Let’s dig into the containerization concepts. The common and widely accepted tools and technologies, and what are their advantages over traditional VMware. I will try to give some good insights into virtualization and VMware. Please give a follow and subscribe if you are interested in such posts! …

In this post, we’ll walk through what a Dockerfile is and how to create one following leading industry security best practices including but not limited to multi-stage builds, creating minimal images, use of appropriate instructions to minimize number of layers, linting, what to avoid, and more. …

Magawa, a Gambian pouched rat capable of detecting unexploded land mines, has discovered many land mines and other items of ordnance left over from the Cambodian Civil War. The rat was awarded the PDSA Gold Medal in Sep 2020, an animal bravery award that acknowledges the bravery and devotion to…

A good API architecture is important in effectively handling the communication between microservices. Don't be afraid to create new microservices, and try to decouple functionality as much as possible. e.g, instead of creating one notification service try to create separate microservices for email notification, SMS notification, and mobile push notifications. …

As part of this blog, we are going to understand how we can leverage Docker with VSCode Remote Container to provide a sophisticated development environment tailored to the use for specific software development. As the development landscape is changing, so are the tools for…

Learn How-To enhance your Docker Swarm with four important services that you will love. — In my last article, I showed how a Docker Swarm is set up in ~15 minutes. Remember: Whenever you read “Docker Swarm” we are talking about “Docker Swarm mode” Within this article, I will show and explain four services everyone should use in their Docker Swarm: traefik, Portainer, Docker-Registry, FTP. Traefik

Deploy a Docker Registry using TLS (key/certificate) and htpasswd (authentication) — We’ll start with creating a directory in which we’ll store our configuration and certificates. # Create a directory and access it $ mkdir registry && cd "$_" In this directory, we’ll create two subdirectories: one for our TLS configuration and one for our htpasswd configuration. # Create subdirectories $ mkdir certs $…

As a developer you probably will running many apps on one machine, but as times goes on you will kinda hard to maintain apps because maybe some of them has same port which will make a conflict. For example here’s some apps & ports mapped to one domain. | Application…

Docker is a very popular and powerful open-source containerization platform that is used for building, deploying, and running applications. If you want to be a DevOps & Cloud engineer, here is the spot to practice for the interview. I’ve been preparing for many interviews lately, and here are the top…

A Brief Introduction to Containers Containerization is a packaging and virtualization mechanism for an application. It contains the application code along with the dependencies that are required to run this application. They are more lightweight, and easy to launch, scale, and replace compared to virtual machines. …

Continuing the previous post, we learned about the two main components of building Containers are Linux Namespaces and Cgroups. In this post, we are going to learn what is Container Runtime and how does it work with Container? This is part two in the series Deep into Container: Linux namespaces…

One of the diagrams that is automatically generated when you connect your AWS account to Hava is the AWS Container View. If you have container workloads running on AWS, you will get a diagram created like this :

Introduction There are a lot of Dockerfile samples on web and developers tend to use those example directly for building applications into containers during development stage. However, the fact is those Dockerfile samples are far from production-ready, which may induce reliablity and security issues if containers created with such Dockerfile are…

Welcome Back! In a previous article I built out this repo. The repo contains the source code for a simple Express server that returns <h2>Hi There!!!</h2> code. We're going to use the ending result here as our starter code for this project. …

From a whopping 1.1GB to just 40MB! — Lately, I’ve been working on a side project that I hope to turn into a start-up soon. Since I wanted to make it easy to deploy, I delegated generating the types, building the binary, and running the server to a Dockerfile. My initial Approach Naively, I was using a go docker image as…

Kubernetes is undoubtedly a champion in the container orchestration world. But currently, we see K3s or a lightweight Kubernetes distribution which is light, efficient and fast with a dramatically small footprint levelling up. Businesses nowadays scratch their heads on whether to use K3s or K8s in their production. Let’s discuss…

Installing application dependencies in Docker build takes long? CI/CD limits effectivity of Docker caching? Using a private repo? … Have you heard about the new BuildKit caching features? — One of the most important things for my productivity as a developer is the speed of the make changes — build — test loop. It currently involves building several Docker images with Python inside. As it turns out, making Docker builds with Python fast is not that simple and there…

Use Official Docker Images as Base Image Try to use Official Docker Images as Base Image, this will made your Dockerfile cleaner and let you use a verified image and already built with best practices. Use Specific Docker Image Versions “ From node ” it will use the latest tag “ From node:latest ” and this is very bad !!!, you might…

In order to deploy our application, we can use the actual physical machines but the problem with that one application can interfere with another one’s and can cause downtime, resource starvation, security issues for another microservice running on the same machine. In order to overcome this problem, we can create…

Making way for a cluster that is less error-prone… — Wow, what a grueling week. Since my last article, which talked about my girlfriend feeling guilty about leaving her old job for a new one, I have been busy battling issues with my Kubernetes cluster. As you may recall, I have a cluster (using Kubeadm) running on one primary and…