elif [[ "$INGRESS_CONTROLLER" == "traefik2" ]]; then
+    install_and_configure_traefik2
+  else
+    echo "Ingress controller not supported"
+  fi
+}
+
+render_staging_issuer(){
+STAGING_ISSUER_RESOURCE=$1
+cat << 'EOF' > "$STAGING_ISSUER_RESOURCE"
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+ name: letsencrypt-staging
+ namespace: cert-manager
+spec:
+ acme:
+   # The ACME server URL
+   server: https://acme-staging-v02.api.letsencrypt.org/directory
+   # Email address used for ACME registration
+   email: ${certmanager_email_address}
+   # Name of a secret used to store the ACME account private key
+   privateKeySecretRef:
+     name: letsencrypt-staging
+   # Enable the HTTP-01 challenge provider
+   solvers:
+   - http01:
+       ingress:
+         class:  nginx
+EOF
+}
+
+render_prod_issuer(){
+PROD_ISSUER_RESOURCE=$1
+cat << 'EOF' > "$PROD_ISSUER_RESOURCE"
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: letsencrypt-prod
+  namespace: cert-manager
+spec:
+  acme:
+    # The ACME server URL
+    server: https://acme-v02.api.letsencrypt.org/directory
+    # Email address used for ACME registration
+    email: ${certmanager_email_address}
+    # Name of a secret used to store the ACME account private key
+    privateKeySecretRef:
+      name: letsencrypt-prod
+    # Enable the HTTP-01 challenge provider
+    solvers:
+    - http01:
+        ingress:
+          class: nginx
+EOF
+}
+
+check_os
+
+if [[ "$operating_system" == "ubuntu" ]]; then
+  echo "Canonical Ubuntu"
+  # Disable firewall 
+  /usr/sbin/netfilter-persistent stop
+  /usr/sbin/netfilter-persistent flush
+
+  systemctl stop netfilter-persistent.service
+  systemctl disable netfilter-persistent.service
+  # END Disable firewall
+
+  apt-get update
+  apt-get install -y software-properties-common jq git
+  DEBIAN_FRONTEND=noninteractive apt-get upgrade -y
+  DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y  python3 python3-pip
+  pip install oci-cli
+
+  # Fix /var/log/journal dir size
+  echo "SystemMaxUse=100M" >> /etc/systemd/journald.conf
+  echo "SystemMaxFileSize=100M" >> /etc/systemd/journald.conf
+  systemctl restart systemd-journald
+fi
+
+if [[ "$operating_system" == "oraclelinux" ]]; then
+  echo "Oracle Linux"
+  # Disable firewall
+  systemctl disable --now firewalld
+  # END Disable firewall
+
+  # Fix iptables/SELinux bug
+  echo '(allow iptables_t cgroup_t (dir (ioctl)))' > /root/local_iptables.cil
+  semodule -i /root/local_iptables.cil
+
+  dnf -y update
+
+  if [[ $major -eq 9 ]]; then
+    dnf -y install oraclelinux-developer-release-el9
+    dnf -y install jq python39-oci-cli curl git
+  else
+    dnf -y install oraclelinux-developer-release-el8
+    dnf -y module enable python36:3.6
+    dnf -y install jq python36-oci-cli curl git
+  fi
+fi
+
+apt install vim -y
+cd ~
+dd if=/dev/zero of=/swapfile bs=1024 count=4000000
+chmod 0600 /swapfile
+mkswap /swapfile
+echo '/swapfile swap swap defaults 0 0' >> /etc/fstab
+systemctl daemon-reload
+swapon /swapfile
+
+export OCI_CLI_AUTH=instance_principal
+first_instance=$(oci compute instance list --compartment-id ${compartment_ocid} --availability-domain ${availability_domain} --lifecycle-state RUNNING --sort-by TIMECREATED  | jq -r '.data[]|select(."display-name" | endswith("k3s-servers")) | .["display-name"]' | tail -n 1)
+instance_id=$(curl -s -H "Authorization: Bearer Oracle" -L http://169.254.169.254/opc/v2/instance | jq -r '.displayName')
+
+k3s_install_params=("--tls-san ${k3s_tls_san}")
+
+%{ if k3s_subnet != "default_route_table" } 
+local_ip=$(ip -4 route ls ${k3s_subnet} | grep -Po '(?<=src )(\S+)')
+flannel_iface=$(ip -4 route ls ${k3s_subnet} | grep -Po '(?<=dev )(\S+)')
+
+k3s_install_params+=("--node-ip $local_ip")
+k3s_install_params+=("--advertise-address $local_ip")
+k3s_install_params+=("--flannel-iface $flannel_iface")
+%{ endif }
+
+%{ if disable_ingress }
+k3s_install_params+=("--disable traefik")
+%{ endif }
+
+%{ if ! disable_ingress }
+%{ if ingress_controller != "default" }
+k3s_install_params+=("--disable traefik")
+%{ endif }
+%{ endif }
+
+%{ if expose_kubeapi }
+k3s_install_params+=("--tls-san ${k3s_tls_san_public}")
+%{ endif }
+
+if [[ "$operating_system" == "oraclelinux" ]]; then
+  k3s_install_params+=("--selinux")
+fi
+
+INSTALL_PARAMS="$${k3s_install_params[*]}"
+
+%{ if k3s_version == "latest" }
+K3S_VERSION=$(curl --silent https://api.github.com/repos/k3s-io/k3s/releases/latest | jq -r '.name')
+%{ else }
+K3S_VERSION="${k3s_version}"
+%{ endif }
+
+if [[ "$first_instance" == "$instance_id" ]]; then
+  echo "I'm the first yeeee: Cluster init!"
+  until (curl -sfL https://get.k3s.io | INSTALL_K3S_VERSION=$K3S_VERSION K3S_TOKEN=${k3s_token} sh -s - --cluster-init $INSTALL_PARAMS); do
+    echo 'k3s did not install correctly'
+    sleep 2
+  done
+else
+  echo ":( Cluster join"
+  wait_lb
+  until (curl -sfL https://get.k3s.io | INSTALL_K3S_VERSION=$K3S_VERSION K3S_TOKEN=${k3s_token} sh -s - --server https://${k3s_url}:6443 $INSTALL_PARAMS); do
+    echo 'k3s did not install correctly'
+    sleep 2
+  done
+fi
+
+%{ if is_k3s_server }
+until kubectl get pods -A | grep 'Running'; do
+  echo 'Waiting for k3s startup'
+  sleep 5
+done
+
+%{ if install_longhorn }
+if [[ "$first_instance" == "$instance_id" ]]; then
+  if [[ "$operating_system" == "ubuntu" ]]; then
+    DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y  open-iscsi curl util-linux
+  fi
+
+  systemctl enable --now iscsid.service
+  kubectl apply -f https://raw.githubusercontent.com/longhorn/longhorn/${longhorn_release}/deploy/longhorn.yaml --kubeconfig /etc/rancher/k3s/k3s.yaml
+fi
+%{ endif }
+
+%{ if ! disable_ingress }
+%{ if ingress_controller != "default" }
+if [[ "$first_instance" == "$instance_id" ]]; then
+  install_ingress ${ingress_controller}
+fi
+%{ endif }
+%{ endif }
+
+%{ if install_certmanager }
+if [[ "$first_instance" == "$instance_id" ]]; then
+  kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/${certmanager_release}/cert-manager.yaml --kubeconfig /etc/rancher/k3s/k3s.yaml
+  render_staging_issuer /root/staging_issuer.yaml
+  render_prod_issuer /root/prod_issuer.yaml
+
+  # Wait cert-manager to be ready
+  until kubectl get pods -n cert-manager | grep 'Running'; do
+    echo 'Waiting for cert-manager to be ready'
+    sleep 15
+  done
+
+  kubectl create -f /root/prod_issuer.yaml
+  kubectl create -f /root/staging_issuer.yaml
+fi
+%{ endif }
+
+%{ if install_argocd }
+if [[ "$first_instance" == "$instance_id" ]]; then
+  kubectl create namespace argocd
+  kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/${argocd_release}/manifests/install.yaml --kubeconfig /etc/rancher/k3s/k3s.yaml
+
+%{ if install_argocd_image_updater }
+  kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj-labs/argocd-image-updater/${argocd_image_updater_release}/manifests/install.yaml --kubeconfig /etc/rancher/k3s/k3s.yaml
+%{ endif }
+fi
+%{ endif }
+if [[ "$first_instance" == "$instance_id" ]]; then
+helm repo add kubereboot https://kubereboot.github.io/charts
+helm repo add traefik https://helm.traefik.io/traefik
+helm repo update
+helm install kubereboot/kured --generate-name --kubeconfig /etc/rancher/k3s/k3s.yaml
+TRAEFIK_VALUES_FILE=/root/traefik2_values.yaml
+helm install --namespace=traefik -f $TRAEFIK_VALUES_FILE traefik traefik/traefik --kubeconfig /etc/rancher/k3s/k3s.yaml
+kubectl create namespace argocd
+kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/v2.10.0-rc1/manifests/install.yaml
+kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj-labs/argocd-image-updater/${argocd_image_updater_release}/manifests/install.yaml --kubeconfig /etc/rancher/k3s/k3s.yaml
+fi
+%{ endif }
+fi
diff --git a/self-managed/iam.tf b/self-managed/iam.tf
new file mode 100644
index 0000000..9404f13
--- /dev/null
+++ b/self-managed/iam.tf
@@ -0,0 +1,28 @@
+resource "oci_identity_dynamic_group" "compute_dynamic_group" {
+  compartment_id = var.tenancy_ocid
+  description    = "Dynamic group which contains all instance in this compartment"
+  matching_rule  = "All {instance.compartment.id = '${var.compartment_ocid}'}"
+  name           = var.oci_identity_dynamic_group_name
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+resource "oci_identity_policy" "compute_dynamic_group_policy" {
+  compartment_id = var.compartment_ocid
+  description    = "Policy to allow dynamic group ${oci_identity_dynamic_group.compute_dynamic_group.name} to read instance-family and compute-management-family in the compartment"
+  name           = var.oci_identity_policy_name
+  statements = [
+    "allow dynamic-group ${oci_identity_dynamic_group.compute_dynamic_group.name} to read instance-family in compartment id ${var.compartment_ocid}",
+    "allow dynamic-group ${oci_identity_dynamic_group.compute_dynamic_group.name} to read compute-management-family in compartment id ${var.compartment_ocid}"
+  ]
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
diff --git a/self-managed/k3s-servers.tf b/self-managed/k3s-servers.tf
new file mode 100644
index 0000000..20f09e6
--- /dev/null
+++ b/self-managed/k3s-servers.tf
@@ -0,0 +1,37 @@
+resource "oci_core_instance_pool" "k3s_servers" {
+  depends_on = [
+    oci_identity_dynamic_group.compute_dynamic_group,
+    oci_identity_policy.compute_dynamic_group_policy
+  ]
+
+  timeouts {
+    create = "11m"
+    update = "11m"
+    delete = "10m"
+  }
+
+  lifecycle {
+    create_before_destroy = true
+    ignore_changes        = [load_balancers, freeform_tags, instance_configuration_id]
+  }
+
+  display_name              = "k3s-servers"
+  compartment_id            = var.compartment_ocid
+  instance_configuration_id = oci_core_instance_configuration.k3s_server_template.id
+
+  placement_configurations {
+    availability_domain = var.availability_domain
+    primary_subnet_id   = oci_core_subnet.default_oci_core_subnet10.id
+    fault_domains       = var.fault_domains
+  }
+
+  size = var.k3s_server_pool_size
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+    "k3s-cluster-name"      = "${var.cluster_name}"
+    "k3s-instance-type"     = "k3s-server"
+  }
+}
\ No newline at end of file
diff --git a/self-managed/k3s-workers.tf b/self-managed/k3s-workers.tf
new file mode 100644
index 0000000..8f18b4e
--- /dev/null
+++ b/self-managed/k3s-workers.tf
@@ -0,0 +1,107 @@
+resource "oci_core_instance_pool" "k3s_workers" {
+
+  depends_on = [
+    oci_load_balancer_load_balancer.k3s_load_balancer,
+  ]
+
+  lifecycle {
+    create_before_destroy = true
+    ignore_changes        = [load_balancers, freeform_tags, instance_configuration_id]
+  }
+
+  timeouts {
+    create = "11m"
+    update = "11m"
+    delete = "10m"
+  }
+
+  display_name              = "k3s-workers"
+  compartment_id            = var.compartment_ocid
+  instance_configuration_id = oci_core_instance_configuration.k3s_worker_template.id
+
+  placement_configurations {
+    availability_domain = var.availability_domain
+    primary_subnet_id   = oci_core_subnet.default_oci_core_subnet10.id
+    fault_domains       = var.fault_domains
+  }
+
+  size = var.k3s_worker_pool_size
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+    "k3s-cluster-name"      = "${var.cluster_name}"
+    "k3s-instance-type"     = "k3s-worker"
+  }
+}
+
+resource "oci_core_instance" "k3s_extra_worker_node" {
+  count = var.k3s_extra_worker_node ? 1 : 0
+  depends_on = [
+    oci_load_balancer_load_balancer.k3s_load_balancer,
+    oci_core_instance_pool.k3s_workers
+  ]
+
+  timeouts {
+    create = "11m"
+    update = "11m"
+    delete = "10m"
+  }
+
+  compartment_id      = var.compartment_ocid
+  availability_domain = var.availability_domain
+  display_name        = "K3s extra worker node"
+
+  agent_config {
+    is_management_disabled = "false"
+    is_monitoring_disabled = "false"
+
+    plugins_config {
+      desired_state = "DISABLED"
+      name          = "Vulnerability Scanning"
+    }
+
+    plugins_config {
+      desired_state = "ENABLED"
+      name          = "Compute Instance Monitoring"
+    }
+
+    plugins_config {
+      desired_state = "DISABLED"
+      name          = "Bastion"
+    }
+  }
+
+  shape = var.agent_compute_shape
+  shape_config {
+    memory_in_gbs = "6"
+    ocpus         = "1"
+  }
+
+  source_details {
+    source_id   = var.agent_os_image_id
+    source_type = "image"
+  }
+
+  create_vnic_details {
+    assign_private_dns_record = true
+    assign_public_ip          = true
+    subnet_id                 = oci_core_subnet.default_oci_core_subnet10.id
+    nsg_ids                   = [oci_core_network_security_group.lb_to_instances_http.id]
+    hostname_label            = "k3s-extra-worker-node"
+  }
+
+  metadata = {
+    "ssh_authorized_keys" = file(var.public_key_path)
+    "user_data"           = data.cloudinit_config.k3s_worker_tpl.rendered
+  }
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+    "k3s-cluster-name"      = "${var.cluster_name}"
+    "k3s-instance-type"     = "k3s-worker"
+  }
+}
diff --git a/self-managed/k3slb.tf b/self-managed/k3slb.tf
new file mode 100644
index 0000000..a80daab
--- /dev/null
+++ b/self-managed/k3slb.tf
@@ -0,0 +1,141 @@
+resource "oci_network_load_balancer_network_load_balancer" "k3s_public_lb" {
+  compartment_id             = var.compartment_ocid
+  display_name               = var.public_load_balancer_name
+  subnet_id                  = oci_core_subnet.oci_core_subnet11.id
+  network_security_group_ids = [oci_core_network_security_group.public_lb_nsg.id]
+
+  is_private                     = false
+  is_preserve_source_destination = false
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+# HTTP
+resource "oci_network_load_balancer_listener" "k3s_http_listener" {
+  default_backend_set_name = oci_network_load_balancer_backend_set.k3s_http_backend_set.name
+  name                     = "k3s_http_listener"
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  port                     = var.http_lb_port
+  protocol                 = "TCP"
+}
+
+resource "oci_network_load_balancer_backend_set" "k3s_http_backend_set" {
+  health_checker {
+    protocol = "TCP"
+    port     = var.http_lb_port
+  }
+
+  name                     = "k3s_http_backend"
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  policy                   = "FIVE_TUPLE"
+  is_preserve_source       = true
+}
+
+resource "oci_network_load_balancer_backend" "k3s_http_backend" {
+  depends_on = [
+    oci_core_instance_pool.k3s_workers,
+  ]
+
+  count                    = var.k3s_worker_pool_size
+  backend_set_name         = oci_network_load_balancer_backend_set.k3s_http_backend_set.name
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  name                     = format("%s:%s", data.oci_core_instance_pool_instances.k3s_workers_instances.instances[count.index].id, var.http_lb_port)
+  port                     = var.http_lb_port
+  target_id                = data.oci_core_instance_pool_instances.k3s_workers_instances.instances[count.index].id
+}
+
+resource "oci_network_load_balancer_backend" "k3s_http_backend_extra_node" {
+  count = var.k3s_extra_worker_node ? 1 : 0
+
+  backend_set_name         = oci_network_load_balancer_backend_set.k3s_http_backend_set.name
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  name                     = format("%s:%s", oci_core_instance.k3s_extra_worker_node[count.index].id, var.http_lb_port)
+  port                     = var.http_lb_port
+  target_id                = oci_core_instance.k3s_extra_worker_node[count.index].id
+}
+
+# HTTPS
+resource "oci_network_load_balancer_listener" "k3s_https_listener" {
+  default_backend_set_name = oci_network_load_balancer_backend_set.k3s_https_backend_set.name
+  name                     = "k3s_https_listener"
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  port                     = var.https_lb_port
+  protocol                 = "TCP"
+}
+
+resource "oci_network_load_balancer_backend_set" "k3s_https_backend_set" {
+  health_checker {
+    protocol = "TCP"
+    port     = var.https_lb_port
+  }
+
+  name                     = "k3s_https_backend"
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  policy                   = "FIVE_TUPLE"
+  is_preserve_source       = true
+}
+
+resource "oci_network_load_balancer_backend" "k3s_https_backend" {
+  depends_on = [
+    oci_core_instance_pool.k3s_workers,
+  ]
+
+  count                    = var.k3s_worker_pool_size
+  backend_set_name         = oci_network_load_balancer_backend_set.k3s_https_backend_set.name
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  name                     = format("%s:%s", data.oci_core_instance_pool_instances.k3s_workers_instances.instances[count.index].id, var.https_lb_port)
+  port                     = var.https_lb_port
+  target_id                = data.oci_core_instance_pool_instances.k3s_workers_instances.instances[count.index].id
+}
+
+resource "oci_network_load_balancer_backend" "k3s_https_backend_extra_node" {
+  count = var.k3s_extra_worker_node ? 1 : 0
+
+  backend_set_name         = oci_network_load_balancer_backend_set.k3s_https_backend_set.name
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  name                     = format("%s:%s", oci_core_instance.k3s_extra_worker_node[count.index].id, var.https_lb_port)
+  port                     = var.https_lb_port
+  target_id                = oci_core_instance.k3s_extra_worker_node[count.index].id
+}
+
+## kube-api
+
+resource "oci_network_load_balancer_listener" "k3s_kubeapi_listener" {
+  count                    = var.expose_kubeapi ? 1 : 0
+  default_backend_set_name = oci_network_load_balancer_backend_set.k3s_kubeapi_backend_set[count.index].name
+  name                     = "k3s_kubeapi_listener"
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  port                     = var.kube_api_port
+  protocol                 = "TCP"
+}
+
+resource "oci_network_load_balancer_backend_set" "k3s_kubeapi_backend_set" {
+  count = var.expose_kubeapi ? 1 : 0
+
+  health_checker {
+    protocol = "TCP"
+    port     = var.kube_api_port
+  }
+
+  name                     = "k3s_kubeapi_backend"
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  policy                   = "FIVE_TUPLE"
+  is_preserve_source       = true
+}
+
+resource "oci_network_load_balancer_backend" "k3s_kubeapi_backend" {
+  depends_on = [
+    oci_core_instance_pool.k3s_servers,
+  ]
+
+  count                    = var.expose_kubeapi ? var.k3s_server_pool_size : 0
+  backend_set_name         = oci_network_load_balancer_backend_set.k3s_kubeapi_backend_set[0].name
+  network_load_balancer_id = oci_network_load_balancer_network_load_balancer.k3s_public_lb.id
+  name                     = format("%s:%s", data.oci_core_instance_pool_instances.k3s_servers_instances.instances[count.index].id, var.kube_api_port)
+  port                     = var.kube_api_port
+  target_id                = data.oci_core_instance_pool_instances.k3s_servers_instances.instances[count.index].id
+}
\ No newline at end of file
diff --git a/self-managed/lb.tf b/self-managed/lb.tf
new file mode 100644
index 0000000..e9161c0
--- /dev/null
+++ b/self-managed/lb.tf
@@ -0,0 +1,54 @@
+resource "oci_load_balancer_load_balancer" "k3s_load_balancer" {
+  lifecycle {
+    ignore_changes = [network_security_group_ids]
+  }
+
+  compartment_id = var.compartment_ocid
+  display_name   = var.k3s_load_balancer_name
+  shape          = var.public_lb_shape
+  subnet_ids     = [oci_core_subnet.oci_core_subnet11.id]
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+
+  ip_mode    = "IPV4"
+  is_private = true
+
+  shape_details {
+    maximum_bandwidth_in_mbps = 10
+    minimum_bandwidth_in_mbps = 10
+  }
+}
+
+resource "oci_load_balancer_listener" "k3s_kube_api_listener" {
+  default_backend_set_name = oci_load_balancer_backend_set.k3s_kube_api_backend_set.name
+  load_balancer_id         = oci_load_balancer_load_balancer.k3s_load_balancer.id
+  name                     = "K3s__kube_api_listener"
+  port                     = var.kube_api_port
+  protocol                 = "TCP"
+}
+
+resource "oci_load_balancer_backend_set" "k3s_kube_api_backend_set" {
+  health_checker {
+    protocol = "TCP"
+    port     = var.kube_api_port
+  }
+  load_balancer_id = oci_load_balancer_load_balancer.k3s_load_balancer.id
+  name             = "K3s__kube_api_backend_set"
+  policy           = "ROUND_ROBIN"
+}
+
+resource "oci_load_balancer_backend" "k3s_kube_api_backend" {
+  depends_on = [
+    oci_core_instance_pool.k3s_servers,
+  ]
+
+  count            = var.k3s_server_pool_size
+  backendset_name  = oci_load_balancer_backend_set.k3s_kube_api_backend_set.name
+  ip_address       = data.oci_core_instance.k3s_servers_instances_ips[count.index].private_ip
+  load_balancer_id = oci_load_balancer_load_balancer.k3s_load_balancer.id
+  port             = var.kube_api_port
+}
\ No newline at end of file
diff --git a/self-managed/locals.tf b/self-managed/locals.tf
new file mode 100644
index 0000000..d8feabf
--- /dev/null
+++ b/self-managed/locals.tf
@@ -0,0 +1,3 @@
+locals {
+  public_lb_ip = [for interface in oci_network_load_balancer_network_load_balancer.k3s_public_lb.ip_addresses : interface.ip_address if interface.is_public == true]
+}
\ No newline at end of file
diff --git a/self-managed/network.tf b/self-managed/network.tf
new file mode 100644
index 0000000..57a4d9a
--- /dev/null
+++ b/self-managed/network.tf
@@ -0,0 +1,63 @@
+resource "oci_core_vcn" "default_oci_core_vcn" {
+  cidr_block     = var.oci_core_vcn_cidr
+  compartment_id = var.compartment_ocid
+  display_name   = "Default OCI core vcn"
+  dns_label      = var.oci_core_vcn_dns_label
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+resource "oci_core_subnet" "default_oci_core_subnet10" {
+  cidr_block        = var.oci_core_subnet_cidr10
+  compartment_id    = var.compartment_ocid
+  display_name      = "${var.oci_core_subnet_cidr10} (default) OCI core subnet"
+  dns_label         = var.oci_core_subnet_dns_label10
+  route_table_id    = oci_core_vcn.default_oci_core_vcn.default_route_table_id
+  vcn_id            = oci_core_vcn.default_oci_core_vcn.id
+  security_list_ids = [oci_core_default_security_list.default_security_list.id]
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+resource "oci_core_subnet" "oci_core_subnet11" {
+  cidr_block        = var.oci_core_subnet_cidr11
+  compartment_id    = var.compartment_ocid
+  display_name      = "${var.oci_core_subnet_cidr11} OCI core subnet"
+  dns_label         = var.oci_core_subnet_dns_label11
+  route_table_id    = oci_core_vcn.default_oci_core_vcn.default_route_table_id
+  vcn_id            = oci_core_vcn.default_oci_core_vcn.id
+  security_list_ids = [oci_core_default_security_list.default_security_list.id]
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+
+resource "oci_core_internet_gateway" "default_oci_core_internet_gateway" {
+  compartment_id = var.compartment_ocid
+  display_name   = "Internet Gateway Default OCI core vcn"
+  enabled        = "true"
+  vcn_id         = oci_core_vcn.default_oci_core_vcn.id
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+resource "oci_core_default_route_table" "default_oci_core_default_route_table" {
+  route_rules {
+    destination       = "0.0.0.0/0"
+    destination_type  = "CIDR_BLOCK"
+    network_entity_id = oci_core_internet_gateway.default_oci_core_internet_gateway.id
+  }
+  manage_default_resource_id = oci_core_vcn.default_oci_core_vcn.default_route_table_id
+}
\ No newline at end of file
diff --git a/self-managed/nsg.tf b/self-managed/nsg.tf
new file mode 100644
index 0000000..26c8b9a
--- /dev/null
+++ b/self-managed/nsg.tf
@@ -0,0 +1,151 @@
+resource "oci_core_network_security_group" "public_lb_nsg" {
+  compartment_id = var.compartment_ocid
+  vcn_id         = oci_core_vcn.default_oci_core_vcn.id
+  display_name   = "K3s public LB nsg"
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+resource "oci_core_network_security_group_security_rule" "allow_http_from_all" {
+  network_security_group_id = oci_core_network_security_group.public_lb_nsg.id
+  direction                 = "INGRESS"
+  protocol                  = 6 # tcp
+
+  description = "Allow HTTP from all"
+
+  source      = "0.0.0.0/0"
+  source_type = "CIDR_BLOCK"
+  stateless   = false
+
+  tcp_options {
+    destination_port_range {
+      max = var.http_lb_port
+      min = var.http_lb_port
+    }
+  }
+}
+
+resource "oci_core_network_security_group_security_rule" "allow_https_from_all" {
+  network_security_group_id = oci_core_network_security_group.public_lb_nsg.id
+  direction                 = "INGRESS"
+  protocol                  = 6 # tcp
+
+  description = "Allow HTTPS from all"
+
+  source      = "0.0.0.0/0"
+  source_type = "CIDR_BLOCK"
+  stateless   = false
+
+  tcp_options {
+    destination_port_range {
+      max = var.https_lb_port
+      min = var.https_lb_port
+    }
+  }
+}
+
+resource "oci_core_network_security_group_security_rule" "allow_kubeapi_from_all" {
+  count                     = var.expose_kubeapi ? 1 : 0
+  network_security_group_id = oci_core_network_security_group.public_lb_nsg.id
+  direction                 = "INGRESS"
+  protocol                  = 6 # tcp
+
+  description = "Allow HTTPS from all"
+
+  source      = var.my_public_ip_cidr
+  source_type = "CIDR_BLOCK"
+  stateless   = false
+
+  tcp_options {
+    destination_port_range {
+      max = var.kube_api_port
+      min = var.kube_api_port
+    }
+  }
+}
+
+resource "oci_core_network_security_group" "lb_to_instances_http" {
+  compartment_id = var.compartment_ocid
+  vcn_id         = oci_core_vcn.default_oci_core_vcn.id
+  display_name   = "Public LB to K3s workers Compute Instances NSG"
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+resource "oci_core_network_security_group_security_rule" "nsg_to_instances_http" {
+  network_security_group_id = oci_core_network_security_group.lb_to_instances_http.id
+  direction                 = "INGRESS"
+  protocol                  = 6 # tcp
+
+  description = "Allow HTTP from all"
+
+  source      = oci_core_network_security_group.public_lb_nsg.id
+  source_type = "NETWORK_SECURITY_GROUP"
+  stateless   = false
+
+  tcp_options {
+    destination_port_range {
+      max = var.http_lb_port
+      min = var.http_lb_port
+    }
+  }
+}
+
+resource "oci_core_network_security_group_security_rule" "nsg_to_instances_https" {
+  network_security_group_id = oci_core_network_security_group.lb_to_instances_http.id
+  direction                 = "INGRESS"
+  protocol                  = 6 # tcp
+
+  description = "Allow HTTPS from all"
+
+  source      = oci_core_network_security_group.public_lb_nsg.id
+  source_type = "NETWORK_SECURITY_GROUP"
+  stateless   = false
+
+  tcp_options {
+    destination_port_range {
+      max = var.https_lb_port
+      min = var.https_lb_port
+    }
+  }
+}
+
+resource "oci_core_network_security_group" "lb_to_instances_kubeapi" {
+  compartment_id = var.compartment_ocid
+  vcn_id         = oci_core_vcn.default_oci_core_vcn.id
+  display_name   = "Public LB to K3s master Compute Instances NSG (kubeapi)"
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
+
+resource "oci_core_network_security_group_security_rule" "nsg_to_instances_kubeapi" {
+  count                     = var.expose_kubeapi ? 1 : 0
+  network_security_group_id = oci_core_network_security_group.lb_to_instances_kubeapi.id
+  direction                 = "INGRESS"
+  protocol                  = 6 # tcp
+
+  description = "Allow kubeapi access from my_public_ip_cidr"
+
+  source      = oci_core_network_security_group.public_lb_nsg.id
+  source_type = "NETWORK_SECURITY_GROUP"
+  stateless   = false
+
+  tcp_options {
+    destination_port_range {
+      max = var.kube_api_port
+      min = var.kube_api_port
+    }
+  }
+}
\ No newline at end of file
diff --git a/self-managed/oci/provider.tf b/self-managed/oci/provider.tf
new file mode 100644
index 0000000..44fb995
--- /dev/null
+++ b/self-managed/oci/provider.tf
@@ -0,0 +1,10 @@
+terraform {
+  required_providers {
+    oci = {
+      source  = "oracle/oci"
+      version = ">= 5.30.0"
+    }
+  }
+}
+
+provider "oci" {}
\ No newline at end of file
diff --git a/self-managed/output.tf b/self-managed/output.tf
new file mode 100644
index 0000000..e33341b
--- /dev/null
+++ b/self-managed/output.tf
@@ -0,0 +1,17 @@
+output "k3s_servers_ips" {
+  depends_on = [
+    data.oci_core_instance_pool_instances.k3s_servers_instances,
+  ]
+  value = data.oci_core_instance.k3s_servers_instances_ips.*.public_ip
+}
+
+output "k3s_workers_ips" {
+  depends_on = [
+    data.oci_core_instance_pool_instances.k3s_workers_instances,
+  ]
+  value = data.oci_core_instance.k3s_workers_instances_ips.*.public_ip
+}
+
+output "public_lb_ip" {
+  value = oci_network_load_balancer_network_load_balancer.k3s_public_lb.ip_addresses
+}
\ No newline at end of file
diff --git a/self-managed/security.tf b/self-managed/security.tf
new file mode 100644
index 0000000..5b811fc
--- /dev/null
+++ b/self-managed/security.tf
@@ -0,0 +1,43 @@
+resource "oci_core_default_security_list" "default_security_list" {
+  compartment_id             = var.compartment_ocid
+  manage_default_resource_id = oci_core_vcn.default_oci_core_vcn.default_security_list_id
+
+  display_name = "Default security list"
+  egress_security_rules {
+    destination = "0.0.0.0/0"
+    protocol    = "all"
+  }
+
+  ingress_security_rules {
+    protocol = 1 # icmp
+    source   = var.my_public_ip_cidr
+
+    description = "Allow icmp from  ${var.my_public_ip_cidr}"
+
+  }
+
+  ingress_security_rules {
+    protocol = 6 # tcp
+    source   = var.my_public_ip_cidr
+
+    description = "Allow SSH from ${var.my_public_ip_cidr}"
+
+    tcp_options {
+      min = 22
+      max = 22
+    }
+  }
+
+  ingress_security_rules {
+    protocol = "all"
+    source   = var.oci_core_vcn_cidr
+
+    description = "Allow all from vcn subnet"
+  }
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+  }
+}
\ No newline at end of file
diff --git a/self-managed/template.tf b/self-managed/template.tf
new file mode 100644
index 0000000..8ae305c
--- /dev/null
+++ b/self-managed/template.tf
@@ -0,0 +1,144 @@
+resource "oci_core_instance_configuration" "k3s_server_template" {
+
+  compartment_id = var.compartment_ocid
+  display_name   = "k3s server configuration"
+
+  timeouts {
+    create = "11m"
+    update = "11m"
+    delete = "10m"
+  }
+  
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+    "k3s-template-type"     = "k3s-server"
+  }
+
+  instance_details {
+    instance_type = "compute"
+
+    launch_details {
+
+      agent_config {
+        is_management_disabled = "false"
+        is_monitoring_disabled = "false"
+
+        plugins_config {
+          desired_state = "DISABLED"
+          name          = "Vulnerability Scanning"
+        }
+
+        plugins_config {
+          desired_state = "ENABLED"
+          name          = "Compute Instance Monitoring"
+        }
+
+        plugins_config {
+          desired_state = "DISABLED"
+          name          = "Bastion"
+        }
+      }
+
+      availability_domain = var.availability_domain
+      compartment_id      = var.compartment_ocid
+
+      create_vnic_details {
+        assign_public_ip = true
+        subnet_id        = oci_core_subnet.default_oci_core_subnet10.id
+        nsg_ids          = [oci_core_network_security_group.lb_to_instances_kubeapi.id]
+      }
+
+      display_name = "k3s server template"
+
+      metadata = {
+        "ssh_authorized_keys" = file(var.public_key_path)
+        "user_data"           = data.cloudinit_config.k3s_server_tpl.rendered
+      }
+
+      shape = var.server_compute_shape
+      shape_config {
+        memory_in_gbs = "1"
+        ocpus         = "1"
+      }
+      source_details {
+        image_id    = var.server_os_image_id
+        source_type = "image"
+      }
+    }
+  }
+}
+
+resource "oci_core_instance_configuration" "k3s_worker_template" {
+
+  compartment_id = var.compartment_ocid
+  display_name   = "k3s worker configuration"
+
+  freeform_tags = {
+    "provisioner"           = "terraform"
+    "environment"           = "${var.environment}"
+    "${var.unique_tag_key}" = "${var.unique_tag_value}"
+    "k3s-template-type"     = "k3s-worker"
+  }
+
+  timeouts {
+    create = "11m"
+    update = "11m"
+    delete = "10m"
+  }
+
+  instance_details {
+    instance_type = "compute"
+
+    launch_details {
+
+      agent_config {
+        is_management_disabled = "false"
+        is_monitoring_disabled = "false"
+
+        plugins_config {
+          desired_state = "DISABLED"
+          name          = "Vulnerability Scanning"
+        }
+
+        plugins_config {
+          desired_state = "ENABLED"
+          name          = "Compute Instance Monitoring"
+        }
+
+        plugins_config {
+          desired_state = "DISABLED"
+          name          = "Bastion"
+        }
+      }
+
+    availability_domain = var.availability_domain
+      # fault_domain = "FAULT-DOMAIN-3"
+      compartment_id      = var.compartment_ocid
+
+      create_vnic_details {
+        assign_public_ip = true
+        subnet_id        = oci_core_subnet.default_oci_core_subnet10.id
+        nsg_ids          = [oci_core_network_security_group.lb_to_instances_http.id]
+      }
+
+      display_name = "k3s worker template"
+
+      metadata = {
+        "ssh_authorized_keys" = file(var.public_key_path)
+        "user_data"           = data.cloudinit_config.k3s_worker_tpl.rendered
+      }
+
+      shape = var.agent_compute_shape
+      shape_config {
+        memory_in_gbs = "12"
+        ocpus         = "2"
+      }
+      source_details {
+        image_id    = var.agent_os_image_id
+        source_type = "image"
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/self-managed/terraform.tf b/self-managed/terraform.tf
new file mode 100644
index 0000000..a0a70bf
--- /dev/null
+++ b/self-managed/terraform.tf
@@ -0,0 +1,8 @@
+terraform {
+  required_providers {
+    oci = {
+      source  = "oracle/oci"
+      version = ">= 4.64.0"
+    }
+  }
+}
\ No newline at end of file
diff --git a/self-managed/vars.tf b/self-managed/vars.tf
new file mode 100644
index 0000000..7862b74
--- /dev/null
+++ b/self-managed/vars.tf
@@ -0,0 +1,238 @@
+variable "region" {
+  type = string
+}
+
+variable "availability_domain" {
+  type = string
+}
+
+variable "tenancy_ocid" {
+
+}
+
+variable "compartment_ocid" {
+  type = string
+}
+
+variable "environment" {
+  type = string
+}
+
+variable "cluster_name" {
+  type = string
+}
+
+variable "server_os_image_id" {
+  type = string
+}
+
+variable "agent_os_image_id" {
+  type = string
+}
+
+variable "k3s_version" {
+  type    = string
+  default = "latest"
+}
+
+variable "k3s_subnet" {
+  type    = string
+  default = "default_route_table"
+}
+
+variable "fault_domains" {
+  type    = list(any)
+  default = ["FAULT-DOMAIN-1", "FAULT-DOMAIN-2", "FAULT-DOMAIN-3"]
+}
+
+variable "public_key_path" {
+  type        = string
+  default     = "~/.ssh/id_rsa.pub"
+  description = "Path to your public workstation SSH key"
+}
+
+variable "agent_compute_shape" {
+  type    = string
+  default = "VM.Standard.A1.Flex"
+}
+
+variable "server_compute_shape" {
+  type    = string
+  default = "VM.Standard.E2.1.Micro"
+}
+
+variable "public_lb_shape" {
+  type    = string
+  default = "flexible"
+}
+
+variable "oci_identity_dynamic_group_name" {
+  type        = string
+  default     = "Compute_Dynamic_Group"
+  description = "Dynamic group which contains all instance in this compartment"
+}
+
+variable "oci_identity_policy_name" {
+  type        = string
+  default     = "Compute_To_Oci_Api_Policy"
+  description = "Policy to allow dynamic group, to read OCI api without auth"
+}
+
+variable "oci_core_vcn_dns_label" {
+  type    = string
+  default = "defaultvcn"
+}
+
+variable "oci_core_subnet_dns_label10" {
+  type    = string
+  default = "defaultsubnet10"
+}
+
+variable "oci_core_subnet_dns_label11" {
+  type    = string
+  default = "defaultsubnet11"
+}
+
+variable "oci_core_vcn_cidr" {
+  type    = string
+  default = "10.0.0.0/16"
+}
+
+variable "oci_core_subnet_cidr10" {
+  type    = string
+  default = "10.0.0.0/24"
+}
+
+variable "oci_core_subnet_cidr11" {
+  type    = string
+  default = "10.0.1.0/24"
+}
+
+variable "kube_api_port" {
+  type    = number
+  default = 6443
+}
+
+variable "k3s_load_balancer_name" {
+  type    = string
+  default = "k3s internal load balancer"
+}
+
+variable "public_load_balancer_name" {
+  type    = string
+  default = "K3s public LB"
+}
+
+variable "http_lb_port" {
+  type    = number
+  default = 80
+}
+
+variable "https_lb_port" {
+  type    = number
+  default = 443
+}
+
+variable "ingress_controller_http_nodeport" {
+  type    = number
+  default = 30080
+}
+
+variable "ingress_controller_https_nodeport" {
+  type    = number
+  default = 30443
+}
+
+variable "k3s_server_pool_size" {
+  type    = number
+  default = 1
+}
+
+variable "k3s_worker_pool_size" {
+  type    = number
+  default = 2
+}
+
+variable "k3s_extra_worker_node" {
+  type    = bool
+  default = true
+}
+
+variable "unique_tag_key" {
+  type    = string
+  default = "k3s-provisioner"
+}
+
+variable "unique_tag_value" {
+  type    = string
+  default = "https://github.com/garutilorenzo/k3s-oci-cluster"
+}
+
+variable "my_public_ip_cidr" {
+  type        = string
+  description = "My public ip CIDR"
+}
+
+variable "disable_ingress" {
+  type    = bool
+  default = false
+}
+
+variable "ingress_controller" {
+  type    = string
+  default = "default"
+  validation {
+    condition     = contains(["default", "traefik2"], var.ingress_controller)
+    error_message = "Supported ingress controllers are: default, traefik2"
+  }
+}
+
+variable "install_certmanager" {
+  type    = bool
+  default = true
+}
+
+variable "certmanager_release" {
+  type    = string
+  default = "v1.11.0"
+}
+
+variable "certmanager_email_address" {
+  type    = string
+  default = "changeme@example.com"
+}
+
+variable "install_longhorn" {
+  type    = bool
+  default = true
+}
+
+variable "longhorn_release" {
+  type    = string
+  default = "v1.4.0"
+}
+
+variable "install_argocd" {
+  type    = bool
+  default = true
+}
+
+variable "argocd_release" {
+  type    = string
+  default = "v2.4.11"
+}
+
+variable "install_argocd_image_updater" {
+  type    = bool
+  default = true
+}
+
+variable "argocd_image_updater_release" {
+  type    = string
+  default = "v0.12.0"
+}
+
+variable "expose_kubeapi" {
+  type    = bool
+  default = false
+}
\ No newline at end of file