Anshul Saini’s Post

Your EC2 instance is running… but can you actually enter it? Connecting to an EC2 Instance using SSH Continuing my AWS DevOps learning series After creating an EC2 instance, the very next question students usually ask me is: “How do we actually enter the EC2 machine?” This is where SSH (Secure Shell) comes in. In simple words, SSH allows us to securely connect to our EC2 instance and work on it just like a remote computer. # Basic steps to connect to EC2 using SSH: 1. Make sure your key pair (.pem file) is safe 2. Check that port 22 is allowed in the Security Group 3. Use the correct username (ec2-user / ubuntu) 4. Connect using the terminal or command prompt Once connected, you’ll see that you’re now inside the EC2 machine, ready to run commands, install software, and explore AWS practically. I always tell my students — don’t rush this step. Understanding SSH properly makes everything else in DevOps much easier. In the next post, I’ll explain common SSH errors beginners face and how to fix them. If you’re learning AWS step by step, feel free to follow this series and practice along #AWS #DevOps #EC2 #SSH #CloudComputing #LearningInPublic #BeginnerFriendly

☁️ Getting AWS Architecture Right from Day One - When learning AWS, it’s easy to jump straight into EC2 and services but strong architecture starts with fundamentals. Here’s a clean breakdown of the core concepts every cloud engineer should understand early! 🔹 Cloud Service Models 1. IaaS → You manage OS & apps (EC2, Compute Engine) 2. PaaS → Platform managed for you (Azure App Service, Firebase) 2. SaaS → Fully managed software (Gmail, Google Docs, Zoom) 🔹 Core AWS Building Blocks - EC2 → Virtual servers - AMI → Machine images (Linux, Windows, Red Hat) - ELB → Load balancing traffic - Auto Scaling → Match capacity to demand 🔹 Security Best Practices (Non-Negotiable) - Always use HTTPS, never plain HTTP - Enable encryption at rest - Use IAM roles, users, and policies correctly - Patch systems regularly - Enable MFA to protect the account 🔹 Networking & Account Hygiene - Every region has a default VPC (isolated & private) - Set up AWS Budgets with alerts (ex: 80%) - Never give users full admin access - Use IAM users + groups instead of root 🔹 Storage Choices - EBS → Block storage for EC2 - S3 → Object storage - Glacier → Low-cost archival data ⭐ Takeaway: - Cloud isn’t just about spinning up resources it’s about security, cost control, and architecture decisions made early that save you later. Building these habits from the start makes everything else easier. #AWS #CloudComputing #DevOps

Day 29 & 30 of the 100 Days of Cloud & DevOps Challenge (KodeKloud) Still going strong. These two days were all about deep networking fundamentals in AWS — the kind of stuff that actually matters in real infra. What I practiced: ¶ AWS Networking (Hands-on) - VPC Peering between public and private VPCs - Configured route tables for cross-VPC communication - Validated connectivity using ICMP (ping) - Debugged security groups & routing issues ¶ NAT Instance (Cost-Optimized Internet Access) - Designed outbound internet access for a private EC2 - Created a public subnet for NAT instance - Launched & configured NAT Instance (Amazon Linux 2) - Disabled source/destination check - Enabled IP forwarding & iptables masquerading - Routed private subnet traffic via NAT instance - Verified access by uploading files from private EC2 to S3 Key takeaways: - Networking issues are 90% routing + security groups - NAT Instance is cheaper but needs manual love - VPC Peering ≠ Internet access (important mental model) Slow progress > no progress. Learning by breaking things > tutorials. #100DaysOfCloud #KodeKloud #AWS #DevOps #CloudComputing #VPC #NAT #LearningInPublic

🚀 Understanding Virtualization: OS-Level vs Hardware-Level Virtualization is a core concept in DevOps & Cloud Computing. There are two common types: 🔹 OS-Level Virtualization (Container-based) • Uses the same operating system kernel • Very lightweight and fast • Examples: Docker, Kubernetes containers • Best for microservices and modern applications 🔹 Hardware-Level Virtualization (VM-based) • Each virtual machine has its own OS • More secure and isolated • Examples: VMware, VirtualBox, Hyper-V • Best for running different operating systems on one machine 📌 Quick Difference • OS-level → Faster, less resource usage • Hardware-level → Strong isolation, more resources 💡 Both are important and widely used in today’s IT world. #DevOps #Virtualization #Containers #Docker #VMware #CloudComputing #Learning

🚀 From now on we go to AWS — The Next Step in Our Cloud Journey After building a strong foundation with Linux fundamentals, we’re now moving forward into AWS. We intentionally didn’t deep-dive into every corner of Linux because, in Cloud and DevOps roles, Linux is the base layer—the system that everything else runs on. Understanding users, permissions, processes, memory, networking, and scheduling is what truly prepares you for real-world cloud environments. That foundation is now paying off. As we step into AWS, concepts like EC2, VPCs, security groups, auto scaling, containers, and monitoring feel far more intuitive because they directly map to how Linux behaves under the hood. Troubleshooting cloud issues becomes easier when you can trace problems back to core Linux concepts—whether it’s a permission issue, a networking misconfiguration, or a resource constraint. This transition marks a shift from operating systems to cloud architecture, from managing single servers to designing scalable, resilient systems. Linux gave us clarity. AWS gives us scale. DevOps brings it all together. Onward to building, automating, and deploying in the cloud. ☁️⚙️ #Linux #AWS #DevOps #CloudComputing #LearningJourney #CloudFoundation #LinuxBasics #SysAdmin #Kubernetes #CareerGrowth

Deployed. Secure. Live. ☁️♾️ Successfully pushed the new backend services to AWS. While local environments are great for rapid iteration, the real challenge lies in configuring a resilient cloud infrastructure. I focused on establishing a robust deployment pipeline on AWS EC2, ensuring the application remains persistent and secure. Key implementations: Access Control: Replaced default security settings with Detailed Security Groups and dedicated SSH key management. Uptime: Implemented background process management (nohup) to decouple the application lifecycle from the shell session. Connectivity: Mapped Elastic IPs and configured DNS records (GoDaddy 🌐 ) for reliable public access. The API is now returning healthy status checks and is fully operational. A productive day of infrastructure hardening. #AWS #DevOps #CloudComputing #CloudEngineer #Linux #Backend #Python #Infrastructure #SystemDesign #Tech #Engineering #BuildInPublic #DevOpsCommunity

🚀 No Portal? No Problem - Deploying Azure VMs with the CLI Cloud platforms often encourage reliance on portals and clicks, but what do you do when the UI is unavailable? In this blog, I detail how I provisioned an Azure Virtual Machine using only the Azure CLI, addressing real-world constraints such as VM size, OS, and strict storage policies in a single command. This experience highlighted the advantages of using the command line in DevOps: - Faster and repeatable infrastructure - Fewer mistakes compared to manual clicking - Commands that serve as documentation - Automation-ready from day one For those transitioning from full-stack development into cloud and DevOps, this serves as a practical example of the importance of CLI-first thinking. 📖 Read the full blog here: https://lnkd.in/grR_FNcr #Azure #DevOps #CloudComputing #AzureCLI #InfrastructureAsCode #Linux #VirtualMachines #LearningInPublic

Strategic Collaboration Elevated: AWS and SUSE Announce Co-Innovation to Power the AI-Ready Cloud The foundation of enterprise innovation on Amazon Web Services (AWS) is getting stronger. We are excited to announce a major expansion of our 15-year relationship with SUSE that directly tackles cloud security, modernization, and the complexity of Generative AI. This deeply integrated partnership is a triple win for our customers: 🛡️ Secure Migration with SPAL: We’re working with SUSE to deliver the new Supplementary Packages for Amazon Linux (SPAL). This provides thousands of enterprise-vetted, secure packages for AL2023, unlocking faster migration and guaranteeing a trusted open source supply chain. 🤖 AI-Powered EKS Management: Introducing SUSE Rancher for AWS on #awsmarketplace, a fully managed SaaS control plane for Amazon EKS. It’s co-engineered to simplify multi-cluster operations and features a built-in AI Assistant powered by Amazon Q and Amazon Bedrock. 🤝 Foundation of Trust: This strategic collaboration ensures our customers leverage the best of SUSE's Linux and Kubernetes expertise, built natively into the AWS platform for enhanced security and accelerated time-to-value. By combining the power of the AWS Partners with our core cloud services, we are simplifying complexity so you can focus on building the next wave of cloud native and AI innovation. Learn more about the future we're building together: https://lnkd.in/gVuyBGpi #AWSPartners #AWSMarketplace #GenAI #CloudNative #SUSE #AmazonLinux #EKS Thanks for the partnership Dirk-Peter van Leeuwen Christine Puccio, Jason Vaughn Ton Musters Rachel Cassidy Lee Taylor Manish Patil Katy Fant, MCP Anuj Kumar Mike Pallot Frank Feldmann

Proud to see Amazon Web Services (AWS) and SUSE take this strategic collaboration to the next level. This isn’t just about new products — it’s about reducing real enterprise friction: securing Linux migrations with SPAL, simplifying Kubernetes operations with a managed Rancher control plane on AWS, and embedding AI assistance directly into cloud operations via Amazon Bedrock and Amazon Q. Together, AWS and SUSE are setting a stronger foundation for AI-ready, cloud-native enterprises to move faster with confidence.

According to Mordor Intelligence, Asia-Pacific is the fastest growing market for Kubernetes, with a 22.6% CAGR forecast for 2026-2031. Thousands of enterprises here use Amazon EKS extensively. As the number of clusters expand, complexity grows exponentially. This makes SUSE Rancher for AWS ("AI Powered EKS management"), a new offering from Amazon Web Services (AWS) and SUSE very relevant in this region.