AWS: Brief Listing of EC2 Instances

AWS: EC2 インスタンスの簡易一覧表示

 

AWS CLI の出力結果(json)を表形式にフォーマットして見やすくしたい。

 

EC2 インスタンス一覧の表示

jq でやろうと思ったが断念。Python のスクリプトを書いた。 

aws_list.py

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#!/usr/bin/env python # -*- coding: utf-8 -*-   import sys import subprocess try:     import json except ImportError:     print('You need python 2.6 or later to run this script.')     sys.exit(1)     def print_instances():     headers = [         ('Name', 24),         ('Instance', 12),         ('Type', 12),         ('State', 12),         ('LaunchTime', 24),     ]     print(''.join([x[0].ljust(x[1]) for x in headers]))     print('-' * sum([x[1] for x in headers]))       stdout = subprocess.check_output(['aws', 'ec2', 'describe-instances'])     output = json.loads(stdout)       for ins in output['Reservations'][0]['Instances']:         result = [             ''.join([x['Value'] for x in ins['Tags'] if x['Key'] == 'Name']),             ins['InstanceId'],             ins['InstanceType'],             ins['State']['Name'],             ins['LaunchTime'],         ]         print(''.join([result[i].ljust(x[1]) for i, x in enumerate(headers)]))   if __name__ == '__main__':     print_instances()

• 出力例

Name                    Instance    Type        State       LaunchTime ------------------------------------------------------------------------------------ server1                 i-00000000  t1.micro    running     2013-07-01T10:58:49.000Z server2                 i-11111111  m1.small    stopped     2013-07-01T11:58:49.000Z server3                 i-22222222  m1.small    stopping    2013-07-01T12:58:49.000Z                         i-33333333  t1.micro    pending     2013-07-01T13:58:49.000Z

最終行は名前未設定のインスタンス。