fix: add kubeconfig.tf file and resource make dynamic

Author: themaheshyadav

.gitignore

@@ -207,4 +207,5 @@ terraform.tfstate
 *.tfstate.backup
 *.iml
 *.terraform.lock.hcl
-*.lock.hcl
+*.lock.hcl
+*kubeonfig

README.yaml

@@ -33,6 +33,7 @@ include:
 # How to use this project
 usage: |-
   Here are some examples of how you can use this module in your inventory structure:
+  ## basic example
   ```hcl
   module "cluster" {
     source          = "terraform-do-modules/cluster/digitalocean"
@@ -43,22 +44,70 @@ usage: |-
     cluster_version = "1.27.2-do.0"
     vpc_uuid        = module.vpc.id
 
-    default_node_pool = {
-      default_node = {
+    critical_node_pool = {
+      critical_node = {
         node_count = 1
         min_nodes  = 1
         max_nodes  = 2
         size       = "s-1vcpu-2gb"
       }
     }
 
-    node_pools = {
-      node = {
-        size       = "s-1vcpu-2gb"
+    app_node_pools = {
+      app_node = {
         node_count = 1
         min_nodes  = 1
         max_nodes  = 2
+        size       = "s-1vcpu-2gb"
       }
     }
   }
     ```
+  ## complete example
+  ```hcl
+  module "cluster" {
+    source          = "terraform-do-modules/cluster/digitalocean"
+    version         = "0.15.0"
+    name            = local.name
+    environment     = local.environment
+    region          = local.region
+    cluster_version = "1.27.2-do.0"
+    vpc_uuid        = module.vpc.id
+
+    critical_node_pool = {
+      critical_node = {
+        node_count = 1
+        min_nodes  = 1
+        max_nodes  = 2
+        size       = "s-1vcpu-2gb"
+        labels     = { "cluster" = "critical-node", }
+        tags       = ["demo"]
+        taint = [
+          {
+            key    = "name"
+            value  = "default"
+            effect = "NoSchedule"
+          }
+        ]
+      }
+    }
+
+    app_node_pools = {
+      app_node = {
+        size       = "s-1vcpu-2gb"
+        node_count = 1
+        min_nodes  = 1
+        max_nodes  = 2
+        labels     = { "cluster" = "app-node" }
+        tags       = ["demo"]
+        taint = [
+          {
+            key    = "mysize"
+            value  = "large"
+            effect = "NoSchedule"
+          }
+        ]
+      }
+    }
+  }
+    ```

_examples/basic/main.tf

@@ -1,7 +1,7 @@
 provider "digitalocean" {}
 
 locals {
-  name        = "app3"
+  name        = "app"
   environment = "test"
   region      = "blr1"
 }
@@ -28,21 +28,21 @@ module "cluster" {
   cluster_version = "1.27.2-do.0"
   vpc_uuid        = module.vpc.id
 
-  default_node_pool = {
-    default_node = {
+  critical_node_pool = {
+    critical_node = {
       node_count = 1
       min_nodes  = 1
       max_nodes  = 2
       size       = "s-1vcpu-2gb"
     }
   }
 
-  node_pools = {
-    node = {
-      size       = "s-1vcpu-2gb"
+  app_node_pools = {
+    app_node = {
       node_count = 1
       min_nodes  = 1
       max_nodes  = 2
+      size       = "s-1vcpu-2gb"
     }
   }
 }

_examples/basic/outputs.tf

@@ -4,4 +4,4 @@
 output "id" {
   value       = module.cluster[*].id
   description = "The id of Kubernetes cluster."
-}
+}

_examples/complete/main.tf

@@ -28,27 +28,40 @@ module "cluster" {
   cluster_version = "1.27.2-do.0"
   vpc_uuid        = module.vpc.id
 
-  default_node_pool = {
-    default_node = {
+  critical_node_pool = {
+    critical_node = {
       node_count = 1
       min_nodes  = 1
       max_nodes  = 2
       size       = "s-1vcpu-2gb"
+      labels     = { "cluster" = "critical-node", }
+      tags       = ["demo"]
+      taint = [
+        {
+          key    = "name"
+          value  = "default"
+          effect = "NoSchedule"
+        }
+      ]
     }
   }
 
-  node_pools = {
-    node1 = {
-      size       = "s-1vcpu-2gb"
-      node_count = 1
-      min_nodes  = 1
-      max_nodes  = 2
-    },
-    node2 = {
+  app_node_pools = {
+    app_node = {
       size       = "s-1vcpu-2gb"
       node_count = 1
       min_nodes  = 1
       max_nodes  = 2
+      labels     = { "cluster" = "app-node" }
+      tags       = ["demo"]
+      taint = [
+        {
+          key    = "mysize"
+          value  = "large"
+          effect = "NoSchedule"
+        }
+      ]
     }
   }
 }
+

kubeconfig.tf

@@ -0,0 +1,4 @@
+resource "local_file" "kubeconfig" {
+  content  = join("", digitalocean_kubernetes_cluster.main[*].kube_config[0].raw_config)
+  filename = pathexpand(var.kubeconfig_path)
+}

main.tf

@@ -26,16 +26,24 @@ resource "digitalocean_kubernetes_cluster" "main" {
   registry_integration = var.registry_integration
 
   dynamic "node_pool" {
-    for_each = var.default_node_pool
+    for_each = var.critical_node_pool
     content {
-      name       = lookup(node_pool.value, "name", "default-node-pool")
+      name       = lookup(node_pool.value, "name", "application")
       size       = lookup(node_pool.value, "size", "s-1vcpu-2gb")
       node_count = lookup(node_pool.value, "node_count", 1)
       auto_scale = lookup(node_pool.value, "auto_scale", true)
       min_nodes  = lookup(node_pool.value, "min_nodes", 1)
       max_nodes  = lookup(node_pool.value, "max_nodes", 2)
       tags       = lookup(node_pool.value, "tags", null)
       labels     = lookup(node_pool.value, "labels", null)
+      dynamic "taint" {
+        for_each = lookup(node_pool.value, "taint", [])
+        content {
+          key    = lookup(taint.value, "key", null)
+          value  = lookup(taint.value, "value", null)
+          effect = lookup(taint.value, "effect", null)
+        }
+      }
     }
   }
 
@@ -54,15 +62,24 @@ resource "digitalocean_kubernetes_cluster" "main" {
 #Description : Provides a DigitalOcean Kubernetes node pool resource. While the default node pool must be defined in the digitalocean_kubernetes_cluster resource, this resource can be used to add additional ones to a cluster.
 ##--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 resource "digitalocean_kubernetes_node_pool" "main" {
-  for_each = var.enabled ? var.node_pools : {}
+  for_each = var.enabled ? var.app_node_pools : {}
 
   cluster_id = join("", digitalocean_kubernetes_cluster.main[*].id)
-  name       = lookup(each.value, "name", "node-pool")
+  name       = lookup(each.value, "name", "critical")
   size       = lookup(each.value, "size", "s-1vcpu-2gb")
   node_count = lookup(each.value, "node_count", 1)
   auto_scale = lookup(each.value, "auto_scale", true)
   min_nodes  = lookup(each.value, "min_nodes", 1)
   max_nodes  = lookup(each.value, "max_nodes", 2)
   tags       = lookup(each.value, "tags", null)
   labels     = lookup(each.value, "labels", null)
+
+  dynamic "taint" {
+    for_each = lookup(each.value, "taint", [])
+    content {
+      key    = taint.value["key"]
+      value  = taint.value["value"]
+      effect = taint.value["effect"]
+    }
+  }
 }

outputs.tf

@@ -49,3 +49,7 @@ output "maintenance_policy_day" {
   value       = digitalocean_kubernetes_cluster.main[*].maintenance_policy
   description = "A block representing the cluster's maintenance window. Updates will be applied within this window."
 }
+
+output "local_file" {
+  value = join("", digitalocean_kubernetes_cluster.main[*].kube_config[0].raw_config)
+}

variables.tf

@@ -72,13 +72,13 @@ variable "registry_integration" {
   description = "Enables or disables the DigitalOcean container registry integration for the cluster. This requires that a container registry has first been created for the account."
 }
 
-variable "default_node_pool" {
+variable "critical_node_pool" {
   type        = any
   default     = {}
   description = "Cluster default node pool."
 }
 
-variable "node_pools" {
+variable "app_node_pools" {
   type        = map(any)
   default     = {}
   description = "Cluster additional node pools."
@@ -101,3 +101,12 @@ variable "maintenance_policy" {
   }
   description = "Define the window updates are to be applied when auto upgrade is set to true."
 }
+//variable "taint" {
+//  type = any
+//  default = {}
+//}
+
+variable "kubeconfig_path" {
+  description = "The path to save the kubeconfig to"
+  default     = "./kubeonfig"
+}