gurchik

update-tags.py

Update EC2 tags for instances in an Auto Scaling Group.

When changing the tags for an Auto Scaling Group, these changes only apply to new instances launched. Therefore, you need something to apply the new tags to existing instances.

gurchik

aws_ip_search.py

Search the AWS IP Ranges document for a specific IP.

gurchik

Get all ECR images with more than 900 tags.

AWS has a hard limit of 1000 tags on any single image.

Attempting to push another tag on that image will result in an error like the following:

ERROR: failed commit on ref "index-sha256:......": unexpected status from PUT request to https://ACCOUNT_ID.dkr.ecr.REGION.amazonaws.com/v2/REPOSITORY/manifests/TAG_NAME: 403 Forbidden

In CloudTrail the error looks like:

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#!/bin/bash

7zip_installed() {
    builtin type -P "7zz" &> /dev/null
}

prompt_with_default() {
    read -p "$1 ($2):" INPUT
    if [ -z "$INPUT" ]; then
        echo "$2"

gurchik

Analyze S3 Usage Report

Format an AWS Usage Report for S3 charges to make it simpler to compare your usage to the public S3 Pricing page.

For example, the pricing page lists Tier 1 (i.e. PUT, COPY, POST, and LIST) requests at one cost and Tier 2 (GET, SELECT, and all others) requests at a different cost. However, the Usage Report lists requests by API call (e.g. GetObject, ListBucket, etc). This is a bit annoying, so this script parses them into their respective billing tiers.

Instructions

1. Navigate to AWS Billing. Select "Cost & usage reports" then "Create a usage report"
2. Enter "Amazon Simple Storage Service" as the Service, "All usage types" for the Usage Type, "All Operations" for the Operations. Then select a time period and granularity.

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Get AMIs used by all EC2s in an account

Example output:

{
    "ami-123redacted": {
        "id": "ami-123redacted",
        "name": "The name of the AMI",
 "instances": {

gurchik

import boto3

client = boto3.client('route53')

def get_zones():
    paginator = client.get_paginator("list_hosted_zones")
    for page in paginator.paginate():
        yield from page["HostedZones"]

def get_records(zone_id):

gurchik

/*
1. Open the playlist in Spotify Web (logged in if it's a private playlist)
2. Paste this in the browser's Developer Tools

For playlists longer than a handful of tracks, the entire track list won't be loaded in the DOM.
Scrolling down the page will rows from the top and vice versa. Therefore you will need to run this,
scroll down on the page to the last track outputted, run it again, etc until you get them all, then
combine the results together.
*/

gurchik

Keybase proof

I hereby claim:

• I am gurchik on github.
• I am gurchik (https://keybase.io/gurchik) on keybase.
• I have a public key ASC5ck8vPIzBuufV6z_77jz1rt3Wc5r9QKF72JxMkgwXKQo

To claim this, I am signing this object:

gurchik

; Allow the linker to find the _start symbol. The linker will begin program execution
; there.
global _start

; Start the .data section of the executable, which stores constants (read-only data)
; It doesn't matter which order your sections are in, I just like putting .data first
section .rodata
    ; Declare some bytes at a symbol called hello_world. NASM's db pseudo-instruction
    ; allows either a single byte value, a constant string, or a combination of the two
    ; as seen here. 0xA = new line, and 0x0 = string-terminating null