DEV Community: Sakshi More

Day 3 — Linux Permissions for DevOps (AWS EC2) #40 days

Sakshi More — Sat, 13 Dec 2025 18:14:18 +0000

Today, on Day 3 of my 40-day AWS DevOps challenge, I focused on understanding Linux permissions, which are critical for real-world DevOps work on EC2.

What I Learned Today

1️⃣ Linux File Permissions

Read (r)

Write (w)

Execute (x)

Permission groups: Owner | Group | Others

Example:

-rwxr-xr--

chmod — Change Permissions
Used to allow or restrict access to files and scripts.

Examples:

chmod 755 script.sh
chmod +x deploy.sh

chown — Change Ownership
Used when fixing permission issues after deployments.

Example:

sudo chown ec2-user:ec2-user app.log

Why Permissions Matter in DevOps

_
Scripts won’t run without execute permission

Web servers fail due to wrong ownership

CI/CD pipelines break due to access issues

What I Understood

Permission issues are very common in EC2

DevOps engineers solve many problems using chmod and chown

Understanding permissions saves a lot of debugging time

Practices :
I have also solved questions using ChatGPT

Day 2 — Beginning My 40 Days AWS DevOps Journey

Sakshi More — Thu, 11 Dec 2025 19:05:00 +0000

Today was Day 2 of my 40-day AWS + DevOps challenge.
I focused on strengthening Linux fundamentals because every DevOps job requires fast command-line skills — especially on EC2.

Here’s what I practiced today:

** File & Permissions **

chmod – make scripts executable
chown – fix file ownership
df -h – check disk space
du -sh – check folder size

** Processes & Services **

ps aux – list running processes
top – live CPU/RAM
systemctl status/start/restart – manage services (nginx, docker)

** Networking **

curl – check if a service/website is responding
ss -tulnp – check open ports

** Logs **

/var/log/ – main log directory
tail -f – watch logs in real time
journalctl -u – check service logs {This is for aws linux 2023}

** Pipes **
ps aux | grep nginx
tail -f messages | grep error

DAY1 AWS DevOps -beginner

Sakshi More — Wed, 10 Dec 2025 20:31:25 +0000

Day 1 — Beginning My 40 Days AWS DevOps Journey

Sakshi More ・ Dec 10

#devopsdailybysakshimore #aws #devops #beginners

Day 1 — Beginning My 40 Days AWS DevOps Journey

Sakshi More — Wed, 10 Dec 2025 20:15:29 +0000

** Day 1 — Beginning My 40 Days AWS DevOps Journey
**
✅ What I Did on Day 1

I focused on learning and practicing Linux basics using my Amazon Linux EC2 instance.

Commands I practiced:

Navigation: cd, pwd, ls

File/Folder: mkdir, touch, rm, cp, mv

Viewing: cat, nano, tail, head

Searching: grep, find

Networking: ip a, ping

These are essential for any DevOps engineer, and practicing them on EC2 made everything feel more real and practical.

Linux + AWS Basic Commands (Beginner Notes)

1. Navigation Commands

cd – Change directory
pwd – Show current location
ls – List files and directories

2. File/Folder Commands

mkdir – Create a new directory
touch – Create a new empty file
rm – Remove file
cp – Copy file or folder
mv – Move or rename file/folder

3. Viewing Commands

cat – View file content
nano – Edit file
tail – View last lines of a file
head – View first lines of a file

4. Searching Commands

grep – Search a keyword inside files
find – Search files or folders by name

5. Networking Commands
ip a – Show IP details
ping – Test internet or server connection

These commands are the fundamental building blocks for AWS EC2 and DevOps

40 Days AWS + DevOps Challenge (Beginner Job Ready)

Sakshi More — Wed, 10 Dec 2025 19:59:43 +0000

Hi! I'm Sakshi, an introverted girl taking a bold step toward my career.
Today, I begin my 40 Days AWS DevOps Challenge — a commitment to consistency, discipline, and growth.

This journey is my way of becoming job-ready and building confidence in my technical skills.

Why I Started This Challenge

I want to:

Build strong Linux fundamentals
Learn AWS services deeply
Understand DevOps tools
Become ready for my tech job

For a long time, I felt stuck and uncertain.
But today, I choose progress over fear — one day at a time.

Mastering the 3-Tier Web Architecture: A Dev's Guide

Sakshi More — Fri, 28 Mar 2025 17:33:42 +0000

Mastering the 3-Tier Web Architecture: A Dev's Guide

In the world of web applications, efficiency, scalability, and security are crucial. One of the most commonly used architectural patterns to achieve these goals is the 3-Tier Web Architecture. If you're diving into DevOps, cloud computing, or backend development, understanding this architecture is a must. Let's break it down in a way that makes sense.

What is 3-Tier Web Architecture?

Think of the 3-tier architecture as a well-structured apartment complex. Each floor has a specific purpose, ensuring smooth operations without interference. In a web application, these tiers are:

Presentation Tier (Client Layer) – This is the front-facing part of the application, where users interact. It includes web pages, mobile applications, or any UI framework. Technologies like HTML, CSS, JavaScript, React, and Angular rule this layer.

Application Tier (Logic Layer) – The brain of the architecture! This is where all the business logic happens, processing user requests and making decisions. It consists of backend technologies like Django, Node.js, Spring Boot, Flask, or Express.js.

Data Tier (Database Layer) – The foundation where all the data resides. It handles storage, retrieval, and management using relational (MySQL, PostgreSQL) or NoSQL (MongoDB, DynamoDB) databases.

Why Do We Use It? Adopting a 3-tier architecture isn’t just about keeping things neat; it offers several advantages:

Scalability: Since the tiers are independent, you can scale each component separately. If there's a surge in user traffic, scale the frontend and backend without overloading the database.

Security: Each tier can have its own security measures, ensuring that breaches in one layer don’t compromise the entire system.

Maintainability: Modular design means making updates or debugging is easier, as changes in one layer don’t disrupt the others.

Flexibility: Developers can use different technologies for each tier without affecting the entire application.

How It Works in a Real-World Scenario

Imagine you’re ordering food from an online platform:

The Presentation Tier displays the restaurant listings and a search bar.

When you select a dish and place an order, the Application Tier processes the request, verifies stock availability, and initiates payment processing.

The Data Tier stores order history, user information, and restaurant details, fetching data whenever required.

Implementing 3-Tier Architecture on AWS

If you're working in the cloud, AWS offers services to easily implement this model:

Presentation Tier: Amazon S3 (static web hosting), AWS Amplify, CloudFront.

Application Tier: EC2 instances, AWS Lambda, Elastic Beanstalk.

Data Tier: Amazon RDS, DynamoDB, S3 for backups.

My Project: Building a 3-Tier Web Application

I’m currently working on a project where I’m implementing a 3-Tier Web Architecture using AWS services. This hands-on experience is helping me understand how to structure applications efficiently, ensuring scalability and security. Stay tuned for more updates on my journey!

Final Thoughts The 3-tier architecture isn’t just a concept; it’s a backbone for scalable and secure applications. Whether you're an aspiring DevOps engineer or a full-stack developer, mastering this model will set you apart in the tech industry. So, the next time you build an application, consider structuring it in tiers—it might just be the key to a robust and efficient system!

AWS Networking Services and Use-Cases

Sakshi More — Sat, 08 Mar 2025 07:01:11 +0000

AWS networking is a critical component of Amazon Web Services (AWS), enabling users to create secure, scalable, and reliable cloud infrastructure. It provides various services and features to connect, secure, and manage traffic across AWS resources. Here's a comprehensive breakdown of AWS networking:

Amazon Virtual Private Cloud (VPC) VPC is a logically isolated section of AWS that enables you to launch AWS resources in a virtual network you define.

Subnets: VPCs are divided into subnets, which can be public (accessible from the internet) or private (isolated from the internet).

Route Tables: Control the traffic routing within the VPC and between the VPC and external networks. NAT

Gateways: Allow private instances to access the internet without being exposed to inbound traffic from the internet.

Internet Gateways (IGW): Enable public instances to access the internet. VPC Peering: Connects two VPCs to allow traffic between them. VPC Endpoints: Allow connections to AWS services without using the internet, enhancing security.

Amazon Elastic Load Balancer (ELB) ELB automatically distributes incoming application traffic across multiple targets, such as EC2 instances, containers, and IP addresses.

Types of ELB:
Application Load Balancer (ALB): Best for HTTP/HTTPS traffic and Layer 7 routing.

Network Load Balancer (NLB): Handles large amounts of TCP and UDP traffic, working at Layer 4.

Gateway Load Balancer (GWLB): Deploys and manages third-party virtual appliances (e.g., firewalls, intrusion detection systems).

Amazon Route 53 Route 53 is a scalable Domain Name System (DNS) web service for translating human-readable domain names into IP addresses.

Routing Policies:
Simple Routing: Basic DNS resolution.

Weighted Routing: Split traffic across different resources based on weights.

Latency-Based Routing: Route users to the endpoint with the lowest latency.

Failover Routing: Automatically route traffic to a standby resource when the primary resource fails.

Geolocation Routing: Route users based on their geographical location.

AWS Direct Connect
Direct Connect provides a dedicated network connection from your on-premises environment to AWS. It offers private, high-bandwidth connections that bypass the public internet, providing lower latency and greater security.
Amazon CloudFront
CloudFront is a global Content Delivery Network (CDN) service that securely delivers data, videos, applications, and APIs to users worldwide with low latency and high transfer speeds. It integrates with services like S3, EC2, and Lambda Edge. It uses edge locations to cache content closer to users for faster access.
AWS Transit Gateway
Transit Gateway connects VPCs and on-premises networks through a central hub, simplifying network architecture. It supports multicast, VPN attachments, and inter-region peering. Transit Gateway helps scale network infrastructure and simplifies routing and security policies.
AWS VPN (Virtual Private Network)
Site-to-Site VPN: Connects on-premises networks to AWS VPCs using IPsec tunnels. Client VPN: Provides secure access for individual users to your AWS network.
Security Groups and Network Access Control Lists (NACL)
Security Groups: Virtual firewalls that control inbound and outbound traffic at the instance level. They are stateful, meaning changes in outbound rules automatically allow return traffic for inbound requests. NACLs: Stateless firewalls that control traffic at the subnet level. They require explicit rules for both inbound and outbound traffic.
Elastic IP (EIP)
Elastic IP is a static, public IP address that you can allocate to your AWS account and associate with your EC2 instances or other resources. It helps ensure that your resource remains reachable even if the underlying instance is stopped and restarted.
AWS PrivateLink
PrivateLink allows you to access AWS services and third-party applications in a VPC securely without exposing your traffic to the internet. It uses VPC endpoints to provide secure connectivity to services.
Amazon Global Accelerator
Global Accelerator uses AWS's global network to improve the availability and performance of your applications by directing traffic to optimal endpoints.
AWS Wavelength
Wavelength extends AWS infrastructure to 5G networks for ultra-low latency applications. It integrates AWS compute and storage services with telecommunications provider networks.
AWS App Mesh
App Mesh provides application-level networking for microservices. It simplifies service discovery, traffic management, and monitoring of microservices across your infrastructure.
AWS Elastic Network Interfaces (ENI)
ENI is a virtual network interface that you can attach to an instance in a VPC. You can attach multiple ENIs to an EC2 instance, giving it multiple IP addresses.
Elastic Fabric Adapter (EFA)
EFA is a network interface for EC2 instances that enables low-latency communication for high-performance computing (HPC) and machine learning workloads.
AWS Network Firewall
Network Firewall is a managed service that provides network protections, including traffic filtering and threat prevention, in your VPCs.
AWS Outposts
Outposts extend AWS infrastructure, services, APIs, and tools to your on-premises environment, allowing for hybrid cloud setups.
AWS Virtual Private Network (VPN)
AWS Client VPN: Enables secure access to AWS resources from client devices. AWS Site-to-Site VPN: Connects your on-premises or remote networks to AWS using IPsec VPN tunnels.

Common Use Cases for AWS Networking:
Hybrid Cloud Architecture: Use AWS Direct Connect, VPN, or Transit Gateway to create a hybrid architecture that connects on-premises data centers to AWS.

Content Delivery and Caching: Use CloudFront and Route 53 to deliver content with low latency to global users. Microservices Networking: App Mesh enables service discovery, traffic management, and monitoring for microservices architectures.

Security-First Networking: To create secure network environments, use VPCs, security groups, NACLs, the AWS network firewall, and PrivateLink.

High Availability and Fault Tolerance: Leverage ELB, Route 53, and Global Accelerator for reliable and high-performing applications across multiple regions.

Conclusion:

AWS networking services offer flexibility, scalability, and robust security features to support different use cases, from small-scale applications to enterprise-level systems. Each service can be integrated to create a reliable and secure network infrastructure in the AWS cloud.

Hosting a Static Website with AWS S3 & CloudFront – A Quick Demo!

Sakshi More — Fri, 07 Mar 2025 07:51:16 +0000

🚀 Hosting a Static Website with AWS S3 & CloudFront – A Quick Demo!

Hey Devs! 👋

I recently worked on a project where I hosted a static website using AWS S3 & CloudFront, and I wanted to share my experience with you all! 🎥✨

🎯 What’s Covered in the Video?

✅ Setting up an S3 bucket for static website hosting

✅ Configuring CloudFront for content delivery

✅ Handling permissions & caching

✅ Final website demo

📹 Check out the video here: [ https://www.linkedin.com/posts/sakshismore_webdevelopment-cloudcomputing-aws-activity-7267463949690785792-BeEW?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAADjlKdMB2keuJuuV9LfHcFuuyzGdPVKbna8 ]

⚡ Challenges Faced:
🔹 Setting up correct bucket policies
🔹 Configuring CloudFront caching & invalidations

🔹 Handling HTTPS & security settings

🚀 Key Learnings:
💡 S3 & CloudFront make static website hosting super fast & scalable!
💡 Caching strategies can significantly improve load time.

💡 IAM roles & permissions are critical for security.

👇 Let’s Discuss!
Have you deployed a static website using AWS S3? Let’s discuss in the comments! 🚀

AWS #S3 #CloudFront #DevOps #CloudComputing #WebHosting #LearningJourney

"My Journey into DevOps: Learning, Building, and Growing 🚀"

Sakshi More — Wed, 05 Mar 2025 18:54:44 +0000

     👋 Hello, Dev Community! I'm Sakshi More 🚀

Hey everyone! I'm Sakshi More, a Python Developer transitioning into DevOps. My goal? Become a DevOps Engineer! 💪

💡 What I'm Learning:
✅ AWS (EC2, IAM, CodePipeline)
✅ Linux & Shell Scripting
✅ CI/CD with GitHub Actions & AWS CodePipeline
✅ Docker & Kubernetes (Coming soon!)

I'll be sharing my learnings, projects, and challenges as I move from Cloud to DevOps. Excited to connect and grow with this amazing community! 🙌

🚀 Let’s build, automate, and deploy together! Drop a comment if you're on a similar journey!

DevOps #AWS #CloudComputing #CI/CD #Linux #Python

DEV Community: Sakshi More

Day 3 — Linux Permissions for DevOps (AWS EC2) #40 days

What I Learned Today

Why Permissions Matter in DevOps

What I Understood

Day 2 — Beginning My 40 Days AWS DevOps Journey

DAY1 AWS DevOps -beginner

Day 1 — Beginning My 40 Days AWS DevOps Journey

Sakshi More ・ Dec 10

Day 1 — Beginning My 40 Days AWS DevOps Journey

Linux + AWS Basic Commands (Beginner Notes)

1. Navigation Commands

2. File/Folder Commands

3. Viewing Commands

4. Searching Commands

5. Networking Commands

40 Days AWS + DevOps Challenge (Beginner Job Ready)

Mastering the 3-Tier Web Architecture: A Dev's Guide

AWS Networking Services and Use-Cases

Hosting a Static Website with AWS S3 & CloudFront – A Quick Demo!

🚀 Hosting a Static Website with AWS S3 & CloudFront – A Quick Demo!

🎯 What’s Covered in the Video?

AWS #S3 #CloudFront #DevOps #CloudComputing #WebHosting #LearningJourney

"My Journey into DevOps: Learning, Building, and Growing 🚀"

DevOps #AWS #CloudComputing #CI/CD #Linux #Python