Terraform Alerts for Azure Functions - azure

Question

I am trying to research if it is possible to create alerts for azure functions via terraform.
My goal is to create a general rule that can be setup for on going functions that would alert us if an automated/timed function fails for x amount of times

Answer 1

I tried to reproduce the same in my environment to create the Alerts in Function app using Terraform:
Terraform code.
provider "azurerm" {
features {}
}
resource "azurerm_resource_group" "thejesh-rg" {
name = "Thejesh-RG-resources"
location = "West Europe"
}
resource "azurerm_storage_account" "thejeshstorage" {
name = "thejeshstorageaccount"
resource_group_name = azurerm_resource_group.thejesh-rg.name
location = azurerm_resource_group.thejesh-rg.location
account_tier = "Standard"
account_replication_type = "LRS"
}
resource "azurerm_service_plan" "thejeshsp" {
name = "thejeshsp-app-service-plan"
resource_group_name = azurerm_resource_group.thejesh-rg.name
location = azurerm_resource_group.thejesh-rg.location
os_type = "Linux"
sku_name = "P1v2"
}
resource "azurerm_linux_function_app" "thejesh" {
name = "thejesh-linux-function-app"
resource_group_name = azurerm_resource_group.thejesh-rg.name
location = azurerm_resource_group.thejesh-rg.location
storage_account_name = azurerm_storage_account.thejeshstorage.name
storage_account_access_key = azurerm_storage_account.thejeshstorage.primary_access_key
service_plan_id = azurerm_service_plan.thejeshsp.id
site_config {}
}
resource "azurerm_monitor_action_group" "actiongroup" {
name = "thejesh-actiongroup"
resource_group_name = azurerm_resource_group.thejesh-rg.name
short_name = "exampleact"
email_receiver{
email_address = "Email-ID"
name = "sendtoadmin"
}
}
resource "azurerm_monitor_metric_alert" "metrics" {
name = "theja-metricalert"
resource_group_name = azurerm_resource_group.thejesh-rg.name
scopes = [azurerm_linux_function_app.thejesh.id]
description = "Action will be triggered when Transactions count is greater than 1."
criteria {
metric_namespace = "Microsoft.Web/sites"
metric_name = "Requests"
aggregation = "Total"
operator = "GreaterThan"
threshold = "1"
}
action {
action_group_id = azurerm_monitor_action_group.actiongroup.id
}
}
Terraform Plan:
Terraform Apply
Once ran the code resources are created.
Alert notification.
Successfully received email.

Answer 2

Yes it's possible. See the documentation here.
Sample taken from the docs is creating a metric alert:
resource "azurerm_resource_group" "example" {
name = "example-resources"
location = "West Europe"
}
resource "azurerm_storage_account" "to_monitor" {
name = "examplestorageaccount"
resource_group_name = azurerm_resource_group.example.name
location = azurerm_resource_group.example.location
account_tier = "Standard"
account_replication_type = "LRS"
}
resource "azurerm_monitor_action_group" "main" {
name = "example-actiongroup"
resource_group_name = azurerm_resource_group.example.name
short_name = "exampleact"
webhook_receiver {
name = "callmyapi"
service_uri = "http://example.com/alert"
}
}
resource "azurerm_monitor_metric_alert" "example" {
name = "example-metricalert"
resource_group_name = azurerm_resource_group.example.name
scopes = [azurerm_storage_account.to_monitor.id]
description = "Action will be triggered when Transactions count is greater than 50."
criteria {
metric_namespace = "Microsoft.Storage/storageAccounts"
metric_name = "Transactions"
aggregation = "Total"
operator = "GreaterThan"
threshold = 50
dimension {
name = "ApiName"
operator = "Include"
values = ["*"]
}
}
action {
action_group_id = azurerm_monitor_action_group.main.id
}
}