add half done self managed version

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
+}