What is Helm ? Helm is a package manager for Kubernetes. It makes it easy to create and deploy applications or services which are highly repeatables into a Kubernetes Cluster. Helm uses “charts” which are a group of files that describe a related set of Kubernetes resources (pods, services, configmaps etc.) Helm is made of …
General CLI Commands Install modules, backend and plugins $ terraform init Create Plan & Dry run $ terraform plan $ terraform plan -out plan.out Execute Plan $ terraform apply $ terraform apply -auto-approve Taint resource (mark for recreation) $ terraform taint $ terraform untaint Synchronize state with remote resources $ terraform refresh Import resource $ …
Introduction In the previous article on Terraform, we have seen together what was IaC, how to install Terraform and run a simple test by deploying an EC2 instance. Today, we will discuss about variables, remote state, locking and modules ! Variables In order to make your deployment dynamics, you can use variables in Terraform. For example in …
What is Infrastructure as Code ? As discussed several times in my articles, we all know that we are in an automation era. In order to deploy automatically infrastructure several tools are being used, and each one can be used for different purposes : Today we will see Terraform, a tool for building, changing, and …
What is Packer ? Packer is a great tool developped by Hashicorp. It does not need other tools from Hashicorp to operate and allows you to create images.This can be images used in the cloud or on on-premises infrastructures such a VMWare. In this article we will see together how to create an image on …
Introduction An agent based monitoring tool I really like to use is CheckMK ! It’s is a software developed in Python and C++ for IT Infrastructure monitoring. It is used for the monitoring of servers, applications, networks, cloud infrastructures (public, private, hybrid), containers, storage, databases and environment sensors. It’s easy to use and you has a lot of features. Checkmk components Let’s begin by having our definitions straights : Editions comparison There …
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, …