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Xenit Terraform modules

This repository contains the Xenit Terraform modules.

Module groups

Contributing

Read the contributing guide to get started writing modules.

Style Guide

These modules use tflint to enforce best practices, check the tflint configuration file in the modules directory for details about which rules are enabled. The are also provider specific style guides in the individual directories for standards that only apply to that provider. Following the standards below however will help you avoid the most common rule violations.

Every resource name should be lowercase and snakecased. No other format should be used in the resource names. The role assignment for a cluster admin is named cluster_admin and not clusterAdmin.

resource "azurerm_role_assignment" "cluster_admin" {
  scope = azurerm_kubernetes_cluster.this.id
  role_definition_name = "Azure Kubernetes Service Cluster User Role"
  principal_id         = var.aad_groups.cluster_admin.id
}

Resources that only have a single instance and no fitting name that distinguishes it should use the name this. The reasoning is that it is more DRY than reporting the resource type like aks which other people may do. However if there is a fitting name please use it. Additionally please do not have to resources of the same type where one of them is called this and the other has a specific name, instead give both resources a specific name.

resource "azurerm_kubernetes_cluster" "this" {
  name                            = "aks-${var.environment}-${var.location_short}-${var.name}${var.aks_name_suffix}"
  location                        = data.azurerm_resource_group.this.location
  resource_group_name             = data.azurerm_resource_group.this.name
  dns_prefix                      = "aks-${var.environment}-${var.location_short}-${var.name}${var.aks_name_suffix}"
}