pcolazurdo

var observer = new IntersectionObserver(function (entries) {
    // isIntersecting is true when element and viewport are overlapping
    // isIntersecting is false when element and viewport don't overlap
    if (entries[0].isIntersecting === true)
        console.log(entries[0].target.id);
}, { threshold: [0] });

// Observe all H2 headings and get their id printed into the console whenever they are in focus
document.querySelectorAll("h2").forEach(function (item) {
    observer.observe(document.querySelector("#" + item.id));

pcolazurdo

# very basic but you can see the gist of it:

aws cloudformation list-types --type RESOURCE --visibility PUBLIC | \
  jq '.TypeSummaries[].TypeName' | \
  cut -d\" -f2 | \
  while read a
  do
    aws cloudcontrol list-resources --type-name  $a 2>/dev/null| \
    jq '.ResourceDescriptions[].Identifier'
  done

pcolazurdo

1. SRE deep dive into Linux Page Cache

pcolazurdo

// This sample code triggers the problem if run against a large directory structure (+50K objects)
// I added some instrumention to check how many connections were being resued versus created new
// Please change the table name in line 283 and path in line 286

package main

import (
	"context"
	"crypto/md5"
	"strings"

pcolazurdo

Download the file from

wget https://status.aws.amazon.com/data.json

basic parsing

jq -r '(.archive[] | 
       (.date| tonumber | todate) as $D | 
       select($D | startswith("2021"))| 
 [.service_name, $D[0:10] ,.service,.summary]) | @csv ' \

pcolazurdo

ldd /var/task/node_modules/puppeteer/.local-chromium/linux-869685/chrome-linux/chrome | grep not | \
    cut -d= -f1 | while read a 
    do   
        yum provides $a | head -2 | tail -1 | cut -d\  -f1
    done

pcolazurdo

FROM ubuntu:18.04

ARG openssl_arch=linux-x86_64
ENV RUSTUP_HOME=/usr/local/rustup \
    CARGO_HOME=/usr/local/cargo \
    PATH=/usr/local/cargo/bin:$PATH \
    DEBIAN_FRONTEND=noninteractive 

RUN apt-get update \
    && apt-get -y install curl wget lsb-release wget software-properties-common \

pcolazurdo

# Config file to add a Prometheus receiver - not fully as I can't make it scrape another process yet
extensions:
  health_check:

receivers:
  prometheus:
    config:
      scrape_configs:
        - job_name: "otel-collector"
          scrape_interval: 5s

pcolazurdo

How to setup a git repo for your dotfiles

For general guidance follow this great write up: https://www.atlassian.com/git/tutorials/dotfiles

In summary:

On the main computer:

git init --bare $HOME/.cfg
alias dotfiles='/usr/bin/git --git-dir=$HOME/.cfg/ --work-tree=$HOME'

pcolazurdo

import json
import boto3
import argparse


class Args(object):
    import argparse

    parser = argparse.ArgumentParser(
        description='Allows user to execute a local script using SSM Run Commands')