cmerrick’s gists

cmerrick / get-role-token

Created May 17, 2015 18:58

Prints the exports required to install an AWS Role's temporary keys to stdout

	#!/usr/bin/env python

	import socket
	import json
	import sys
	import os
	import re
	from subprocess import Popen, PIPE
	from pprint import pprint

cmerrick / aws-assume-role

Created May 17, 2015 19:06

Helper functions for installing AWS Role temporary keys into your environment

	aws-reset ()
	{

	unset AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY \
	AWS_SECURITY_TOKEN AWS_SESSION_TOKEN \
	AWS_ROLE_NAME AWS_ROLE_EXPIRATION
	source "/etc/profile.d/aws-env.sh"
	}

	assume-role ()

cmerrick / truncate-db

Created October 20, 2015 02:50

Truncate all tables in a MySQL DB

	#!/bin/bash

	DB=$1

	mysql -Ne "SELECT TABLE_NAME FROM TABLES WHERE TABLE_SCHEMA='$1'" INFORMATION_SCHEMA \| while read TABLE; do
	mysql -Ne "TRUNCATE \`$TABLE\`" $DB
	done

cmerrick / lineitem-tojson.awk

Created October 21, 2015 01:37

TPC-H json and avro wrangling

cmerrick / bkadb-data-gen.sh

Last active December 19, 2022 03:31

Better Know a Database - Redshift Load Data Formats

	#!/bin/sh
	# OS: Ubuntu 14.01
	# Generate data - produces about 200GB on disk, takes a while

	DATADIR=tpch-dbgen
	SCALE=1000

	git clone https://github.com/electrum/tpch-dbgen.git
	cd $DATADIR && make && ./dbgen -f -v -C 16 -S 1 -s $SCALE && cd -

cmerrick / bkadb-compress-data-gen.sh

Last active February 18, 2021 07:11

Better Know a Database - Redshift Load Compression

	#!/bin/bash
	# OS: Ubuntu 14.01
	# Generate data - produces about 100GB on disk, takes a while

	DBGEN_DIR=tpch-dbgen
	SCALES=(1 10 100)
	ORIGIN=`pwd`
	S3_DIR="s3://your-bucket-here"
	TABLES=(customer lineitem nation orders part partsupp region supplier)

cmerrick / gist:61f67a8a11608a845493

Created March 1, 2016 17:35

redshift-node-count

aws redshift describe-clusters | jq '.Clusters[] | .NumberOfNodes' | awk '{s+=$1} END {print s}'

cmerrick / role-playing-with-aws.policy-example.json

Created August 15, 2016 14:18

	{
	"Version": "2012-10-17",
	"Statement": [
	{
	"Effect": "Allow",
	"Action": [
	"sts:AssumeRole"
	],
	"Resource": [
	"arn:aws:iam::000123456789:role/YourRoleName"

cmerrick / example.SQUARE

Created September 15, 2016 13:45

An example of the SQUARE syntax

	EMP ('TOY')
	NAME DEPT

cmerrick / rds_snapshot_copier.bash

Last active June 20, 2017 15:19

rds_snapshot_copier.bash

	#!/bin/bash

	# Copies the most recent snapshot associated with one or more
	# RDS instances from us-east-1 to us-west-1
	#
	# Tested with
	# $ aws --version
	# aws-cli/1.11.108 Python/3.5.2 Linux/4.4.0-81-generic botocore/1.5.71
	#
	# Does not work with aws-cli/1.10.x or earlier.

Christopher Merrick cmerrick