MON-557: Create monitor sqlserver.can_connect

database/sqlserver/README.md

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+# DATABASE SQL SERVER DataDog monitors
+
+## How to use this module
+
+```
+module "datadog-monitors-database-sqlserver" {
+  source = "claranet/monitors/datadog//database/sqlserver"
+  version = "{revision}"
+
+  environment = var.environment
+  message     = module.datadog-message-alerting.alerting-message
+}
+
+```
+
+## Purpose
+
+Creates DataDog monitors with the following checks:
+
+- SQL Server server does not respond
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|:----:|:-----:|:-----:|
+| environment | Environment | string | n/a | yes |
+| evaluation\_delay | Delay in seconds for the metric evaluation | string | `"15"` | 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 an alert is triggered | string | n/a | yes |
+| new\_host\_delay | Delay in seconds for the metric evaluation | string | `"300"` | no |
+| notify\_no\_data | Will raise no data alert if set to true | string | `"true"` | no |
+| prefix\_slug | Prefix string to prepend between brackets on every monitors names | string | `""` | no |
+| sqlserver\_availability\_enabled | Flag to enable SQL Server availability monitor | string | `"true"` | no |
+| sqlserver\_availability\_extra\_tags | Extra tags for SQL Server availability monitor | list(string) | `[]` | no |
+| sqlserver\_availability\_message | Custom message for SQL Server availability monitor | string | `""` | no |
+| sqlserver\_availability\_no\_data\_timeframe | SQL Server availability monitor no data timeframe | string | `"10"` | no |
+| sqlserver\_availability\_threshold\_warning | SQL Server availability monitor (warning threshold) | string | `"3"` | no |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| sqlserver\_availability\_id | id for monitor sqlserver\_availability |
+
+## Related documentation
+
+DataDog documentation: [https://docs.datadoghq.com/integrations/sqlserver/](https://docs.datadoghq.com/integrations/sqlserver/)

database/sqlserver/inputs.tf

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+variable "environment" {
+  description = "Environment"
+  type        = string
+}
+
+variable "evaluation_delay" {
+  description = "Delay in seconds for the metric evaluation"
+  default     = 15
+}
+
+variable "new_host_delay" {
+  description = "Delay in seconds for the metric evaluation"
+  default     = 300
+}
+
+variable "prefix_slug" {
+  description = "Prefix string to prepend between brackets on every monitors names"
+  default     = ""
+}
+
+variable "notify_no_data" {
+  description = "Will raise no data alert if set to true"
+  default     = true
+}
+
+variable "message" {
+  description = "Message sent when an alert is triggered"
+}
+
+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     = ""
+}
+
+# SQL Server specific
+
+#################################
+###   SQL Server availability      ###
+#################################
+
+variable "sqlserver_availability_enabled" {
+  description = "Flag to enable SQL Server availability monitor"
+  type        = string
+  default     = "true"
+}
+
+variable "sqlserver_availability_extra_tags" {
+  description = "Extra tags for SQL Server availability monitor"
+  type        = list(string)
+  default     = []
+}
+
+variable "sqlserver_availability_message" {
+  description = "Custom message for SQL Server availability monitor"
+  type        = string
+  default     = ""
+}
+
+variable "sqlserver_availability_threshold_warning" {
+  description = "SQL Server availability monitor (warning threshold)"
+  type        = string
+  default     = 3
+}
+
+variable "sqlserver_availability_no_data_timeframe" {
+  description = "SQL Server availability monitor no data timeframe"
+  type        = string
+  default     = 10
+}

database/sqlserver/modules.tf

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+module "filter-tags" {
+  source = "../../common/filter-tags"
+
+  environment                 = var.environment
+  resource                    = "mysql"
+  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
+}
+

database/sqlserver/monitors-sqlserver.tf

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+resource "datadog_monitor" "sqlserver_availability" {
+  count   = var.sqlserver_availability_enabled == "true" ? 1 : 0
+  name    = "${var.prefix_slug == "" ? "" : "[${var.prefix_slug}]"}[${var.environment}] SQL Server server does not respond"
+  message = coalesce(var.sqlserver_availability_message, var.message)
+  type    = "service check"
+
+  query = <<EOQ
+    "sqlserver.can_connect"${module.filter-tags.service_check}.by("port","server").last(6).count_by_status()
+EOQ
+
+  thresholds = {
+    warning  = var.sqlserver_availability_threshold_warning
+    critical = 5
+  }
+
+  no_data_timeframe   = var.sqlserver_availability_no_data_timeframe
+  new_host_delay      = var.new_host_delay
+  notify_no_data      = var.notify_no_data
+  renotify_interval   = 0
+  notify_audit        = false
+  timeout_h           = 0
+  include_tags        = true
+  locked              = false
+  require_full_window = true
+
+  tags = concat(["env:${var.environment}", "type:database", "provider:sqlserver", "resource:sqlserver", "team:claranet", "created-by:terraform"], var.sqlserver_availability_extra_tags)
+
+  lifecycle {
+    ignore_changes = [silenced]
+  }
+}

database/sqlserver/outputs.tf

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+output "sqlserver_availability_id" {
+  description = "id for monitor sqlserver_availability"
+  value       = datadog_monitor.sqlserver_availability.*.id
+}