Launch a cluster - Steps 3&4

Under “Tags”, tag your instance with a recognizable Name tag so that you’ll be able to see it later in the cost reports. For example:
Key=Name
Value (Optional)=EMRTransientCluster1
tags

Click Next to go to Step 4: Security. On the EC2 key pair drop-down, select emr-workshop-key-pair. key_pair

Leave all the other settings as-is and click “Create cluster