adding connections monitoring

Author: obeleh

connections-variables.tf

@@ -0,0 +1,46 @@
+variable "connections_enabled" {
+  type    = bool
+  default = true
+}
+
+variable "connections_warning" {
+  type    = number
+  default = 400
+}
+
+variable "connections_critical" {
+  type    = number
+  default = 500
+}
+
+variable "connections_evaluation_period" {
+  type    = string
+  default = "last_30m"
+}
+
+variable "connections_note" {
+  type    = string
+  default = ""
+}
+
+variable "connections_docs" {
+  type    = string
+  default = ""
+}
+
+variable "connections_filter_override" {
+  type    = string
+  default = ""
+}
+
+variable "connections_alerting_enabled" {
+  type    = bool
+  default = true
+}
+
+variable "connections_priority" {
+  description = "Number from 1 (high) to 5 (low)."
+
+  type    = number
+  default = 3
+}

connections.tf

@@ -0,0 +1,34 @@
+locals {
+  connections_filter = coalesce(
+    var.connections_filter_override,
+    var.filter_str
+  )
+}
+
+module "connections" {
+  source = "[email protected]:kabisa/terraform-datadog-generic-monitor.git?ref=0.6.2"
+
+  name  = "SQL Server - Blocked processes"
+  query = "avg(${var.connections_evaluation_period}):max:sqlserver.stats.connections{${local.connections_filter}} by {host} >= ${var.connections_critical}"
+
+  alert_message    = "Unusual high number of SQL Server connections on {{host.name}} has increased above {{threshold}} current connection count: ({{value}}"
+  recovery_message = "Number of SQL Server connections of {{host.name}} has recovered ({{value}}"
+
+  # monitor level vars
+  enabled            = var.connections_enabled
+  alerting_enabled   = var.connections_alerting_enabled
+  warning_threshold  = var.connections_warning
+  critical_threshold = var.connections_critical
+  priority           = var.connections_priority
+  docs               = var.connections_docs
+  note               = var.connections_note
+
+  # module level vars
+  env                  = var.alert_env
+  service              = var.service
+  notification_channel = var.notification_channel
+  additional_tags      = var.additional_tags
+  locked               = var.locked
+  name_prefix          = var.name_prefix
+  name_suffix          = var.name_suffix
+}

procs-blocked.tf

@@ -8,7 +8,7 @@ locals {
 module "procs_blocked" {
   source = "[email protected]:kabisa/terraform-datadog-generic-monitor.git?ref=0.6.2"
 
-  name  = "SQL Server - Lock waits"
+  name  = "SQL Server - Blocked processes"
   query = "avg(${var.procs_blocked_evaluation_period}):max:sqlserver.stats.procs_blocked{${local.procs_blocked_filter}} by {host} >= ${var.procs_blocked_critical}"
 
   alert_message    = "Procs blocked on {{host.name}} has increased above {{threshold}} per second ({{value}} per second)"