feat: Kubeconfig file should not be world or group readable by default (#1114)

Co-authored-by: Thierno IB. BARRY <ibrahima.br@gmail.com>

README.md

@@ -251,6 +251,7 @@ Apache 2 Licensed. See [LICENSE](https://github.com/terraform-aws-modules/terraf
 | <a name="input_kubeconfig_aws_authenticator_command"></a> [kubeconfig\_aws\_authenticator\_command](#input\_kubeconfig\_aws\_authenticator\_command) | Command to use to fetch AWS EKS credentials. | `string` | `"aws-iam-authenticator"` | no |
 | <a name="input_kubeconfig_aws_authenticator_command_args"></a> [kubeconfig\_aws\_authenticator\_command\_args](#input\_kubeconfig\_aws\_authenticator\_command\_args) | Default arguments passed to the authenticator command. Defaults to [token -i $cluster\_name]. | `list(string)` | `[]` | no |
 | <a name="input_kubeconfig_aws_authenticator_env_variables"></a> [kubeconfig\_aws\_authenticator\_env\_variables](#input\_kubeconfig\_aws\_authenticator\_env\_variables) | Environment variables that should be used when executing the authenticator. e.g. { AWS\_PROFILE = "eks"}. | `map(string)` | `{}` | no |
+| <a name="input_kubeconfig_file_permission"></a> [kubeconfig\_file\_permission](#input\_kubeconfig\_file\_permission) | File permission of the Kubectl config file containing cluster configuration saved to `config_output_path.` | `string` | `"0600"` | no |
 | <a name="input_kubeconfig_name"></a> [kubeconfig\_name](#input\_kubeconfig\_name) | Override the default name used for items kubeconfig. | `string` | `""` | no |
 | <a name="input_manage_aws_auth"></a> [manage\_aws\_auth](#input\_manage\_aws\_auth) | Whether to apply the aws-auth configmap file. | `bool` | `true` | no |
 | <a name="input_manage_cluster_iam_resources"></a> [manage\_cluster\_iam\_resources](#input\_manage\_cluster\_iam\_resources) | Whether to let the module manage cluster IAM resources. If set to false, cluster\_iam\_role\_name must be specified. | `bool` | `true` | no |

kubectl.tf

@@ -2,6 +2,6 @@ resource "local_file" "kubeconfig" {
   count                = var.write_kubeconfig && var.create_eks ? 1 : 0
   content              = local.kubeconfig
   filename             = substr(var.config_output_path, -1, 1) == "/" ? "${var.config_output_path}kubeconfig_${var.cluster_name}" : var.config_output_path
-  file_permission      = "0644"
+  file_permission      = var.kubeconfig_file_permission
   directory_permission = "0755"
 }

variables.tf

@@ -38,6 +38,12 @@ variable "config_output_path" {
   default     = "./"
 }
 
+variable "kubeconfig_file_permission" {
+  description = "File permission of the Kubectl config file containing cluster configuration saved to `config_output_path.`"
+  type        = string
+  default     = "0600"
+}
+
 variable "write_kubeconfig" {
   description = "Whether to write a Kubectl config file containing the cluster configuration. Saved to `config_output_path`."
   type        = bool