ec2.py 0.1.4

Simple CLI / module to create/start/stop EC2 instances

# ec2.py

> Simple CLI / module to create/start/stop EC2 instances. > Originally created to spin up instances to compile Python extensions for AWS Lambda projects.

Pypi Link: https://pypi.python.org/pypi/ec2.py

Features:

• Single command creation of security key and instance

• Idempotent, repeated calls do not result in multiple instances

• Waits for AWS tasks to complete and provides confirmation.

Supports:

• AWS Profiles

• Instance type specification

• Key generation

• Start/stop/terminate Instances

## Notes

By design, the application binds instance creation to a key file (custom name can be specified). This allows enhanced security around managing the life cycle of an instance, but requires creation of more than one keyfile for multiple instances.

## Installation

• Install:

  • pip install ec2.py –upgrade

## Setup

• Configure AWS Credentials: aws configure

  • Install AWS CLI: pip install –upgrade –user awscli

  • See

    • http://docs.aws.amazon.com/cli/latest/userguide/installing.html

    • http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html

## Usage

• ec2 - Creates a new AWS instance of t2.nano, and a new Key ec2.py if either do not exist. If these already exist, will start the instance if stopped.

• ec2 -s - Stop the instance. If one does not exist, will create a key and new instance.

• ec2 -r - Remove the instance (terminates) and delete the key.

• ec2 -i - Print the public dns name. Allows calling from another bash script.

• ec2 -i -v - Print the instance type, ami image, public ip address, public dns name.

• ec2 -p myProfile -k myKey -t t2.medium - Use a custom profile, key name and instance type.

• ec2 -h - Help

## SSH to a created instance:

• Make sure the pem key has chmod 0600, example: chmod 600 ec2.py.pem

• Make sure the security group for the instance has port 22 connectivity allowed.

• Get the Public DNS name for the instance: ec2 -i

• Connect: ssh ec2-user@DNS_NAME -i ec2.py.pem

## Developer Setup

• Install VirtualEnvWrapper

  • sudo pip install virtualenvwrapper –upgrade

  • echo “source /usr/local/bin/virtualenvwrapper.sh” >> ~/.bashrc”

• Create / switch to Virtual Env

  • mkvirtualenv ec2 or workon ec2

• Setup

  • make setup

## AMI Info

• AMI used: amzn-ami-hvm-2016.03.3.x86_64-gp2 (ami-6869aa05)

• Selected based on compatability with AWS Lambda environment

## Articles

• http://www.perrygeo.com/running-python-with-compiled-code-on-aws-lambda.html

• https://markn.ca/2015/10/python-extension-modules-in-aws-lambda/

## Links

• http://docs.aws.amazon.com/lambda/latest/dg/current-supported-versions.html

• http://boto3.readthedocs.io/en/latest/reference/services/ec2.html