Merge branch 'MON-418-add-azure-load-balancer' into 'master'

MON-418 Azure Load Balancer monitors added

Closes MON-418

See merge request claranet/pt-monitoring/projects/datadog/terraform/monitors!30

README.md

@@ -105,6 +105,7 @@ The `//` is very important, it's a terraform specific syntax used to separate gi
 		- [eventhub](https://git.fr.clara.net/claranet/cloudnative/projects/datadog/terraform/monitors/tree/master/cloud/azure/eventhub/)
 		- [iothubs](https://git.fr.clara.net/claranet/cloudnative/projects/datadog/terraform/monitors/tree/master/cloud/azure/iothubs/)
 		- [keyvault](https://git.fr.clara.net/claranet/cloudnative/projects/datadog/terraform/monitors/tree/master/cloud/azure/keyvault/)
+		- [load-balancer](https://git.fr.clara.net/claranet/cloudnative/projects/datadog/terraform/monitors/tree/master/cloud/azure/load-balancer/)
 		- [mysql](https://git.fr.clara.net/claranet/cloudnative/projects/datadog/terraform/monitors/tree/master/cloud/azure/mysql/)
 		- [postgresql](https://git.fr.clara.net/claranet/cloudnative/projects/datadog/terraform/monitors/tree/master/cloud/azure/postgresql/)
 		- [redis](https://git.fr.clara.net/claranet/cloudnative/projects/datadog/terraform/monitors/tree/master/cloud/azure/redis/)

cloud/azure/load-balancer/README.md

@@ -0,0 +1,47 @@
+# CLOUD AZURE LOAD-BALANCER DataDog monitors
+
+## How to use this module
+
+```
+module "datadog-monitors-cloud-azure-load-balancer" {
+  source = "git::ssh://git@git.fr.clara.net/claranet/cloudnative/projects/datadog/terraform/monitors.git//cloud/azure/load-balancer?ref={revision}"
+
+  environment = "${var.environment}"
+  message     = "${module.datadog-message-alerting.alerting-message}"
+}
+
+```
+
+## Purpose
+
+Creates DataDog monitors with the following checks:
+
+- Load Balancer is unreachable
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|:----:|:-----:|:-----:|
+| environment | Architecture environment | string | n/a | yes |
+| evaluation\_delay | Delay in seconds for the metric evaluation | string | `"900"` | no |
+| filter\_tags\_custom | Tags used for custom filtering when filter_tags_use_defaults is false | string | `"*"` | no |
+| filter\_tags\_custom\_excluded | Tags excluded for custom filtering when filter_tags_use_defaults is false | string | `""` | no |
+| filter\_tags\_use\_defaults | Use default filter tags convention | string | `"true"` | no |
+| message | Message sent when a monitor is triggered | string | n/a | yes |
+| new\_host\_delay | Delay in seconds before monitor new resource | string | `"300"` | no |
+| status\_enabled | Flag to enable Load Balancer status monitor | string | `"true"` | no |
+| status\_extra\_tags | Extra tags for Load Balancer status monitor | list | `[]` | no |
+| status\_message | Custom message for Load Balancer status monitor | string | `""` | no |
+| status\_silenced | Groups to mute for Load Balancer status monitor | map | `{}` | no |
+| status\_time\_aggregator | Monitor aggregator for Load Balancer status [available values: min, max or avg] | string | `"max"` | no |
+| status\_timeframe | Monitor timeframe for Load Balancer status [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `"last_5m"` | no |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| loadbalancer\_status\_id | id for monitor loadbalancer_status |
+
+## Related documentation
+
+DataDog documentation: [https://docs.datadoghq.com/integrations/azure/?tab=azurecliv20](https://docs.datadoghq.com/integrations/azure/?tab=azurecliv20)

cloud/azure/load-balancer/inputs.tf

@@ -0,0 +1,69 @@
+variable "environment" {
+  description = "Architecture environment"
+  type        = "string"
+}
+
+variable "filter_tags_use_defaults" {
+  description = "Use default filter tags convention"
+  default     = "true"
+}
+
+variable "filter_tags_custom" {
+  description = "Tags used for custom filtering when filter_tags_use_defaults is false"
+  default     = "*"
+}
+
+variable "filter_tags_custom_excluded" {
+  description = "Tags excluded for custom filtering when filter_tags_use_defaults is false"
+  default     = ""
+}
+
+variable "message" {
+  description = "Message sent when a monitor is triggered"
+}
+
+variable "evaluation_delay" {
+  description = "Delay in seconds for the metric evaluation"
+  default     = 900
+}
+
+variable "new_host_delay" {
+  description = "Delay in seconds before monitor new resource"
+  default     = 300
+}
+
+# Azure Load Balancer specific variables
+variable "status_enabled" {
+  description = "Flag to enable Load Balancer status monitor"
+  type        = "string"
+  default     = "true"
+}
+
+variable "status_silenced" {
+  description = "Groups to mute for Load Balancer status monitor"
+  type        = "map"
+  default     = {}
+}
+
+variable "status_message" {
+  description = "Custom message for Load Balancer status monitor"
+  type        = "string"
+  default     = ""
+}
+
+variable "status_time_aggregator" {
+  description = "Monitor aggregator for Load Balancer status [available values: min, max or avg]"
+  type        = "string"
+  default     = "max"
+}
+
+variable "status_timeframe" {
+  description = "Monitor timeframe for Load Balancer status [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`]"
+  default     = "last_5m"
+}
+
+variable "status_extra_tags" {
+  description = "Extra tags for Load Balancer status monitor"
+  type        = "list"
+  default     = []
+}

cloud/azure/load-balancer/modules.tf

@@ -0,0 +1,9 @@
+module "filter-tags" {
+  source = "../../../common/filter-tags"
+
+  environment                 = "${var.environment}"
+  resource                    = "azure_load-balancer"
+  filter_tags_use_defaults    = "${var.filter_tags_use_defaults}"
+  filter_tags_custom          = "${var.filter_tags_custom}"
+  filter_tags_custom_excluded = "${var.filter_tags_custom_excluded}"
+}

cloud/azure/load-balancer/monitors-load-balancer.tf

@@ -0,0 +1,28 @@
+resource "datadog_monitor" "loadbalancer_status" {
+  count = "${var.status_enabled ? 1 : 0}"
+
+  name    = "[${var.environment}] Load Balancer is unreachable"
+  message = "${coalesce(var.status_message, var.message)}"
+
+  query = <<EOF
+      ${var.status_time_aggregator}(${var.status_timeframe}): (
+        avg:azure.network_loadbalancers.status${module.filter-tags.query_alert} by {resource_group,region,name}
+      ) < 1
+  EOF
+
+  type = "metric alert"
+
+  silenced = "${var.status_silenced}"
+
+  notify_no_data      = true
+  evaluation_delay    = "${var.evaluation_delay}"
+  renotify_interval   = 0
+  notify_audit        = false
+  timeout_h           = 0
+  include_tags        = true
+  locked              = false
+  require_full_window = false
+  new_host_delay      = "${var.new_host_delay}"
+
+  tags = ["env:${var.environment}", "type:cloud", "provider:azure", "resource:load-balancer", "team:claranet", "created-by:terraform", "${var.status_extra_tags}"]
+}

cloud/azure/load-balancer/outputs.tf

@@ -0,0 +1,4 @@
+output "loadbalancer_status_id" {
+  description = "id for monitor loadbalancer_status"
+  value       = "${datadog_monitor.loadbalancer_status.*.id}"
+}