rds_cluster: add support for I/O-Optimized storage configuration for aurora clusters

changelogs/fragments/2063-rds_cluster-add-support-io-optimized-storage-config.yml

@@ -0,0 +1,3 @@
+---
+minor_changes:
+  - rds_cluster - Add support for I/O-Optimized storage configuration for aurora clusters (https://github.com/ansible-collections/amazon.aws/pull/2063).

plugins/modules/rds_cluster.py

@@ -187,11 +187,15 @@
         description:
           - Specifies the storage type to be associated with the DB cluster.
           - This setting is required to create a Multi-AZ DB cluster.
-          - When specified, a value for the I(iops) parameter is required.
-          - Defaults to C(io1).
+          - For multi-AZ DB clusters, O(storage_type) defaults to V(io1) and a value for the O(iops) parameter is required.
+          - For Aurora DB clusters, O(storage_type) defaults to V(aurora) standard.
+          - For mysql and postgres DB clusters, O(storage_type) defaults to V(io1).
+          - Support for V(aurora) and V(aurora-iopt1) was added in release 8.1.0.
         type: str
         choices:
           - io1
+          - aurora
+          - aurora-iopt1
         version_added: 5.5.0
     iops:
         description:
@@ -1100,6 +1104,10 @@ def changing_cluster_options(modify_params, current_cluster):
             changing_params["DBClusterParameterGroupName"] = desired_db_cluster_parameter_group
 
     for param in modify_params:
+        # describe_db_clusters does not return StorageType for clusters with storage config as "aurora standard"
+        if param == "StorageType":
+            changing_params[param] = modify_params[param]
+            continue
         if modify_params[param] != current_cluster[param]:
             changing_params[param] = modify_params[param]
 
@@ -1237,7 +1245,7 @@ def main():
         engine_mode=dict(choices=["provisioned", "serverless", "parallelquery", "global", "multimaster"]),
         engine_version=dict(),
         allocated_storage=dict(type="int"),
-        storage_type=dict(type="str", choices=["io1"]),
+        storage_type=dict(type="str", choices=["io1", "aurora", "aurora-iopt1"]),
         iops=dict(type="int"),
         final_snapshot_identifier=dict(),
         force_backtrack=dict(type="bool"),
@@ -1324,6 +1332,16 @@ def main():
                 if not module.params.get("storage_type"):
                     module.params["storage_type"] = "io1"
 
+    if module.params.get("engine") and module.params["engine"] in ("aurora", "aurora-mysql", "aurora-postgresql"):
+        if not module.check_mode and module.params.get("storage_type"):
+            module.params["storage_type"] = "aurora"
+
+    if module.params.get("storage_type") and module.params["storage_type"] in ("aurora", "aurora-iopt1"):
+        if module.params.get("engine") not in ("aurora", "aurora-mysql", "aurora-postgresql"):
+            module.fail_json(
+                f"storage_type={module.params['storage_type']} is only supported for aurora engines 'aurora', 'aurora-mysql', 'aurora-postgresql'"
+            )
+
     module.params["db_cluster_identifier"] = module.params["db_cluster_identifier"].lower()
     cluster = get_cluster(module.params["db_cluster_identifier"])
 

tests/integration/targets/rds_cluster_create/tasks/main.yaml

@@ -118,10 +118,50 @@
         that:
           - not _result_create_db_cluster.changed
 
+    # aurora-iopt1 test
+    - name: Create aurora cluster with IO optimized storage
+      amazon.aws.rds_cluster:
+        engine: "{{ engine }}"
+        username: "{{ username }}"
+        password: "{{ password }}"
+        cluster_id: "{{ cluster_id }}-io-optimized"
+        tags: "{{ tags_create }}"
+        storage_type: aurora-iopt1
+      register: _result_create_db_cluster_io_optimized
+
+    - assert:
+        that:
+          - _result_create_db_cluster_io_optimized.changed
+          # as of 5/2024, API does not return the value of storage_type when storage_type not set or set to "aurora"
+          # - _result_create_db_cluster_io_optimized.storage_type == 'aurora-iopt1'
+          - _result_create_db_cluster_io_optimized.storage_encrypted == false
+          - _result_create_db_cluster_io_optimized.engine_mode == "provisioned"
+          - _result_create_db_cluster_io_optimized.status == 'available'
+
+    # aurora-iopt1 test failure
+    - name: Create mysql cluster with IO optimized storage - test failure with wrong engine + storage combination
+      amazon.aws.rds_cluster:
+        engine: mysql
+        username: "{{ username }}"
+        password: "{{ password }}"
+        cluster_id: "{{ cluster_id }}-io-optimized-failure"
+        tags: "{{ tags_create }}"
+        storage_type: aurora-iopt1
+      register: _result_create_db_cluster_io_optimized
+      ignore_errors: true
+
+    - assert:
+        that:
+          - not _result_create_db_cluster_io_optimized.changed
+          - _result_create_db_cluster_io_optimized.failed
+
   always:
-    - name: Delete DB cluster without creating a final snapshot
+    - name: Delete test DB clusters without creating a final snapshot
       amazon.aws.rds_cluster:
         state: absent
-        cluster_id: "{{ cluster_id }}"
+        cluster_id: "{{ item }}"
         skip_final_snapshot: true
       ignore_errors: true
+      with_items:
+        - "{{ cluster_id }}"
+        - "{{ cluster_id }}-io-optimized"