Introduction In this article, we will see together different basic concepts about Software Testing. There are different goals around it. The first one is obviously to search for defects than can be fixed to improve software quality. Then to validate that the software meets its purpose and finally facilitate refactoring and upgrades by validating that everything is still working after. As seen …
Introduction In this lecture, we will discuss Jenkin, a free and open source automation server which helps automate the parts of software development related to building, testing, and deploying, facilitating continuous integration and continuous delivery. It is free and entirely written in Java. This product is a widely used application around the world that has around 300k installations and growing day by day. Finally, it is …
Puppet Components In the previous article we have seen Puppet basic. Now let’s discuss about Puppet Components : Puppet Commands Here are some useful Puppet commands in order to run our following example : # Display puppet help man page $ puppet help |more # Find a resource $ puppet resource –types | grep -i …
Introduction Puppet is one of the oldest IT automation tool based on Ruby. It’s used to configure, manage, deploy and orchestrate various applications accross your infrastructure. Puppet comes with multiple built-in resources types (Puppet resources), that can perform almost any IT-driven automation task. There are two deployment model : Puppet supports various OS like RedHat, …
Create a repository From scratch From existing repo Observe my repository Files changes in working dir Changes made to track files History of changes Show a commit All local branches Update Pull latest changes (fetch + merge) Fetch latest changes (does not merge) Publish Stages file Commit all local changes Push changes to origin Revert …
Introduction – What is GIT ? Git is a free and open source version control system. Unlike older centralized version control systems such as SVN and CVS, Git is distributed : every developer has the full history of their code repository locally. Git also has excellent support for branching, merging, and rewriting repository history, which has …
Introduction DevOps engineers must be comfortable with Linux but also with softwares and programming languages like Python, NodeJS and Java. It’s important to understand how applications are built, deployed and how to troubleshoot, in order to be able to setup CI/CD. In this article, we will see together 3 of the most used programming languages used. Java …
Introduction Let’s start a new serie of articles on DevOps ! Before talking about methods, good practices, automation, CI/CD, pipelines or DevOPS tools, we will begin by defining what is DevOps. What is Development ? In the software industry, development is referred to as a process by which software is created using procedures or programming …
Introduction In this article, we will see an overview of Docker Swarm and it’s concepts. Running you containers on a single host is probably good for testing and development, but in a production environment, this may not be a good idea to have a single point of failure. With Docker Swarm, you can combine multiple …
What is PEP8 ? We have seen several topics on Python in my previous articles (here). Today, we will discuss about PEP8 convention. 🙂 PEP8 is coding conventions for the Python code comprising the standard library in the main Python distribution. It exists to improve the readability of Python code. As you know, we spend more time …