feat: Enable high postgres high availability (#260)

Author: josielsouzanordcloud

infrastructure/modules/app-insights/alerts.tf

@@ -1,18 +1,18 @@
 resource "azurerm_monitor_metric_alert" "exceptions" {
   count = var.enable_alerting ? 1 : 0
 
-  auto_mitigate            = true
-  description              = "Triggered by any Exception"
-  enabled                  = true
-  frequency                = var.alert_frequency
-  name                     = "${var.name}-exceptions-alert"
-  resource_group_name      = var.resource_group_name
-  scopes                   = [azurerm_application_insights.appins.id]
-  severity                 = 1
-  window_size              = local.alert_window_size
+  auto_mitigate       = true
+  description         = "Triggered by any Exception"
+  enabled             = true
+  frequency           = var.alert_frequency
+  name                = "${var.name}-exceptions-alert"
+  resource_group_name = var.resource_group_name
+  scopes              = [azurerm_application_insights.appins.id]
+  severity            = 1
+  window_size         = local.alert_window_size
 
   action {
-    action_group_id    = var.action_group_id
+    action_group_id = var.action_group_id
   }
 
   criteria {

infrastructure/modules/application-gateway/tfdocs.md

@@ -143,6 +143,7 @@ map(object({
     backend_http_settings_key = string
     http_listener_key         = string
     priority                  = number
+    rewrite_rule_set_key      = optional(string)
     rule_type                 = string
   }))
 ```
@@ -199,6 +200,36 @@ Type: `number`
 
 Default: `null`
 
+### <a name="input_rewrite_rule_set"></a> [rewrite\_rule\_set](#input\_rewrite\_rule\_set)
+
+Description: A map of request rewrite rules for the Application Gateway. The key name will be used to retrieve the name from var.names.
+
+Type:
+
+```hcl
+map(object({
+    rewrite_rule = optional(map(object({
+      rule_sequence = number
+      condition = optional(map(object({
+        ignore_case = optional(bool)
+        negate      = optional(bool)
+        pattern     = string
+        variable    = string
+      })))
+      request_header_configuration  = optional(map(string))
+      response_header_configuration = optional(map(string))
+      url = optional(object({
+        components   = optional(string)
+        path         = optional(string)
+        query_string = optional(string)
+        reroute      = optional(bool)
+      }))
+    })))
+  }))
+```
+
+Default: `{}`
+
 ### <a name="input_ssl_policy_name"></a> [ssl\_policy\_name](#input\_ssl\_policy\_name)
 
 Description: n/a

infrastructure/modules/postgresql-flexible/main.tf

@@ -13,6 +13,13 @@ resource "azurerm_postgresql_flexible_server" "postgresql_flexible_server" {
   backup_retention_days        = var.backup_retention_days
   geo_redundant_backup_enabled = var.geo_redundant_backup_enabled
 
+  dynamic "high_availability" {
+    for_each = var.enable_high_availability ? [1] : []
+    content {
+      mode = "ZoneRedundant"
+    }
+  }
+
   authentication {
     active_directory_auth_enabled = true
     password_auth_enabled         = var.password_auth_enabled

infrastructure/modules/postgresql-flexible/tfdocs.md

@@ -181,6 +181,14 @@ Type: `bool`
 
 Default: `false`
 
+### <a name="input_enable_high_availability"></a> [enable\_high\_availability](#input\_enable\_high\_availability)
+
+Description: Whether to enable high availability for the PostgreSQL Flexible Server.
+
+Type: `bool`
+
+Default: `false`
+
 ### <a name="input_key_vault_admin_pwd_secret_name"></a> [key\_vault\_admin\_pwd\_secret\_name](#input\_key\_vault\_admin\_pwd\_secret\_name)
 
 Description: Key Vault secret name in which to store the Admin password, if one is created.

infrastructure/modules/postgresql-flexible/variables.tf

@@ -81,6 +81,12 @@ variable "sku_name" {
   type        = string
 }
 
+variable "enable_high_availability" {
+  description = "Whether to enable high availability for the PostgreSQL Flexible Server."
+  type        = bool
+  default     = false
+}
+
 variable "storage_mb" {
   # See: https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/postgresql_flexible_server#storage_mb-2
   description = "The storage size in MB for the PostgreSQL Flexible Server."