DevOps – Page 2 – The DevOps Runner

DevOps Series : Chef Overview

Leave a Comment / Configuration Management, DevOps / By lionel

Introduction Just as Puppet, Chef is an automation tool. It can save you time by automating your daily repetetive tasks. In this article I won’t explain in details again terms like imperative and declarative models or idempotency seen together in Puppet articles. But as a quick reminder, declarative languages like Chef contrast with imperative languages which specify explicit manipulation of the computer’s internal state; or procedural languages which specify an explicit sequence of steps to follow. Chef is a …

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How to speed up Ansible playbooks drastically ?

Leave a Comment / Configuration Management, DevOps / By lionel

Originally posted on : Sokube Blog Introduction Ansible is a well known open source automation engine which can automate, provision, handle configuration management and orchestration. As it doesn’t need an agent by using SSH protocol, and because you don’t need to write code using simple modules, Ansible eases the deployment and management of your applications ! Before discussing …

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Kubernetes Series : Operators

Leave a Comment / Containers, DevOps / By lionel

Introduction As you already know, Kubernetes is a great and popular container orchestrator. You can use its features to deploy your applications and it will take care of many things like scaling, rollouts and rollbacks or even self-healing as described below. To do so, you will write manifests in YAML format (deployments, services, configmaps etc.) …

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DevOps Series : Helm (2/2)

Leave a Comment / CI / CD, DevOps / By lionel

In my first article on Helm, we have seen together how useful this Kubernetes packaging tool is useful. Today, we will see how to find and use Helm charts and how to create your own templates. Where to find Helm charts ? You can find Helm charts on differents repositories : How to use Helm …

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DevOps Series : Helm (1/2)

Leave a Comment / CI / CD, DevOps / By lionel

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 …

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DevOps Series : Terraform Cheatsheet

Leave a Comment / DevOps, Hashicorp / By lionel

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 $ …

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DevOps Series : Terraform (2/2)

Leave a Comment / DevOps, Hashicorp / By lionel

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 …

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DevOps Series : Terraform (1/2)

Leave a Comment / DevOps, Hashicorp / By lionel

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 …

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DevOps Series : Packer

Leave a Comment / DevOps, Hashicorp / By lionel

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 …

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DevOps Series : CheckMK

Leave a Comment / DevOps, Monitoring / By lionel

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 …

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