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MHMuhammad Hassaan Javedblog.infraforge.agencyAug 13 · 11 min read

How we recovered a k3s cluster after its client certs expired

119 ephemeral preview namespaces should have been reaped between 2am and 6am. None were. The teardown cron had been failing on x509: certificate has expired or not yet valid for six hours before anyon

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VPVishukumar Pateldevopsbyvishu.hashnode.devJan 29 · 18 min read

How DevOps Engineers Can Build a Cloud Network Using AWS VPC

Overview Amazon Virtual Private Cloud (VPC) is your private, isolated section of the AWS cloud where you launch and manage your AWS resources. Think of it as your own data centre in the cloud, but with the flexibility and scalability of AWS. A VPC is...

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RSRitesh Singhritesh-devops.hashnode.devAug 17, 2025 · 3 min read

📘 Day 43: DNS, DHCP, NAT & Firewall Basics

Welcome to Day 43 of my Networking & Security journey! 🚀 Today, I explored four core networking concepts that power the internet and practiced firewall configuration hands-on. 🌍 1. DNS (Domain Name System) Definition: DNS translates human-readabl...

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HSHarsh Shahharsh-devopss.hashnode.devAug 13, 2025 · 6 min read

🌐 DevOps Networking Basics

Networking can feel intimidating at first 😰 — IPs, ports, protocols... it’s a lot! But if you're diving into DevOps, understanding networking fundamentals is super important for working with cloud, containers, CI/CD, and microservices. 1. What Is a ...

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SSachinsachin72tech.devMar 17, 2025 · 6 min read

Project 1: AWS VPC & VPC Peering Project. 💻💡

Introduction Amazon virtual Private Cloud (VPC) allow you to create an isolated network environment within AWS. VPC Peering enables communication between two VPC’s using private IP addresses. This project will guide you through setting up a secure VP...

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VKVijay Kumar Singhblogs.vijaysingh.cloudFeb 17, 2024 · 3 min read

1.6 Deep Dive into Ethernet and MAC Addresses

Introduction Understanding the fundamentals of computer networking can often seem like deciphering a foreign language. However, at the heart of these complex systems lie a few critical components that enable seamless communication between millions of...

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VKVijay Kumar Singhblogs.vijaysingh.cloudFeb 14, 2024 · 2 min read

1.3 The Netwok Kingdom: Client & Server

Once upon a time, in a world where technology ruled, existed two kinds of entities, the Servers and the Clients. Both were integral components of the Network Kingdom, enabling communication and transferring data. Servers, the grand libraries of infor...

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VKVijay Kumar Singhblogs.vijaysingh.cloudFeb 12, 2024 · 2 min read

1.1 Networking: A Brief Introduction and History

Networking, in the context of computing, involves the practice of connecting computers and other devices together to share resources and communicate with each other. It's a concept that has revolutionized the way we live, work, and interact with each...

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#cloudnetworking

Explore Hashnode

How we recovered a k3s cluster after its client certs expired

How DevOps Engineers Can Build a Cloud Network Using AWS VPC

📘 Day 43: DNS, DHCP, NAT & Firewall Basics

🌐 DevOps Networking Basics

Project 1: AWS VPC & VPC Peering Project. 💻💡

1.6 Deep Dive into Ethernet and MAC Addresses

1.3 The Netwok Kingdom: Client & Server

1.1 Networking: A Brief Introduction and History

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