MON-105 add service check

database/mysql/monitors-mysql.tf

@@ -26,7 +26,7 @@ resource "datadog_monitor" "mysql_availability" {
 
   silenced = "${var.mysql_availability_silenced}"
 
-  tags = ["env:${var.environment}", "type:database", "provider:mysql", "resource:mysql", "team:claranet", "created-by:terraform", "${var.mysql_connection_extra_tags}"]
+  tags = ["env:${var.environment}", "type:database", "provider:mysql", "resource:mysql", "team:claranet", "created-by:terraform", "${var.mysql_availability_extra_tags}"]
 }
 
 resource "datadog_monitor" "mysql_connection" {

database/postgresql/README.md

@@ -17,6 +17,7 @@ module "datadog-monitors-database-postgresql" {
 Creates DataDog monitors with the following checks:
 
 - PostgreSQL Connections
+- PostgreSQL server does not respond
 - PostgreSQL too many locks
 
 ## Inputs
@@ -30,6 +31,12 @@ Creates DataDog monitors with the following checks:
 | message | Message sent when an alert is triggered | string | - | yes |
 | new_host_delay | Delay in seconds for the metric evaluation | string | `300` | no |
 | posgresql_lock_silenced | Groups to mute for PostgreSQL lock monitor | map | `<map>` | no |
+| postgresql_availability_enabled | Flag to enable PostgreSQL availability monitor | string | `true` | no |
+| postgresql_availability_extra_tags | Extra tags for PostgreSQL availability monitor | list | `<list>` | no |
+| postgresql_availability_message | Custom message for PostgreSQL availability monitor | string | `` | no |
+| postgresql_availability_no_data_timeframe | PostgreSQL availability monitor no data timeframe | string | `10` | no |
+| postgresql_availability_silenced | Groups to mute for PostgreSQL availability monitor | map | `<map>` | no |
+| postgresql_availability_threshold_warning | PostgreSQL availability monitor (warning threshold) | string | `3` | no |
 | postgresql_connection_enabled | Flag to enable PostgreSQL connection monitor | string | `true` | no |
 | postgresql_connection_extra_tags | Extra tags for PostgreSQL connection connects monitor | list | `<list>` | no |
 | postgresql_connection_message | Custom message for PostgreSQL connection monitor | string | `` | no |
@@ -50,6 +57,7 @@ Creates DataDog monitors with the following checks:
 
 | Name | Description |
 |------|-------------|
+| postgresql_availability_id | id for monitor postgresql_availability |
 | postgresql_connection_too_high_id | id for monitor postgresql_connection_too_high |
 | postgresql_too_many_locks_id | id for monitor postgresql_too_many_locks |
 

database/postgresql/inputs.tf

@@ -29,6 +29,46 @@ variable "filter_tags_custom" {
 }
 
 # PostgreSQL specific
+##################################
+###   PostgreSQL availability  ###
+##################################
+
+variable "postgresql_availability_silenced" {
+  description = "Groups to mute for PostgreSQL availability monitor"
+  type        = "map"
+  default     = {}
+}
+
+variable "postgresql_availability_enabled" {
+  description = "Flag to enable PostgreSQL availability monitor"
+  type        = "string"
+  default     = "true"
+}
+
+variable "postgresql_availability_extra_tags" {
+  description = "Extra tags for PostgreSQL availability monitor"
+  type        = "list"
+  default     = []
+}
+
+variable "postgresql_availability_message" {
+  description = "Custom message for PostgreSQL availability monitor"
+  type        = "string"
+  default     = ""
+}
+
+variable "postgresql_availability_threshold_warning" {
+  description = "PostgreSQL availability monitor (warning threshold)"
+  type        = "string"
+  default     = 3
+}
+
+variable "postgresql_availability_no_data_timeframe" {
+  description = "PostgreSQL availability monitor no data timeframe"
+  type        = "string"
+  default     = 10
+}
+
 ##################################
 ###   PostgreSQL connections   ###
 ##################################

database/postgresql/monitors-postgresql.tf

@@ -1,3 +1,34 @@
+resource "datadog_monitor" "postgresql_availability" {
+  count   = "${var.postgresql_availability_enabled ? 1 : 0}"
+  name    = "[${var.environment}] PostgreSQL server does not respond"
+  message = "${coalesce(var.postgresql_availability_message, var.message)}"
+
+  type = "service check"
+
+  query = <<EOF
+    "postgres.can_connect".over${module.filter-tags.service_check}.by("port","server").last(6).count_by_status()
+  EOF
+
+  thresholds = {
+    warning  = "${var.postgresql_availability_threshold_warning}"
+    critical = 5
+  }
+
+  notify_no_data      = true
+  no_data_timeframe   = "${var.postgresql_availability_no_data_timeframe}"
+  new_host_delay      = "${var.new_host_delay}"
+  renotify_interval   = 0
+  notify_audit        = false
+  timeout_h           = 0
+  include_tags        = true
+  locked              = false
+  require_full_window = true
+
+  silenced = "${var.postgresql_availability_silenced}"
+
+  tags = ["env:${var.environment}", "type:database", "provider:postgres", "resource:postgresql", "team:claranet", "created-by:terraform", "${var.postgresql_availability_extra_tags}"]
+}
+
 resource "datadog_monitor" "postgresql_connection_too_high" {
   count   = "${var.postgresql_connection_enabled ? 1 : 0}"
   name    = "[${var.environment}] PostgreSQL Connections {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"

database/postgresql/outputs.tf

@@ -1,3 +1,8 @@
+output "postgresql_availability_id" {
+  description = "id for monitor postgresql_availability"
+  value       = "${datadog_monitor.postgresql_availability.*.id}"
+}
+
 output "postgresql_connection_too_high_id" {
   description = "id for monitor postgresql_connection_too_high"
   value       = "${datadog_monitor.postgresql_connection_too_high.*.id}"