darkn3rd

I would first establish the workload characteristics and scaling target: current and expected traffic, read/write ratio, latency objective, data volume, availability requirements, regional requirements, and budget. Then I would scale each tier independently, because the application, cache, and database have different bottlenecks and consistency trade-offs.

1. Start with requirements

Before choosing an architecture, I would ask:

• Is traffic steady, bursty, or seasonal?
• Is the application stateless?
• What are the read/write ratios?
• What is the current bottleneck?

darkn3rd

#!/usr/bin/env bash
set -euo pipefail

if [[ ! -f "./vpc-outputs.env" ]]; then
  echo "ERROR: vpc-outputs.env not found in current directory." >&2
  exit 1
fi

source ./vpc-outputs.env

darkn3rd

#!/usr/bin/env bash

update_homebrew_path() {
  # Google Style: Declare locals at the top.
  # Capitalized because these will hold environment-like path strings.
  local BREW_PREFIX
  local GNU_PATHS
  local KEG_PATHS
  local RAW_COMBINED
  local DEDUPE_LOGIC

darkn3rd

Pedantic ADHD Guide to Kubenretes Provisioning

This is my guide for how to get Kubernetes provisioned using Azure, Google Cloud, or AWS using CLI tools. This will require setting up an account with local CLI tools. The goal of this is to quickly set up a disposable test clusters in minimalist way.

The Tools

Some tools used here:

• General
• direnv (direnv) - used to setup environment variables automatically

darkn3rd

# Command Line Tools
xcode-select --install

# Download XCode
# Instructions: https://stackoverflow.com/questions/4081568/downloading-xcode-with-wget-or-curl
# URL: https://download.developer.apple.com/Developer_Tools/Xcode_10.1/Xcode_10.1.xip
sudo xcodebuild -license

# Mojave only - need headers or nothing works
TOOLS_PATH="/Library/Developer/CommandLineTools/"

darkn3rd

What is the difference between cpan and cpanm?

This was explanation by Grant McLean

CPAN CLI

cpan the CPAN shell has been shipped with Perl since about 1997. When you run it the first time it asks a bunch of questions and saves the answers in a config file. Then you can install a module by running:

cpan -i Module::Name

The shell provides other commands for searching CPAN and looking inside distribution files.

darkn3rd

##################
#  Install Terraform with tfenv
#  Ref: https://github.com/GoogleCloudPlatform/terraformer#installation
#  For macOS with Homebrew: brew install tfenv
#############################
git clone https://github.com/tfutils/tfenv.git ~/.tfenv
export PATH="$HOME/.tfenv/bin:$PATH"
echo 'export PATH="$HOME/.tfenv/bin:$PATH"' >> ~/.bashrc
# install Terraform
tfenv install latest

darkn3rd

variable "records" {
  description = "Cloudflare DNS zone records"
  type = set(object({
    tf_obj_id = string # tf key used to organize records
    name      = string
    proxied   = bool
    value     = string
    priority  = number
    ttl       = number
    type      = string

darkn3rd

# Run Script to fetch monitors 
# --------------------------------------
# WORKSPACE=$(terraform workspace show)
# [[ -d "./tfvars" ]] && VAR_DEFS_PATH="./tfvars"
# [[ -d ".././tfvars" ]] && VAR_DEFS_PATH=".././tfvars"
# [[ -z "$VAR_DEFS_PATH" ]] && { echo 'VAR_DEFS_PATH not specified. Aborting' >&2 ; exit 1; }
# DD_API_KEY="$(awk -F'"' '/dd_api_key/{ print $2 }' $VAR_DEFS_PATH/$WORKSPACE.secret.tfvars)"
# DD_APP_KEY="$(awk -F'"' '/dd_app_key/{ print $2 }' $VAR_DEFS_PATH/$WORKSPACE.secret.tfvars)"
# [[ -z "$DD_API_KEY" ]] && { echo 'DD_API_KEY not specified. Aborting' >&2 ; exit 1; }
# [[ -z "$DD_APP_KEY" ]] && { echo 'DD_APP_KEY not specified. Aborting' >&2 ; exit 1; }

darkn3rd

variable "pipelines" {
  description = "List of pipelines with their processors"
  type = list(any)
}

resource "datadog_logs_custom_pipeline" "pipelines" {
  for_each = { for idx, pipeline in var.pipelines : idx => pipeline }

  name       = each.value.name
  is_enabled = each.value.is_enabled