How to Programmatically get Amazon IP Ranges/CIDRs

Amazon Web Services (AWS) operates an extensive network infrastructure with a vast number of IP addresses and CIDR blocks. As a developer or network administrator, you may need to programmatically retrieve the IP ranges or CIDRs associated with AWS regions and services for various reasons, such as configuring firewall rules or network security groups. In this guide, we’ll show you how to accomplish this using Python. Prerequisites Before we dive into the code, make sure you have the following prerequisites in place:

The Ultimate Guide to Emacs: Mastering the Art of CLI Programming

In the realm of command-line interface (CLI) programming, Emacs stands as a legendary text editor, known for its immense power and unparalleled extensibility. For decades, Emacs has been the tool of choice for seasoned CLI programmers who demand efficiency and customization. In this ultimate guide, we will explore advanced and expert ways to harness the full potential of Emacs, helping you become an amazing CLI programmer. Introduction to Emacs What is Emacs?

The Ultimate Guide to VI: Mastering the Art of CLI Programming

In the world of command-line interface (CLI) programming, efficiency is paramount. And when it comes to text editing in the CLI, there’s no tool more legendary than VI. This powerful, yet enigmatic text editor has been the choice of seasoned CLI programmers for decades. In this ultimate guide, we will explore advanced and expert ways to harness the full potential of VI, helping you become an amazing CLI programmer. Introduction to VI What is VI?

AWS Assume to another role

1 2 3 4 5 OUT=$(aws sts assume-role --role-arn arn:aws:iam::0123456789:role/OrganizationAccountAccessRole --role-session-name test) export AWS_ACCESS_KEY_ID=$(echo $OUT | cut -d '"' -f 6 ) export AWS_SECRET_ACCESS_KEY=$(echo $OUT | cut -d '"' -f 10 ) export AWS_SESSION_TOKEN=$(echo $OUT | cut -d '"' -f 14 ) aws sts get-caller-identity

Programming Languages Series

1. Introduction Welcome to our Programming Languages Series! In this series, we’ll explore various programming languages, understand their purposes, provide code examples, and discuss when to use each one. Let’s begin with an introduction to programming languages. What Are Programming Languages? Programming languages are a means of communication between humans and computers. They allow developers to instruct computers to perform specific tasks, ranging from simple calculations to complex data processing and application development.

Docker Deep Dive Series

1. Getting Started In this first part of the series, we will kick things off by getting Docker installed and running on your system. Docker makes it easy to package and distribute applications as containers, ensuring consistent environments across different stages of the development and deployment pipeline. Let’s jump right in and get Docker up and running! Prerequisites Before we start, ensure that you have the following prerequisites installed on your system:

Machine Learning Mastery Series

Part 1. Introduction to Machine Learning Welcome to the Machine Learning Mastery Series, a comprehensive journey into the exciting world of machine learning. In this first installment, we’ll lay the foundation by exploring the fundamentals of machine learning, its types, and the essential concepts that underpin this transformative field. What is Machine Learning? Machine learning is a subfield of artificial intelligence (AI) that focuses on developing algorithms and models that enable computers to learn from and make predictions or decisions based on data.

Kubernetes Mastery

Part 1. Introduction Welcome to the Kubernetes Mastery Series! In this first part, we’ll set up a Kubernetes cluster using KinD (Kubernetes in Docker). Prerequisites: Docker kubectl KinD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 # Step 1: Install Docker # Step 2: Install kubectl # Step 3: Install KinD # Step 4: Create a KinD cluster kind create cluster --name my-cluster --config - <<EOF kind: Cluster apiVersion: kind.

Managing Multiple Environments with Terraform Workspaces

Managing infrastructure across multiple environments such as development, staging, and production can be a daunting task. Terraform, a popular Infrastructure as Code (IaC) tool, offers a powerful feature known as workspaces that can help you efficiently manage and maintain separate environments within a single configuration. In this technical blog post, we’ll explore Terraform workspaces, how they work, and best practices for utilizing them effectively. Understanding Terraform Workspaces Terraform workspaces provide a way to manage distinct instances of the same infrastructure configuration.

Controlling and Understanding Parallelism Impact on the DAG

When working with large-scale infrastructure deployments, managing the provisioning and orchestration of resources efficiently becomes crucial. Terraform, a widely-used Infrastructure as Code (IaC) tool, offers a feature known as parallelism to accelerate the deployment process. In this blog post, we’ll delve into parallelism in Terraform, how it affects the Directed Acyclic Graph (DAG), and how you can control and optimize its usage. Understanding Parallelism and the DAG Parallelism refers to the ability to execute multiple tasks simultaneously.

How to add Payment Subscriptions with Stripe in Django

Integrating Stripe subscriptions into your Django site involves several steps. Here’s a high-level overview of the process. Please note that the exact implementation can vary based on your specific requirements. Steps involved Sign Up and Set Up Stripe Account If you haven’t already, sign up for a Stripe account at Once you’ve signed up, you’ll need your API keys: a Publishable Key (for the client-side) and a Secret Key (for server-side interactions).

Private Application Load Balancer for EKS in Terraform

Amazon Web Services (AWS) provides a powerful combination of services for building, deploying, and managing applications. Amazon Elastic Kubernetes Service (EKS) is a managed Kubernetes service that simplifies the process of deploying, managing, and scaling containerized applications using Kubernetes. In certain scenarios, you might want to deploy a private Application Load Balancer (ALB) in front of your private EKS cluster to handle incoming traffic efficiently. In this guide, we’ll walk through the process of setting up a private ALB for your private EKS cluster using Terraform, along with best practices and intricate details.

Kubernetes vs Docker Swarm for Container Orchestration

Container orchestration has become a cornerstone of modern application deployment and management. Two prominent contenders in the realm of container orchestration are Kubernetes and Docker Swarm. Both offer powerful solutions for automating the deployment, scaling, and management of containerized applications. In this in-depth comparison, we’ll delve into the strengths, features, and nuances of Kubernetes and Docker Swarm to help you make an informed choice for your container orchestration needs. Understanding Kubernetes Kubernetes, often referred to as K8s, has emerged as a de facto standard for container orchestration.

Setting Comprehensive CI/CD Pipeline with Jenkins and Docker

In today’s dynamic software landscape, the fusion of Continuous Integration and Continuous Deployment (CI/CD) pipelines with robust tools like Jenkins and Docker has emerged as a cornerstone of efficient and reliable application delivery. This detailed tutorial will provide you with an in-depth walkthrough, guiding you step by step through the intricate process of configuring a comprehensive CI/CD pipeline using Jenkins and Docker. By the end of this tutorial, you’ll be equipped to seamlessly incorporate DevOps practices, elevating your software delivery process to new heights.

Navigating Microsoft Azure for Seasoned AWS Experts

In the ever-evolving landscape of cloud computing, two mammoth players, Amazon Web Services (AWS) and Microsoft Azure, have emerged as titans, offering an extensive array of services that cater to a diverse spectrum of business needs. If you’ve already amassed a wealth of knowledge and experience in AWS and are now yearning to broaden your cloud horizons, this comprehensive guide is designed to be your compass. Together, we’ll embark on a journey to seamlessly transition your AWS proficiency into the realm of Microsoft Azure, unraveling parallels between their services and enriching your cloud expertise.

Navigating Google Cloud Platform (GCP) for AWS Experts

In today’s rapidly evolving landscape of cloud computing, Amazon Web Services (AWS) and Google Cloud Platform (GCP) have emerged as prominent contenders, furnishing an extensive array of services tailored to cater to the dynamic requirements of modern businesses. If you’re already versed in the intricacies of AWS and are now seeking to broaden your cloud horizons, this comprehensive guide is poised to be your beacon. We’ll embark on a journey of bridging the gap between your existing AWS proficiency and your newfound GCP expertise, ensuring your transition is not just smooth, but also illuminating.

Create a slug from a name in MySQL/MariaDB

How to create a slug from the name of an item in MySQL/MariaDB. 1 2 UPDATE my_table SET slug = LOWER(REGEXP_REPLACE(REPLACE(REPLACE(REPLACE(name, ' ', '-'), 'and', '-'), '[^a-zA-Z0-9-]', ''), '-+', '-'));

Secure Efficient Server Management with AWS Systems Manager

In the ever-evolving landscape of cloud computing, AWS (Amazon Web Services) continually introduces innovative solutions to enhance operational efficiency, security, and ease of management. One such powerful tool is AWS Systems Manager (SSM), which empowers users to manage their server infrastructure without the need for SSH access and traditional EC2 key pairs. In this comprehensive guide, we’ll delve into setting up AWS SSM, exploring its advanced use cases, and demonstrating how it can transform your workflow.

How to Get a List of Available Regions from AWS CLI

AWS (Amazon Web Services) is a prominent cloud service provider that offers a wide range of services to businesses and individuals worldwide. One of the fundamental concepts in AWS is regions, which are distinct geographical locations hosting AWS infrastructure. Understanding regions is crucial for optimizing your cloud infrastructure’s performance, data residency, and compliance requirements. In this blog post, we’ll dive into the world of AWS regions, learn how to list available regions using the AWS CLI, and explore a handy command to fetch region details in a more reader-friendly format.

[Solved] A Number After a Double Reversal in Python

The problem Reversing an integer means to reverse all its digits. For example, reversing 2021 gives 1202. Reversing 12300 gives 321 as the leading zeros are not retained. Given an integer num, reverse num to get reversed1, then reverse reversed1 to get reversed2. Return true if reversed2 equals num. Otherwise return false. Example 1: 1 2 3 Input: num = 526 Output: true Explanation: Reverse num to get 625, then reverse 625 to get 526, which equals num.