tomislacker

#!/bin/bash

find_all_groups ()
{
    aws ec2 describe-security-groups \
        --query 'SecurityGroups[*].GroupId' \
        --output text \
    | tr '\t' '\n' \
    | sort -u
}

tomislacker

tomislacker

How to create a publicly-accessible SNS topic that sends messages when objects are added to a public Amazon S3 bucket.

1. Create something within AWS that triggers notifications.

In this case, that's an S3 bucket that is continually updated by the addition of new sensor data. For the purposes of this tutorial, we’ll use s3://noaa-nexrad-level2 – one of our NEXRAD on AWS buckets – as an example.

2. Create an SNS topic and appropriate policy.

The SNS topic should be in the same region as the bucket. It will need to have a policy that allows our S3 bucket to publish to it, and anyone to subscribe to it using Lambda or SQS.

tomislacker

tomislacker

#!/usr/bin/env python
"""
EC2 Instance Killer

Usage:
    ec2_kill_with_fire.py [options] <instance_id>...

Options:
    -h, --help              Show this dialog
    -r, --region NAME       EC2 region [default: us-east-1]

tomislacker

#!/usr/bin/env python
"""
USAGE: etag.py {file} [chunk size in bytes]

Calculates the S3 ETag of a multi-part upload

$ ./etag.py Downloads/c2560cf.zip
Downloads/c2560cf.zip 56daa8b3846a358207edc89e9bb90309-6
"""
from __future__ import print_function

tomislacker

#!/bin/bash

WINDOW=Tue:15:00-Tue:15:30

set_window ()
{
    local db_id=$1
    aws rds modify-db-instance \
        --db-instance-identifier $db_id \
        --preferred-maintenance-window $WINDOW

tomislacker

tomislacker

#!/usr/bin/env python
from __future__ import print_function
import boto3
import sys

s3 = boto3.resource('s3')

try:
    bucket = s3.Bucket(sys.argv[1])
except IndexError:

tomislacker

#!/usr/bin/env python

from __future__ import print_function
import boto3
import sys


r53 = boto3.client('route53')