How can we fetch Redis Cache Server hostname and primary access key and update in azure function app settings

Terraform
#1

am trying to create the redis cache server and update the redis hostname & Primary access key to Azure function app setting to connect the azure function app to connect redis server.
below is my code
Redi Cache server:
resource “azurerm_redis_cache” “redis” {
name = var.redis_cache_name
location = var.location
resource_group_name = var.resource_group_name
capacity = var.capacity
family = var.family
sku_name = var.sku_name

enable_non_ssl_port = false

redis_configuration {
maxmemory_policy = “allkeys-lru” # Eviction policy
maxmemory_reserved = “30”
maxfragmentationmemory_reserved = “30”
}
}
output “redis_hostname” {
value = azurerm_redis_cache.redis.name
}

output “redis_primary_key” {
value = azurerm_redis_cache.redis.primary_access_key
}

Main.tf:
module “redis_cache” {
source = “./modules/redis_cache”
redis_cache_name = var.redis_cache_name
location = var.location
resource_group_name = module.resource_group.web_app_resource_group_id
capacity = var.redis_capacity
family = var.redis_family
sku_name = var.redis_sku_name
redis_subnet_id = module.network.api_plink_subnet_id
vnet_id = module.network.vnet_id
}
output “redis_cache” {
value = {
hostname = module.redis_cache.redis_hostname
key = module.redis_cache.redis_primary_access_key
}
}
#App Service
module “private_web_app” {
source = “./modules/private_web_app”
private_api_app_name = var.api_app_name
resource_group_name = module.resource_group.web_app_resource_group_id
location = var.location
app_service_plan_id = module.app_service_plan.app_service_plan_id
private_api_subnet_id = module.network.private_api_subnet_id
cosmosdb_account_endpoint = module.database.cosmosdb_account_endpoint
cosmosdb_account_key = module.database.cosmosdb_account_key
redis_hostname = module.redis_cache.redis_hostname
redis_primary_key = module.redis_cache.redis_primary_access_key
vnet_id = module.network.vnet_id
}

getting below error during the validation
Error: Unsupported attribute
│
│ on main.tf line 67, in module “private_web_app”:
│ 67: redis_hostname = module.redis_cache.redis_hostname
│ ├────────────────
│ │ module.redis_cache is a object
│
│ This object does not have an attribute named “redis_hostname”.
╵
╷
│ Error: Unsupported attribute
│
│ on main.tf line 68, in module “private_web_app”:
│ 68: redis_primary_key = module.redis_cache.redis_primary_access_key
│ ├────────────────
│ │ module.redis_cache is a object
│
│ This object does not have an attribute named “redis_primary_access_key”.

#2

Please put your terraform code in code blocks, </> in the text entry menu bar.

#3 
resource "azurerm_redis_cache" "redis" {
  name                = var.redis_cache_name
  location            = var.location
  resource_group_name = var.resource_group_name
  capacity            = var.capacity
  family              = var.family
  sku_name            = var.sku_name

  enable_non_ssl_port = false

  redis_configuration {
    maxmemory_policy = "allkeys-lru" # Eviction policy
    maxmemory_reserved  = "30"
    maxfragmentationmemory_reserved = "30"
  }
}


output "redis_hostname" {
  value = azurerm_redis_cache.redis.name
}

output "redis_primary_key" {
  value = azurerm_redis_cache.redis.primary_access_key
}

Main.tf in the root directory

module "redis_cache" {
  source = "./modules/redis_cache"
  redis_cache_name          = var.redis_cache_name
  location                  = var.location
  resource_group_name       = module.resource_group.web_app_resource_group_id
  capacity                  = var.redis_capacity
  family                    = var.redis_family
  sku_name                  = var.redis_sku_name
  redis_subnet_id           = module.network.api_plink_subnet_id
  vnet_id                   = module.network.vnet_id
}
module "private_web_app" {
  source = "./modules/private_web_app"
  private_api_app_name      = var.api_app_name
  resource_group_name       = module.resource_group.web_app_resource_group_id
  location                  = var.location
  app_service_plan_id       = module.app_service_plan.app_service_plan_id
  private_api_subnet_id     = module.network.private_api_subnet_id
  cosmosdb_account_endpoint = module.database.cosmosdb_account_endpoint
  cosmosdb_account_key      = module.database.cosmosdb_account_key
  redis_hostname            = module.redis_cache.redis_hostname
  redis_primary_key         = module.redis_cache.redis_primary_access_key
  vnet_id                   = module.network.vnet_id
}

below is the output.tf in the root directory

output "redis_cache" {
  value = {
    hostname = module.redis_cache.redis_hostname
    key      = module.redis_cache.redis_primary_access_key
  }
}
#4

Where is the source code for the modules?

#5

it’s in Azure repos and it’s my folder structure

image
image363×792 12.8 KB

#6

can i get the help to resolve my issues

#7

Please share the modules.

#8

Shall i attach the code here or is there any other way to share?

#9

It is probably best put in a public GitHub repo.

#10

Hi,

here is the GitHub link. could you please check and help me to resolve the issue
BalaGit/webproject (github.com)

#11

You didn’t name the outputs file correctly in your redis module, it was missing the tf extension:

renamed:    modules/redis_cache/output -> modules/redis_cache/output.tf

Validates for me then.

Also you might want to run terraform format.

#12

Thanks for the support