ruby - AWS - get autoscaling names for use with Capistrano -

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i trying setup remote deployment capistrano on amazon cloud.

the idea : ssh random machine of autoscaling group , want deploy other machines there. in order need names of other instances can define capistrano servers want deploy to

i have installed ruby sdk cannot figure out best way retrieve instances names (taking advantage on vpn).

i have 2 possibilities : either find instances tags (i have tagged them "production") or id of autoscaling group.

i don't want use other "big guns" chef, etc.

after reading documentation

two strategies : retrieve dns names autoscaling group or tags

by tags

ec2 = aws::ec2::client.new  instances_tagged = ec2.describe_instances(   dry_run: false,   filters: [     {       name: 'tag:environment',       values: ['production'],     },     {       name: 'tag:stack',       values: ['rails'],     }   ], )  dns_tagged = instances_tagged.reservations[0].instances.map(&:private_dns_name)

by autoscaling group

as = aws::autoscaling::client.new instances_of_as =  as.describe_auto_scaling_groups(   auto_scaling_group_names: ['autoscaling-group-name'],   max_records: 1, ).auto_scaling_groups[0].instances  if instances_of_as.empty?   autoscaling_dns = [] else    instances_ids = instances_of_as.map(&:instance_id)   autoscaling_dns = instance_ids.map |instance_id|     ec2.instances[instance_id].private_dns_name   end end

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