Add more cluster instance outputs (#15)

* Add more cluster instance outputs
* add arn output

Author: marcincuber

README.md

@@ -209,7 +209,10 @@ No modules.
 | <a name="output_rds_cluster_arn"></a> [rds\_cluster\_arn](#output\_rds\_cluster\_arn) | The ID of the aurora cluster |
 | <a name="output_rds_cluster_endpoint"></a> [rds\_cluster\_endpoint](#output\_rds\_cluster\_endpoint) | The cluster endpoint |
 | <a name="output_rds_cluster_id"></a> [rds\_cluster\_id](#output\_rds\_cluster\_id) | The ID of the cluster |
+| <a name="output_rds_cluster_instance_arns"></a> [rds\_cluster\_instance\_arns](#output\_rds\_cluster\_instance\_arns) | A list of all cluster instance ARNs |
+| <a name="output_rds_cluster_instance_dbi_resource_ids"></a> [rds\_cluster\_instance\_dbi\_resource\_ids](#output\_rds\_cluster\_instance\_dbi\_resource\_ids) | A list of all the region-unique, immutable identifiers for the DB instances |
 | <a name="output_rds_cluster_instance_endpoints"></a> [rds\_cluster\_instance\_endpoints](#output\_rds\_cluster\_instance\_endpoints) | A list of all cluster instance endpoints |
+| <a name="output_rds_cluster_instance_ids"></a> [rds\_cluster\_instance\_ids](#output\_rds\_cluster\_instance\_ids) | A list of all cluster instance ids |
 | <a name="output_rds_cluster_master_password"></a> [rds\_cluster\_master\_password](#output\_rds\_cluster\_master\_password) | The master password |
 | <a name="output_rds_cluster_master_username"></a> [rds\_cluster\_master\_username](#output\_rds\_cluster\_master\_username) | The master username |
 | <a name="output_rds_cluster_port"></a> [rds\_cluster\_port](#output\_rds\_cluster\_port) | The port |

outputs.tf

@@ -1,4 +1,6 @@
-// aws_rds_cluster
+#####
+# aws_rds_cluster
+#####
 output "rds_cluster_arn" {
   description = "The ID of the aurora cluster"
   value       = var.enable_global_cluster ? join("", aws_rds_cluster.global.*.arn) : join("", aws_rds_cluster.main.*.arn)
@@ -40,11 +42,29 @@ output "rds_cluster_master_username" {
   value       = var.enable_global_cluster ? join("", aws_rds_cluster.global.*.master_username) : join("", aws_rds_cluster.main.*.master_username)
 }
 
+#####
+# aws_rds_cluster_instance
+#####
 output "rds_cluster_instance_endpoints" {
   description = "A list of all cluster instance endpoints"
   value       = aws_rds_cluster_instance.main.*.endpoint
 }
 
+output "rds_cluster_instance_arns" {
+  description = "A list of all cluster instance ARNs"
+  value       = aws_rds_cluster_instance.main.*.arn
+}
+
+output "rds_cluster_instance_ids" {
+  description = "A list of all cluster instance ids"
+  value       = aws_rds_cluster_instance.main.*.id
+}
+
+output "rds_cluster_instance_dbi_resource_ids" {
+  description = "A list of all the region-unique, immutable identifiers for the DB instances"
+  value       = aws_rds_cluster_instance.main.*.dbi_resource_id
+}
+
 output "security_group_id" {
   description = "The security group ID of the cluster"
   value       = join("", aws_security_group.main.*.id)