When working with EC2 instances across multiple regions I’ve found it’s near impossible to get a good overview of what is running where. This can be especially annoying when you are automatically launching a number of short lived instances.
To prevent me having to go through 9 different web pages to see what I currently have running I found it easier to just use the API and list active instances from the CLI.
Install dependencies:
$ gem install aws-sdk pmap
/usr/local/bin/aws-list:
#!/usr/bin/ruby
require 'aws-sdk'
require 'pmap'
def ec2(region = 'us-east-1')
ec2 = AWS::EC2.new(
access_key_id: ENV['AWS_ACCESS_KEY'],
secret_access_key: ENV['AWS_SECRET_KEY'],
region: region
)
ec2
end
def list_instances
instances = []
ec2.regions.peach do |region|
ec2.regions[region.name].instances.peach do |instance|
next if instance.status == :terminated
instances << instance
end
end
instances
end
list_instances.peach do |instance|
puts "#{instance.id}\t\t#{instance.availability_zone}\t\t#{instance.status}\t\t#{instance.ip_address}\n"
end
Listing instances:
$ export AWS_ACCESS_KEY="ABCDEFGHIJKLMNOPQRSTUVWXYZ" $ export AWS_SECRET_KEY="ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890" $ aws-list i-16b78754 eu-west-1a running 54.77.218.113 i-0025e1e6 eu-west-1a running 54.76.129.127 i-3926e2df eu-west-1a running 54.154.52.146 i-4924e0af eu-west-1a running 54.154.52.77 i-c424e022 eu-west-1a running 54.72.131.127 i-0c25e1ea eu-west-1a running 54.154.51.140 i-9c25e17a eu-west-1a running 54.154.49.204 i-4b24e0ad eu-west-1a running 54.77.225.135 i-33e929f2 eu-central-1b running 54.93.164.233 i-c324e025 eu-west-1a running 54.76.98.165 i-3f26e2d9 eu-west-1a running 54.154.47.126 i-8027e366 eu-west-1a running 54.154.20.140 i-0d25e1eb eu-west-1a running 54.77.100.132 i-d718edd9 us-west-2c running 54.149.35.63 i-0c2028e6 us-east-1a running 54.164.193.104 i-5b95e54e sa-east-1a running 54.94.165.7 i-2dad38de ap-northeast-1a running 54.65.157.129 i-625a80af ap-southeast-1a running 54.169.195.201 i-a06e006f ap-southeast-2a running 54.66.184.34 i-2dbce5e5 us-west-1a running 54.67.67.18
