Creating and Managing Virtual Machine Images and Scale Sets in Azure: A Step-by-Step Guide
Introduction Azure makes it easy to standardize, replicate, and scale your virtual machines by combining the Azure Compute Gallery with Virtual Mach…
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I compile C to a 468-byte ROM that runs identically on x86 and ARM
I run a mesh of agents on old phones. They check invariants — is a watchdog's lease longer than twice its producer's cadence? Is the battery in its…
Docker -Networking and Best Practices
Docker Networking Containers are assigned an IP address when they are created. To check the IP address, we can use the following command: docker ins…
Docker – ARG Directive, .dockerignore, and Docker Volumes
ARG Directive The ARG directive acts like a variable. We can define it inside the Dockerfile and change its value during the image build process. AR…
Docker – Port Mapping, Logs, Container Management, and Image Removal
Docker – Logs, Remove, and Port Mapping Port Mapping When we run an application inside a container, we define the port on which the application will…
Docker – Image and Container Bonding & Client-Server Architecture
Question: A container is running from an image. If we try to delete the image while the container is running, why can't we delete the image? Answer:…
Teleporting Virtual Machines: Flipping the Script
In the previous post in this series, Teleporting Servers , we examined how to move a live virtual machine between physical hosts using the pre-copy…
You Might Not Need Docker: The Case for Lightweight, Headless VMs
Lately, whenever I need to run a quick experiment or spin up a localized environment with multiple moving pieces, I've completely stopped using Dock…
What is Virtualization? The Technology Behind the Cloud
By Sailee Shingare | M.S. in Computer Science, Northern Illinois University (NIU) In my last post, I said the cloud is essentially “someone else’s c…
How to Deploy a Virtual Machine in Azure
A virtual machine is a mini computer inside another computer in the cloud. Now we are deploying this virtual machine in an operating system called L…
Virtual Machines, Virtual Environments and Containers: Understanding the Differences
INTRODUCTION When working in software development or data engineering, you will often hear terms like virtual machines, virtual environments and con…
Build Your Own Lab: Virtualization for DevOps Beginners
What We'll cover? Setting up your lab (laptop vs cloud) Virtual Box Deploying VMs Setting Up a Lab on Your Laptop There are two main options for pra…
Folders, Apartments, and Fake Computers: A Guide to Virtual Environments, Docker, and VMs
Introduction If you have been spending a substantial amount of time writing code, you must have run into a frustrating problem: "It works on my comp…
Run a Full Linux Desktop on Windows Without Dual-Booting (WSL2 Guide)
For years I thought my only options were dual booting or using a clunky virtual machine. Dual boot meant constant reboots, and VirtualBox ate my RAM…