MON-390 Remove memory related monitor

cloud/azure/functions/README.md

@@ -20,7 +20,6 @@ Creates DataDog monitors with the following checks:
 
 - Function App connections count too high
 - Function App HTTP 5xx errors too high
-- Function App memory usage too high
 - Function App threads count too high
 
 ## Inputs
@@ -56,14 +55,6 @@ Creates DataDog monitors with the following checks:
 | http\_5xx\_errors\_rate\_threshold\_warning | Warning threshold for Functions Http 5xx errors rate | string | `"10"` | no |
 | http\_5xx\_errors\_rate\_time\_aggregator | Monitor aggregator for Functions Http 5xx errors rate [available values: min, max or avg] | string | `"min"` | no |
 | http\_5xx\_errors\_rate\_timeframe | Monitor timeframe for Functions Http 5xx errors rate [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `"last_5m"` | no |
-| memory\_usage\_enabled | Flag to enable Functions memory usage monitor | string | `"true"` | no |
-| memory\_usage\_extra\_tags | Extra tags for Functions memory usage monitor | list | `[]` | no |
-| memory\_usage\_message | Custom message for Functions memory usage monitor | string | `""` | no |
-| memory\_usage\_silenced | Groups to mute for Functions memory usage monitor | map | `{}` | no |
-| memory\_usage\_threshold\_critical | Alerting threshold for Functions memory usage in bytes | string | `"125829120"` | no |
-| memory\_usage\_threshold\_warning | Warning threshold for Functions memory usage in bytes | string | `"104857600"` | no |
-| memory\_usage\_time\_aggregator | Monitor aggregator for Functions memory usage [available values: min, max or avg] | string | `"min"` | no |
-| memory\_usage\_timeframe | Monitor timeframe for Functions memory usage [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `"last_5m"` | 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 |
 
@@ -74,7 +65,6 @@ Creates DataDog monitors with the following checks:
 | function\_high\_connections\_count\_id | id for monitor function_high_connections_count |
 | function\_high\_threads\_count\_id | id for monitor function_high_threads_count |
 | function\_http\_5xx\_errors\_rate\_id | id for monitor function_http_5xx_errors_rate |
-| function\_memory\_usage\_id | id for monitor function_memory_usage |
 
 ## Related documentation
 

cloud/azure/functions/inputs.tf

@@ -170,49 +170,3 @@ variable "high_threads_count_threshold_warning" {
   default     = 490
   description = "Warning threshold for Functions high threads count"
 }
-
-variable "memory_usage_silenced" {
-  description = "Groups to mute for Functions memory usage monitor"
-  type        = "map"
-  default     = {}
-}
-
-variable "memory_usage_enabled" {
-  description = "Flag to enable Functions memory usage monitor"
-  type        = "string"
-  default     = "true"
-}
-
-variable "memory_usage_extra_tags" {
-  description = "Extra tags for Functions memory usage monitor"
-  type        = "list"
-  default     = []
-}
-
-variable "memory_usage_message" {
-  description = "Custom message for Functions memory usage monitor"
-  type        = "string"
-  default     = ""
-}
-
-variable "memory_usage_time_aggregator" {
-  description = "Monitor aggregator for Functions memory usage [available values: min, max or avg]"
-  type        = "string"
-  default     = "min"
-}
-
-variable "memory_usage_timeframe" {
-  description = "Monitor timeframe for Functions memory usage [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`]"
-  type        = "string"
-  default     = "last_5m"
-}
-
-variable "memory_usage_threshold_critical" {
-  default     = 125829120                                                # 120Mb
-  description = "Alerting threshold for Functions memory usage in bytes"
-}
-
-variable "memory_usage_threshold_warning" {
-  default     = 104857600                                               # 100Mb 
-  description = "Warning threshold for Functions memory usage in bytes"
-}

cloud/azure/functions/monitors-functions.tf

@@ -91,34 +91,3 @@ resource "datadog_monitor" "function_high_threads_count" {
 
   tags = ["env:${var.environment}", "type:cloud", "provider:azure", "resource:azure_functions", "team:claranet", "created-by:terraform", "${var.high_threads_count_extra_tags}"]
 }
-
-resource "datadog_monitor" "function_memory_usage" {
-  count   = "${var.memory_usage_enabled ? 1 : 0}"
-  name    = "[${var.environment}] Function App memory usage too high {{#is_alert}}{{{comparator}}} {{threshold}} ({{value}}){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}} ({{value}}){{/is_warning}}"
-  type    = "metric alert"
-  message = "${coalesce(var.memory_usage_message, var.message)}"
-
-  query = <<EOF
-    ${var.memory_usage_time_aggregator}(${var.memory_usage_timeframe}): (
-      avg:azure.functions.average_memory_working_set${module.filter-tags.query_alert} by {resource_group,region,name,instance}
-    ) > ${var.memory_usage_threshold_critical}
-  EOF
-
-  evaluation_delay = "${var.evaluation_delay}"
-  new_host_delay   = "${var.new_host_delay}"
-
-  thresholds {
-    warning  = "${var.memory_usage_threshold_warning}"
-    critical = "${var.memory_usage_threshold_critical}"
-  }
-
-  silenced = "${var.memory_usage_silenced}"
-
-  notify_no_data      = false
-  renotify_interval   = 0
-  require_full_window = false
-  timeout_h           = 0
-  include_tags        = true
-
-  tags = ["env:${var.environment}", "type:cloud", "provider:azure", "resource:azure_functions", "team:claranet", "created-by:terraform", "${var.memory_usage_extra_tags}"]
-}

cloud/azure/functions/outputs.tf

@@ -12,8 +12,3 @@ output "function_high_threads_count_id" {
   description = "id for monitor function_high_threads_count"
   value       = "${datadog_monitor.function_high_threads_count.*.id}"
 }
-
-output "function_memory_usage_id" {
-  description = "id for monitor function_memory_usage"
-  value       = "${datadog_monitor.function_memory_usage.*.id}"
-}