feat: added new input variable member_host_flavor and updated default value of memory_mb to 4096.<br><br>Reference: [Cloud Database Hosting Models](https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-hosting-models)<br><br>The [host model switching](https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-hosting-models&interface=api#hosting-models-switching) section has details of the migrations that the service is rolling out. All instances will have to be switched and the [time line](https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-hosting-models&interface=api#hosting-model-transition-timeline) for the migrations is outlined.<br><br>During the transition both existing and new models are supported.<br><br>Users of this module should consider the changes being implemented by the service. It is recommended that new deployments use the shared or isolated compute models to start, by specifying the member_host_flavor. It is recommended that existing deployments make updates to control the upgrade process by specifying shared or isolate compute configurations and the resource required to run the service, by adding the member_host_flavor. (#366)

Author: shemau

README.md

@@ -93,8 +93,9 @@ You need the following permissions to run this module.
 | <a name="input_instance_name"></a> [instance\_name](#input\_instance\_name) | The name to give the MongoDB instance. | `string` | n/a | yes |
 | <a name="input_kms_encryption_enabled"></a> [kms\_encryption\_enabled](#input\_kms\_encryption\_enabled) | Set this to true to control the encryption keys used to encrypt the data that you store in IBM Cloud® Databases. If set to false, the data is encrypted by using randomly generated keys. For more info on Key Protect integration, see https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-key-protect. For more info on HPCS integration, see https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-hpcs | `bool` | `false` | no |
 | <a name="input_kms_key_crn"></a> [kms\_key\_crn](#input\_kms\_key\_crn) | The root key CRN of a Key Management Services like Key Protect or Hyper Protect Crypto Services (HPCS) that you want to use for disk encryption. Only used if var.kms\_encryption\_enabled is set to true. | `string` | `null` | no |
+| <a name="input_member_host_flavor"></a> [member\_host\_flavor](#input\_member\_host\_flavor) | Allocated host flavor per member. [Learn more](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/database#host_flavor). | `string` | `null` | no |
 | <a name="input_members"></a> [members](#input\_members) | Allocated number of members | `number` | `3` | no |
-| <a name="input_memory_mb"></a> [memory\_mb](#input\_memory\_mb) | Allocated memory per member. For more information, see https://cloud.ibm.com/docs/databases-for-mongodb?topic=databases-for-mongodb-pricing#mongodb-scale-member | `number` | `1024` | no |
+| <a name="input_memory_mb"></a> [memory\_mb](#input\_memory\_mb) | Allocated memory per member. For more information, see https://cloud.ibm.com/docs/databases-for-mongodb?topic=databases-for-mongodb-pricing#mongodb-scale-member | `number` | `4096` | no |
 | <a name="input_mongodb_version"></a> [mongodb\_version](#input\_mongodb\_version) | The version of the MongoDB to provision. If no value passed, the current ICD preferred version is used. For our version policy, see https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-versioning-policy for more details | `string` | `null` | no |
 | <a name="input_plan"></a> [plan](#input\_plan) | The name of the service plan that you choose for your MongoDB instance | `string` | `"standard"` | no |
 | <a name="input_region"></a> [region](#input\_region) | The region where you want to deploy your instance. | `string` | `"us-south"` | no |

examples/backup-restore/main.tf

@@ -16,12 +16,13 @@ data "ibm_database_backups" "backup_database" {
 
 # New mongo db instance pointing to the backup instance
 module "restored_mongo_db" {
-  source            = "../.."
-  resource_group_id = module.resource_group.resource_group_id
-  instance_name     = "${var.prefix}-mongodb-restored"
-  region            = var.region
-  mongodb_version   = var.mongodb_version
-  access_tags       = var.access_tags
-  tags              = var.resource_tags
-  backup_crn        = data.ibm_database_backups.backup_database.backups[0].backup_id
+  source             = "../.."
+  resource_group_id  = module.resource_group.resource_group_id
+  instance_name      = "${var.prefix}-mongodb-restored"
+  region             = var.region
+  mongodb_version    = var.mongodb_version
+  access_tags        = var.access_tags
+  tags               = var.resource_tags
+  member_host_flavor = "multitenant"
+  backup_crn         = data.ibm_database_backups.backup_database.backups[0].backup_id
 }

examples/complete/main.tf

@@ -94,6 +94,7 @@ module "mongodb" {
   access_tags                = var.access_tags
   tags                       = var.resource_tags
   service_credential_names   = var.service_credential_names
+  member_host_flavor         = "multitenant"
   cbr_rules = [
     {
       description      = "${var.prefix}-mongodb access only from vpc"

examples/fscloud/main.tf

@@ -65,6 +65,7 @@ module "mongodb" {
   mongodb_version            = var.mongodb_version
   service_credential_names   = var.service_credential_names
   auto_scaling               = var.auto_scaling
+  member_host_flavor         = "b3c.4x16.encrypted"
   backup_encryption_key_crn  = var.backup_encryption_key_crn
   backup_crn                 = var.backup_crn
   cbr_rules = [

main.tf

@@ -22,6 +22,9 @@ locals {
   # Determine if auto scaling is enabled
   auto_scaling_enabled = var.auto_scaling == null ? [] : [1]
 
+  # Determine if host_flavor is used
+  host_flavor_set = var.member_host_flavor != null ? true : false
+
   # Determine what KMS service is being used for database encryption
   kms_service = var.kms_key_crn != null ? (
     can(regex(".*kms.*", var.kms_key_crn)) ? "kms" : (
@@ -73,22 +76,69 @@ resource "ibm_database" "mongodb" {
     }
   }
 
-  group {
-    group_id = "member"
-    memory {
-      allocation_mb = var.memory_mb
-    }
-    disk {
-      allocation_mb = var.disk_mb
+  ## This for_each block is NOT a loop to attach to multiple group blocks.
+  ## This is used to conditionally add one, OR, the other group block depending on var.local.host_flavor_set
+  ## This block is for if host_flavor IS set to specific pre-defined host sizes and not set to "multitenant"
+  dynamic "group" {
+    for_each = local.host_flavor_set && var.member_host_flavor != "multitenant" ? [1] : []
+    content {
+      group_id = "member" # Only member type is allowed for IBM Cloud Databases
+      host_flavor {
+        id = var.member_host_flavor
+      }
+      disk {
+        allocation_mb = var.disk_mb
+      }
+      members {
+        allocation_count = var.members
+      }
     }
-    cpu {
-      allocation_count = var.cpu_count
+  }
+
+  ## This block is for if host_flavor IS set to "multitenant"
+  dynamic "group" {
+    for_each = local.host_flavor_set && var.member_host_flavor == "multitenant" ? [1] : []
+    content {
+      group_id = "member" # Only member type is allowed for IBM Cloud Databases
+      host_flavor {
+        id = var.member_host_flavor
+      }
+      disk {
+        allocation_mb = var.disk_mb
+      }
+      memory {
+        allocation_mb = var.memory_mb
+      }
+      cpu {
+        allocation_count = var.cpu_count
+      }
+      members {
+        allocation_count = var.members
+      }
     }
-    members {
-      allocation_count = var.members
+  }
+
+  ## This block is for if host_flavor IS NOT set
+  dynamic "group" {
+    for_each = local.host_flavor_set ? [] : [1]
+    content {
+      group_id = "member" # Only member type is allowed for IBM Cloud Databases
+      memory {
+        allocation_mb = var.memory_mb
+      }
+      disk {
+        allocation_mb = var.disk_mb
+      }
+      cpu {
+        allocation_count = var.cpu_count
+      }
+      members {
+        allocation_count = var.members
+      }
     }
   }
 
+
   ## This for_each block is NOT a loop to attach to multiple auto_scaling blocks.
   ## This block is only used to conditionally add auto_scaling block depending on var.auto_scaling
   dynamic "auto_scaling" {
@@ -168,7 +218,7 @@ module "cbr_rule" {
       }
     ]
   }]
-  #  There is only 1 operation type for Redis so it is not exposed as a configuration
+  #  There is only 1 operation type for MongoDB so it is not exposed as a configuration
   operations = [{
     api_types = [
       {

modules/fscloud/README.md

@@ -41,6 +41,7 @@ No resources.
 | <a name="input_existing_kms_instance_guid"></a> [existing\_kms\_instance\_guid](#input\_existing\_kms\_instance\_guid) | The GUID of the Hyper Protect Crypto Services instance. | `string` | n/a | yes |
 | <a name="input_instance_name"></a> [instance\_name](#input\_instance\_name) | Name of the mongodb instance | `string` | n/a | yes |
 | <a name="input_kms_key_crn"></a> [kms\_key\_crn](#input\_kms\_key\_crn) | The root key CRN of the Hyper Protect Crypto Service (HPCS) to use for disk encryption. | `string` | n/a | yes |
+| <a name="input_member_host_flavor"></a> [member\_host\_flavor](#input\_member\_host\_flavor) | Allocated host flavor per member. [Learn more](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/database#host_flavor). | `string` | `null` | no |
 | <a name="input_members"></a> [members](#input\_members) | Allocated number of members | `number` | `3` | no |
 | <a name="input_memory_mb"></a> [memory\_mb](#input\_memory\_mb) | Allocated memory per member. For more information, see https://cloud.ibm.com/docs/databases-for-mongodb?topic=databases-for-mongodb-pricing#mongodb-scale-member | `number` | `14336` | no |
 | <a name="input_mongodb_version"></a> [mongodb\_version](#input\_mongodb\_version) | Version of the MongoDB instance. If no value is passed, the current preferred version of IBM Cloud Databases is used. | `string` | `null` | no |

modules/fscloud/main.tf

@@ -20,6 +20,7 @@ module "mongodb" {
   users                         = var.users
   disk_mb                       = var.disk_mb
   cpu_count                     = var.cpu_count
+  member_host_flavor            = var.member_host_flavor
   auto_scaling                  = var.auto_scaling
   service_credential_names      = var.service_credential_names
   backup_crn                    = var.backup_crn

modules/fscloud/variables.tf

@@ -59,6 +59,12 @@ variable "cpu_count" {
   # Validation is done in terraform plan phase by IBM provider, so no need to add any extra validation here
 }
 
+variable "member_host_flavor" {
+  type        = string
+  description = "Allocated host flavor per member. [Learn more](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/database#host_flavor)."
+  default     = null
+}
+
 variable "members" {
   type        = number
   description = "Allocated number of members"

variables.tf

@@ -78,7 +78,7 @@ variable "endpoints" {
 variable "memory_mb" {
   type        = number
   description = "Allocated memory per member. For more information, see https://cloud.ibm.com/docs/databases-for-mongodb?topic=databases-for-mongodb-pricing#mongodb-scale-member"
-  default     = 1024
+  default     = 4096
   # Validation is done in the Terraform plan phase by the IBM provider, so no need to add extra validation here.
 }
 
@@ -96,6 +96,13 @@ variable "cpu_count" {
   # Validation is done in the Terraform plan phase by the IBM provider, so no need to add extra validation here.
 }
 
+variable "member_host_flavor" {
+  type        = string
+  description = "Allocated host flavor per member. [Learn more](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/database#host_flavor)."
+  default     = null
+  # Validation is done in the Terraform plan phase by the IBM provider, so no need to add extra validation here.
+}
+
 variable "members" {
   type        = number
   description = "Allocated number of members"