Expose ec2 role (#27)

Author: dusty73

README.md

@@ -257,6 +257,7 @@ Available targets:
 |------|-------------|
 | cluster\_id | EMR cluster ID |
 | cluster\_name | EMR cluster name |
+| ec2\_role | Role name of EMR EC2 instances so users can attach more policies |
 | master\_host | Name of the cluster CNAME record for the master nodes in the parent DNS zone |
 | master\_public\_dns | Master public DNS |
 | master\_security\_group\_id | Master security group ID |

docs/terraform.md

@@ -90,6 +90,7 @@
 |------|-------------|
 | cluster\_id | EMR cluster ID |
 | cluster\_name | EMR cluster name |
+| ec2\_role | Role name of EMR EC2 instances so users can attach more policies |
 | master\_host | Name of the cluster CNAME record for the master nodes in the parent DNS zone |
 | master\_public\_dns | Master public DNS |
 | master\_security\_group\_id | Master security group ID |

outputs.tf

@@ -27,3 +27,8 @@ output "master_host" {
   value       = module.dns_master.hostname
   description = "Name of the cluster CNAME record for the master nodes in the parent DNS zone"
 }
+
+output "ec2_role" {
+  value       = join("", aws_iam_role.ec2.*.name)
+  description = "Role name of EMR EC2 instances so users can attach more policies"
+}