Everything DevOps - Cloud Native and DevOps Blog

A Brief History of DevOps and Its Impact on Software Development

A Brief History of DevOps and Its Impact on Software Development

Software development has been and continues to be one of our society's most important building blocks. Software development has gifted us with the mobile phones we use to stay connected, the rockets we send to space and a host of other great innovations. As complex as these innovations become, the

How to Set Up a Linux OS (Ubuntu) on Windows using VirtualBox and Vagrant

How to Set Up a Linux OS (Ubuntu) on Windows using VirtualBox and Vagrant

Ubuntu is a popular Linux distribution that offers users a wide range of features and applications. Ubuntu is a great choice for those new to Linux who want to explore its capabilities. However, it can be difficult to set up and configure on a Windows desktop. Fortunately, there is a

How to restart Kubernetes Pods with kubectl

How to restart Kubernetes Pods with kubectl

Anyone who has used Kubernetes for an extended period of time will know that things don’t always go as smoothly as you’d like. In production, unexpected things happen, and Pods can crash or fail in some unforeseen way. When this happens, you need a reliable way to restart

How to Deploy a Multi Container Docker Compose Application On Amazon EC2

How to Deploy a Multi Container Docker Compose Application On Amazon EC2

Container technology streamlined how you’d build, test, and deploy software from local environments to the cloud or on-premise data centers. But with the benefit of building applications with container technology, there was the problem of manually starting and stopping each container while building multi-container applications. To solve this problem,

How to Set Environment Variables on a Linux Machine

How to Set Environment Variables on a Linux Machine

When building software, you start in a development environment (your local computer). You then move to another environment(s) (Staging, QA, etc.), and finally, the production environment where users can use the application. While moving through each of these environments, there may be some configuration options that will be different.

How to avoid merge commits when syncing a fork

How to avoid merge commits when syncing a fork

Whenever you work on open source projects, you usually maintain your copy (a fork) of the original codebase. To propose changes, you open up a Pull Request (PR). After you create a PR, there are chances that during its review process, commits will be made to the original codebase, which

Building x86 Images on an Apple M1 Chip

Building x86 Images on an Apple M1 Chip

A few months ago, while deploying an application in Amazon Elastic Kubernetes Service (EKS), my pods crashed with a standard_init_linux.go:228: exec user process caused: exec format error error. After a bit of research, I found out that the error tends to happen when the architecture an

Kubernetes Architecture Explained: Worker Nodes in a Cluster

Kubernetes Architecture Explained: Worker Nodes in a Cluster

When you deploy Kubernetes, you get a cluster. And the cluster you get upon deployment would consist of one or more worker machines (virtual or physical) called nodes for you to run your containerized applications in pods. For each worker node to run containerized applications, it must contain a container

How to run Minikube on an Apple M1 chip without Docker Desktop

How to run Minikube on an Apple M1 chip without Docker Desktop

Docker Desktop failed me, and at the time (13th July 2022) of writing this article, Hyperkit, VirtualBox, and other hypervisors specified here don’t work on the Apple M1 chip. Weeks ago, while using Docker Desktop, it suddenly got stuck in a start-stop loop. I spent hours trying to resolve

Persisting Data in Kubernetes with Volumes

Persisting Data in Kubernetes with Volumes

Persisting Data in Kubernetes is complex. And this is because though Pods have readable and writable disk space, the disk space still depends on the Pod’s lifecycle [https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/]. When building applications on Kubernetes, there are use cases where developers would want storage

How do you dockerize a maven project?

Maven is a build automation tool built based on Project Object Model (POM for short). Maven is used for project build, dependency management, and documentation. The pom.xml file of a maven-based project holds all the dependencies, repositories, etc., needed to build and run that project. > Dockerizing is the process

How to create and apply a Git patch file with git diff and git apply commands

An engineer just joined their first company. While debugging an issue, their co-worker shared a patch (also known as diff) file of changes to apply to their local branch of the same Git repository. The engineer could go line by line to retype and apply the changes, but doing so,

How to Schedule Future Processes in Linux Using at

How to Schedule Future Processes in Linux Using at

Assuming you need to perform a task on a specific day sometime in the future. However, you know you will be away from the machine (computer) on that day. How will you perform the task? You can use the at terminal utility program to execute any non-interactive command at a

How to schedule a periodic task with cron

How to schedule a periodic task with cron

cron is a time-based scheduling utility program. With cron, you can launch routine background jobs [https://everythingdevops.dev/linux-background-and-foreground-process-management/] at specific times, days, months, etc., on an ongoing basis. The jobs launched are referred to as cron jobs. The cron utility program is driven by a configuration file called /etc/

Automating Dependency Updates for Docker Projects

Automating Dependency Updates for Docker Projects

This article was originally posted on Divine Odazie's blog [https://blog.divineodazie.com/automating-dependency-updates-for-docker-projects] . A dependency is an external standalone library organized into packages to perform a specific task. Dependency management is the process of identifying, installing, and resolving dependencies in a software project's codebase. If your software has dependencies

Linux background and foreground process management

In Linux-based operating systems, there is support for background and foreground job processing. A job in this context is just a command launched from a terminal window. Any running command is a process. This tutorial will show you how to manage jobs in the foreground and background of your Linux