背景介绍：
目前项目中使用了大量的AWS EC2 Instances作为服务器，在自动化运维方面，我们之前一直使用的是AWS CLI命令行工具，然后在Shell脚本中调用。
最近我想通过脚本实现一个“Clone”的功能，模拟Web Console上的“Launch More Like This”来创建Instance。但在Shell脚本中实现起来感觉不太舒服，于是就直接利用Python的boto库写了一个，在此分享给大家。
具体内容：
脚本地址：https://github.com/mcsrainbow/python-demos/blob/master/demos/awscli.py
相关示例：
$ ./awscli.py -h
usage: awscli.py [-h] (--create | --clone | --terminate) --region REGION
[--instance_name INSTANCE_NAME] [--image_id IMAGE_ID]
[--instance_type INSTANCE_TYPE] [--key_name KEY_NAME]
[--security_group_ids SECURITY_GROUP_IDS]
[--subnet_id SUBNET_ID]
[--src_instance_name SRC_INSTANCE_NAME]
[--dest_instance_name DEST_INSTANCE_NAME]
[--private_ip_address PRIVATE_IP_ADDRESS]
[--instance_id INSTANCE_ID] [--volume_size VOLUME_SIZE]
[--volume_type {standard,io1,gp2}]
[--volume_zone VOLUME_ZONE] [--volume_iops VOLUME_IOPS]
[--volume_delete_on_termination]
[--load_balancer_name LOAD_BALANCER_NAME]
[--quick]
examples:
./awscli.py --create --region us-west-1 --instance_name idc1-server2
--image_id ami-30f01234 --instance_type t1.micro
--key_name idc1-keypair1 --security_group_ids sg-eaf01234f
--subnet_id subnet-6d901234
./awscli.py --create --region us-west-1 --instance_name idc1-server3
--image_id ami-30f01234 --instance_type t1.micro
--key_name idc1-keypair1 --security_group_ids sg-eaf01234f
--subnet_id subnet-6d901234 --volume_size 10 --volume_type gp2
--volume_zone us-west-1a --volume_delete_on_termination
--load_balancer_name idc1-elb1 --private_ip_address 172.16.2.23
./awscli.py --clone --region us-west-1 --src_instance_name idc1-server1
--dest_instance_name idc1-server2
./awscli.py --clone --region us-west-1 --src_instance_name idc1-server1
--dest_instance_name idc1-server3 --private_ip_address 172.16.2.23
./awscli.py --terminate --region us-west-1 --instance_name idc1-server3
./awscli.py --terminate --region us-west-1 --instance_id i-01234abc
./awscli.py --terminate --region us-west-1 --instance_id i-01234abc --quick
...
optional arguments:
-h, --help show this help message and exit
--create create instance
--clone clone instance
--terminate terminate instance
--region REGION
--instance_name INSTANCE_NAME
--image_id IMAGE_ID
--instance_type INSTANCE_TYPE
--key_name KEY_NAME
--security_group_ids SECURITY_GROUP_IDS
--subnet_id SUBNET_ID
--src_instance_name SRC_INSTANCE_NAME
--dest_instance_name DEST_INSTANCE_NAME
--private_ip_address PRIVATE_IP_ADDRESS
--instance_id INSTANCE_ID
--volume_size VOLUME_SIZE
in GiB
--volume_type {standard,io1,gp2}
--volume_zone VOLUME_ZONE
--volume_iops VOLUME_IOPS
--volume_delete_on_termination
delete volumes on termination
--load_balancer_name LOAD_BALANCER_NAME
--quick no wait on termination
$ ./awscli.py –create –region us-west-1 –instance_name idc1-server1 –image_id ami-30f01234
–instance_type t1.micro –key_name idc1-keypair1 –security_group_ids sg-eaf01234f
–subnet_id subnet-6d901234 –volume_size 10 –volume_type gp2 –volume_zone us-west-1a
–volume_delete_on_termination –load_balancer_name idc1-elb1 –private_ip_address 172.16.2.21
1. Launching instance: idc1-server1
2. Creating tag as instance name: {"Name": idc1-server1}
Instance state: pending
Instance state: running
3. Creating secondary volume for instance: idc1-server1 as gp2 10G
Volume status: available
4. Attaching volume: vol-4ba6a54c to instance: idc1-server1 as device: /dev/sdf
5. Adding instance: idc1-server1 to ELB: idc1-elb1
$ ./awscli.py –clone –region us-west-1 –src_instance_name idc1-server1 –dest_instance_name idc1-server2
1. Launching instance: idc1-server2
2. Creating tag as instance name: {"Name": idc1-server2}
Instance state: pending
Instance state: running
3. Creating secondary volume for instance: idc1-server2 as gp2 10G
Volume status: available
4. Attaching volume: vol-5b61635c to instance: idc1-server2 as device: /dev/sdf
5. Adding instance: idc1-server2 to ELB: idc1-elb1
$ ./awscli.py –terminate –region us-west-1 –instance_name idc1-server2
Terminating instance: idc1-server2 id: i-86976d62 Instance state: shutting-down Instance state: shutting-down Instance state: terminated
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