Feature/ssh using ec2 tag

[johnclaus]

Added the ability to allow assh to connect to an EC2 node using a tag name.

[mheffner]

Cool, I'll give this a shot. Thanks for putting this together.

[johnclaus]

:thumbsup: Sure thing.

[mheffner]

Hrm, I think this needs to de-dup the returned instances:

$ assh kafka
Please select which node you wish to use:
0) kafkanode-1
1) kafkanode-1

Probably because we have a bunch of similar tags set:

$ ec2dtag | grep kafka
TAG instance    i-1234  Name    kafkanode-1
TAG instance    i-1234  LIBRATO_SOURCE  kafkanode-1
TAG instance    i-1234  kafkanode-1 

[johnclaus]

I just pushed a commit which only lists nodes with a resource_type of "instance". This should solve your original problem with duplicate tags.

[mheffner]

@johnclaus The tags above are all instance tags though, so this doesn't reduce the dups. I think the code actually has to uniq the returned set of instances based on their instance ids. Give this a try on our dev account with assh kafka, I would expect only one entry.

[johnclaus]

:thumbsup:

[mheffner]

Looks good!