How to handle json files for terraform deployment - terraform

Question

I am a new in terraform and using below terraform template to create Azure App service plan, App service and App insight together
# Configure the Azure provider
terraform {
required_providers {
azurerm = {
source = "hashicorp/azurerm"
version = "~> 2.98"
}
}
required_version = ">= 1.1.6"
}
provider "azurerm" {
features { }
}
resource "azurerm_application_insights" "appService-app_insights" {
name ="${var.prefix}-${var.App_Insights}"
location = var.Location
resource_group_name = var.ResourceGroup
application_type = "web" # Node.JS ,java
}
resource "azurerm_app_service" "appservice" {
name ="${var.prefix}-${var.appservice_name}"
location = var.Location
resource_group_name = var.ResourceGroup
app_service_plan_id = azurerm_app_service_plan.appserviceplan.id
https_only = true
site_config {
linux_fx_version = "NODE|10.14"
}
app_settings = {
# "SOME_KEY" = "some-value"
"APPINSIGHTS_INSTRUMENTATIONKEY" = azurerm_application_insights.appService-app_insights.instrumentation_key
}
depends_on = [
azurerm_app_service_plan.appserviceplan,
azurerm_application_insights.appService-app_insights
]
}
# create the AppService Plan for the App Service hosting our website
resource "azurerm_app_service_plan" "appserviceplan" {
name ="${var.prefix}-${var.app_service_plan_name}"
location = var.Location
resource_group_name = var.ResourceGroup
kind ="linux"
reserved = true
sku {
tier = "Standard" #
size = "S1"
}
}
I am generating a variable.tf file at runtime which is quite simple in this case
variable "ResourceGroup" {
default = "TerraRG"
}
variable "Location" {
default = "westeurope"
}
variable "app_service_plan_name" {
default = "terra-asp"
}
variable "appservice_name" {
default = "terra-app"
}
variable "prefix" {
default = "pre"
}
variable "App_Insights" {
default = "terra-ai"
}
Everything working good till here.
No I am trying to extend my infra and I want to go with multiple App + App Service Plan + App Insight which might look like below Json
{
"_comment": "Web App Config",
"webapps": [
{
"Appservice": "app1",
"Appserviceplan": "asp1",
"InstrumentationKey": "abc"
},
{
"Appservice": "app2",
"Appserviceplan": "asp2",
"InstrumentationKey": "def"
},
{
"Appservice": "app3",
"Appserviceplan": "asp2",
"InstrumentationKey": "def"
}
]
}
How can I target such a resource creation.
Should I think on creating App Service Plan First and App Insight and then should plan creating Apps. What could be a better approach for this scenario.

Answer 1

Since app1,app2,app3 are not globally unique i have tried with different name.
I have tried with app service name testapprahuluni12345,testapp12346and testapp12347.
main.tf
# Configure the Azure provider
terraform {
required_providers {
azurerm = {
source = "hashicorp/azurerm"
version = "~> 2.98"
}
}
}
provider "azurerm" {
features { }
}
resource "azurerm_application_insights" "appService-app_insights" {
name ="${var.prefix}-${var.App_Insights}"
location = var.Location
resource_group_name = var.ResourceGroup
application_type = "web" # Node.JS ,java
}
resource "azurerm_app_service_plan" "appserviceplan" {
count = length(var.app_service_plan_name)
name = var.app_service_plan_name[count.index]
location = var.Location
resource_group_name = var.ResourceGroup
kind ="linux"
reserved = true
sku {
tier = "Standard" #
size = "S1"
}
}
# create the AppService Plan for the App Service hosting our website
resource "azurerm_app_service" "appservice" {
count = length(var.app_names)
name = var.app_names[count.index]
location = var.Location
resource_group_name = var.ResourceGroup
app_service_plan_id = azurerm_app_service_plan.appserviceplan[count.index].id
https_only = true
site_config {
linux_fx_version = "NODE|10.14"
}
app_settings = {
# "SOME_KEY" = "some-value"
"APPINSIGHTS_INSTRUMENTATIONKEY" = azurerm_application_insights.appService-app_insights.instrumentation_key
}
depends_on = [
azurerm_app_service_plan.appserviceplan,
azurerm_application_insights.appService-app_insights
]
}
variable.tf
variable "ResourceGroup" {
default = "v-XXXXX--ree"
}
variable "Location" {
default = "West US 2"
}
/*variable "app_service_plan_name" {
default = "terra-asp"
}
variable "appservice_name" {
default = "terra-app"
}
*/
variable "prefix" {
default = "pre"
}
variable "App_Insights" {
default = "terra-ai"
}
variable "app_names" {
description = "App Service Names"
type = list(string)
default = ["testapprahuluni12345", "testapp12346", "testapp12347"]
}
variable "app_service_plan_name" {
description = "App Service Plan Name"
type = list(string)
default = ["asp1", "asp2", "asp2"]
}
OutPut--