Ravikant Kushwaha

 India, Pune
I’m a passionate IT professional with expertise in AWS, DevOps automation, and scalable system design. I enjoy solving complex infrastructure challenges and delivering robust cloud-native solutions. https://ituptodate.com

Ravikant Kushwaha's articles

  1. AWS (Amazon Web Services)

Understanding AWS Load Balancer Routing with Cloudflare and Different Clients

When deploying web applications on AWS using multiple Network Load Balancers (NLBs), understanding how traffic is routed across different clients—such as browsers (Chrome, Edge, Firefox, Safari) and mobile apps (React Native-based)—is essential. This article explores how routing works when using Cloudflare DNS with and without the proxy feature enabled. 1. Overview of Routing Mechanisms When […]
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Shell Script and MySQL
  1. Linux

How to Write a Secure Shell Script to Run MySQL Queries via Cron

Shell scripting is one of the most powerful tools available on Linux and UNIX-like systems, allowing developers and system administrators to automate repetitive tasks, run SQL queries, and maintain servers efficiently. One common use case is updating database records automatically using cron jobs. In this tutorial, we’ll walk you through creating a shell script that […]
Written by
linux grep command
  1. Linux

Mastering the grep Command in Linux – From Beginner to Advanced

Whether you’re just starting with Linux or you’re a seasoned developer, the grep command is an essential tool in your command-line arsenal. If you need linux commands for common task, you can read this article, Linux CheatSheet for common tasks In this article, we’ll walk through: Let’s dive in! ✅ What is GREP in Linux? […]
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  1. AWS (Amazon Web Services)

How to Set Up WordPress with CloudFront on AWS Using ALB and Private Subnets

Looking to host a fast, secure, and scalable WordPress site on AWS? In this step-by-step tutorial, we’ll walk you through how to set up WordPress using Amazon CloudFront, an Application Load Balancer (ALB), and private subnets—perfect for both test and production environments. Using our demo domain wp.ituptodate.com, this guide is ideal for beginners looking to […]
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  1. AWS (Amazon Web Services)
  2. VPC

Configuring an EC2 Instance as a NAT for Private Subnet EC2 – A Cost-Optimized Alternative to NAT Gateway

In AWS, providing internet access to EC2 instances in private subnets is a common requirement for secure architectures. While AWS offers the managed NAT Gateway service for this purpose, it comes with a cost—approximately $32/month per gateway plus data transfer fees. For small-scale projects, startups, or cost-conscious developers, this can add up quickly. Fortunately, you […]
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  1. Cheat Sheet
  2. Linux

Linux CheatSheet for common tasks

1. File and Directory Management ls -lah # List files with details (including hidden)cd /path/to/dir # Change directorypwd # Show current directorymkdir newdir # Create a directoryrmdir emptydir # Remove empty directoryrm -rf dir_or_file # Remove file or directory forcefullycp file1 file2 # Copy filemv file1 file2 # Move/rename filefind /path -name "*.txt" # Find […]
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  1. Digital Ocean

How I Scaled a WordPress Server Horizontally at Robu.in – A Self-Managed Success Story

Scaling a WordPress server horizontally in a self-managed environment is no small feat, especially when you’re not leveraging fully managed cloud services like AWS, Azure, or GCP. This was one of the most challenging and rewarding projects I undertook during my time at Robu.in. By configuring and optimizing virtual machines (VMs) on DigitalOcean, we achieved […]
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  1. Cheat Sheet
  2. Docker

Docker cheatsheet

🚀 Docker Basics Version & Help docker --version # Check Docker versiondocker info # Show system-wide informationdocker help # Show all commandsdocker <command> --help # Get help for a specific command 📦 Container Management Running Containers docker run hello-world # Run a test containerdocker run -it ubuntu bash # Run a container interactivelydocker run -d […]
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  1. Redis

Session Persistence for Scalable WordPress Applications with Redis

When scaling WordPress applications to handle high traffic, maintaining session persistence across multiple servers becomes a critical challenge. Without a centralized mechanism to manage session data, users may experience issues like login errors or inconsistent shopping carts. This article explores how Redis, an advanced in-memory data store, can be leveraged to ensure seamless session persistence […]
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  1. AWS (Amazon Web Services)

Setting Up AWS CloudWatch Alarm for EC2 CPU Usage with Email Alerts

Introduction Monitoring EC2 instances is crucial for ensuring optimal performance and preventing issues like underutilization or overloading. AWS CloudWatch allows users to track metrics and set up alarms to trigger notifications based on predefined conditions. In this guide, we’ll walk through setting up a CloudWatch alarm to send email alerts when an EC2 instance’s CPU […]
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  1. AWS (Amazon Web Services)
  2. DNS
  3. Networking

Understanding AWS Load Balancer Routing with Cloudflare and Different Clients

When deploying web applications on AWS using multiple Network Load Balancers (NLBs), understanding how traffic is routed across different clients—such as browsers (Chrome, Edge, Firefox, Safari) and mobile apps (React Native-based)—is essential. This article explores how routing works when using Cloudflare DNS with and without the proxy feature enabled. 1. Overview of Routing Mechanisms When […]
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