VPC/Subnet requirements not documented

[matthewadams]

I don't believe that all of the requirements to use spark-ec2 with an existing VPC & subnet are documented. If I create a VPC & subnet, then use those to run spark-ec2 as documented here, I get an error ending with

Waiting for cluster to enter 'ssh-ready' state...........
Error:
 Failed to determine hostname of Instance:i-0909d1ed1af09cd09.
Please check that you provided --private-ips if necessary

More info on SO at http://stackoverflow.com/questions/42654336/how-do-i-resolve-failed-to-determine-hostname-of-instance-error-using-spark-ec

[yuj]

I am running into the same issue. Have you got any update?

[matthewadams]

@yuj nope...it's been so long I can't remember what the solution or workaround was...sorry.