MON-90 Azure API Management monitors
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Laurent Piroelle
Jérôme Respaut
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cloud/azure/apimanagement/README.md
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cloud/azure/apimanagement/README.md
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Azure API Management Datadog monitors
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=====================================
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How to use this module
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----------------------
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```
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module "datadog-monitors-azure-apimanagement" {
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source = "git::ssh://git@bitbucket.org/morea/terraform.feature.datadog.git//cloud/azure/apimanagement?ref={revision}"
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message = "${module.datadog-message-alerting.alerting-message}"
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environment = "${var.environment}"
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}
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```
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Purpose
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-------
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Creates Datadog monitors with the following checks :
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* Service status
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* Failed requests ratio
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* Other requests ratio
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* Unauthorized requests ratio
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* Successful requests ratio
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Inputs
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------
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| Name | Description | Type | Default | Required |
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|------|-------------|:----:|:-----:|:-----:|
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| delay | Delay in seconds for the metric evaluation | string | `600` | no |
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| environment | Architecture environment | string | - | yes |
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| failed_requests_threshold_critical | Maximum acceptable percent of failed requests | string | `5` | no |
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| filter_tags_custom | Tags used for custom filtering when filter_tags_use_defaults is false | string | `*` | no |
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| filter_tags_use_defaults | Use default filter tags convention | string | `true` | no |
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| message | Message sent when a Redis monitor is triggered | string | - | yes |
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| other_requests_threshold_critical | Maximum acceptable percent of other requests | string | `5` | no |
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| successful_requests_threshold_critical | Minimum acceptable percent of successful requests | string | `90` | no |
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| unauthorized_requests_threshold_critical | Maximum acceptable percent of unauthorized requests | string | `5` | no |
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Related documentation
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---------------------
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Azure API Management metrics documentation: [https://docs.microsoft.com/en-us/azure/api-management/api-management-howto-use-azure-monitor](https://docs.microsoft.com/en-us/azure/api-management/api-management-howto-use-azure-monitor)
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cloud/azure/apimanagement/inputs.tf
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cloud/azure/apimanagement/inputs.tf
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# Global Terraform
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variable "environment" {
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description = "Architecture environment"
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type = "string"
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}
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# Global DataDog
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variable "message" {
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description = "Message sent when a Redis monitor is triggered"
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}
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variable "delay" {
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description = "Delay in seconds for the metric evaluation"
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default = 600
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}
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variable "filter_tags_use_defaults" {
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description = "Use default filter tags convention"
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default = "true"
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}
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variable "filter_tags_custom" {
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description = "Tags used for custom filtering when filter_tags_use_defaults is false"
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default = "*"
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}
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# Azure API Management specific
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variable "failed_requests_threshold_critical" {
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description = "Maximum acceptable percent of failed requests"
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default = 5
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}
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variable "other_requests_threshold_critical" {
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description = "Maximum acceptable percent of other requests"
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default = 5
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}
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variable "unauthorized_requests_threshold_critical" {
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description = "Maximum acceptable percent of unauthorized requests"
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default = 5
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}
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variable "successful_requests_threshold_critical" {
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description = "Minimum acceptable percent of successful requests"
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default = 90
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}
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cloud/azure/apimanagement/monitors-azure-apimanagement.tf
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cloud/azure/apimanagement/monitors-azure-apimanagement.tf
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data "template_file" "filter" {
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template = "$${filter}"
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vars {
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filter = "${var.filter_tags_use_defaults == "true" ?
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format("dd_monitoring:enabled,dd_azure_apimanagement:enabled,env:%s", var.environment) :
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"${var.filter_tags_custom}"}"
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}
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}
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resource "datadog_monitor" "apimgt_status" {
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name = "[${var.environment}] API Management status is not ok on {{name}}"
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message = "${var.message}"
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query = <<EOF
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avg(last_5m):avg:azure.apimanagement_service.status{${data.template_file.filter.rendered}} by {name,resource_group,region} < 1
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EOF
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type = "metric alert"
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thresholds {
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critical = 1
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}
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notify_no_data = true
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evaluation_delay = "${var.delay}"
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renotify_interval = 0
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notify_audit = false
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timeout_h = 0
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include_tags = true
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locked = false
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require_full_window = true
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new_host_delay = "${var.delay}"
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no_data_timeframe = 20
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tags = ["env:${var.environment}", "resource:apimanagement", "team:azure", "provider:azure"]
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}
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resource "datadog_monitor" "apimgt_failed_requests" {
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name = "[${var.environment}] API Management {{name}} too much failed requests"
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message = "${var.message}"
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query = <<EOF
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avg(last_5m): (
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avg:azure.apimanagement_service.failed_requests{${data.template_file.filter.rendered}} * 100 /
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avg:azure.apimanagement_service.total_requests{${data.template_file.filter.rendered}}
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by {name,resource_group,region}
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) > ${var.failed_requests_threshold_critical}
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EOF
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thresholds {
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critical = "${var.failed_requests_threshold_critical}"
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}
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type = "metric alert"
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notify_no_data = false
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notify_audit = false
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timeout_h = 0
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include_tags = true
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locked = false
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require_full_window = true
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new_host_delay = "${var.delay}"
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evaluation_delay = "${var.delay}"
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renotify_interval = 0
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no_data_timeframe = 20
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tags = ["env:${var.environment}", "resource:apimanagement", "team:azure", "provider:azure"]
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}
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resource "datadog_monitor" "apimgt_other_requests" {
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name = "[${var.environment}] API Management {{name}} too much other requests"
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message = "${var.message}"
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query = <<EOF
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avg(last_5m): (
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avg:azure.apimanagement_service.other_requests{${data.template_file.filter.rendered}} * 100 /
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avg:azure.apimanagement_service.total_requests{${data.template_file.filter.rendered}}
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by {name,resource_group,region}
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) > ${var.other_requests_threshold_critical}
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EOF
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thresholds {
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critical = "${var.other_requests_threshold_critical}"
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}
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type = "metric alert"
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notify_no_data = false
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notify_audit = false
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timeout_h = 0
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include_tags = true
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locked = false
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require_full_window = true
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new_host_delay = "${var.delay}"
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evaluation_delay = "${var.delay}"
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renotify_interval = 0
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no_data_timeframe = 20
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tags = ["env:${var.environment}", "resource:apimanagement", "team:azure", "provider:azure"]
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}
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resource "datadog_monitor" "apimgt_unauthorized_requests" {
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name = "[${var.environment}] API Management {{name}} too much unauthorized requests"
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message = "${var.message}"
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query = <<EOF
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avg(last_5m): (
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avg:azure.apimanagement_service.failed_requests{${data.template_file.filter.rendered}} * 100 /
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avg:azure.apimanagement_service.total_requests{${data.template_file.filter.rendered}}
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by {name,resource_group,region}
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) > ${var.unauthorized_requests_threshold_critical}
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EOF
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thresholds {
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critical = "${var.unauthorized_requests_threshold_critical}"
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}
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type = "metric alert"
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notify_no_data = false
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notify_audit = false
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timeout_h = 0
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include_tags = true
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locked = false
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require_full_window = true
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new_host_delay = "${var.delay}"
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evaluation_delay = "${var.delay}"
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renotify_interval = 0
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no_data_timeframe = 20
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tags = ["env:${var.environment}", "resource:apimanagement", "team:azure", "provider:azure"]
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}
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resource "datadog_monitor" "apimgt_successful_requests" {
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name = "[${var.environment}] API Management {{name}} successful requests rate too low"
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message = "${var.message}"
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query = <<EOF
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avg(last_5m): (
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avg:azure.apimanagement_service.successful_requests{${data.template_file.filter.rendered}} * 100 /
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avg:azure.apimanagement_service.total_requests{${data.template_file.filter.rendered}}
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by {name,resource_group,region}
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) < ${var.successful_requests_threshold_critical}
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EOF
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thresholds {
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critical = "${var.successful_requests_threshold_critical}"
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}
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type = "metric alert"
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notify_no_data = true
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notify_audit = false
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timeout_h = 0
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include_tags = true
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locked = false
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require_full_window = true
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new_host_delay = "${var.delay}"
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evaluation_delay = "${var.delay}"
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renotify_interval = 0
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no_data_timeframe = 20
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tags = ["env:${var.environment}", "resource:apimanagement", "team:azure", "provider:azure"]
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}
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