Introduction In this article, we will see together 3 famous Open Source solutions used in most common Web Architectures : HAProxy, Corosync and Pacemaker. First, let’s see together the different kind of clusters and then, we will have an overview of the 3 solutions mentioned above. Clustering Architectures High Performance Clusters The first type of cluster …
Linux Series : Load Balancing and High Availability Read More »
VMWare allows you to configure high availability for your virtual machines through vSphere. It means that your VMs will be restarted on alternate hosts if a failure is detected on one of your hosts. How HA Protection works – Master and Subordinate hosts HA protects against scenarios such as : host failures, host isolation and application crashes. …
What is PowerCLI ? PowerCLI is a Windows PowerShell interface for managing VMware vSphere. VMware describes PowerCLI as “a powerful command-line tool that lets you automate all aspects of vSphere management, including network, storage, VM, guest OS and more. PowerCLI is distributed as a Windows PowerShell snapin (PowerCLI 6.0 introduced PowerShell module), and includes over 500 PowerShell cmdlets for managing and automating vSphere and vCloud, …
Introduction Before starting a new articles serie on VMWare, let’s see together how virtualization works. As you probably know, it’s fairly an old technology but it’s still relevant to design a cloud computing solution and it’s important to understand how it works for obvious reasons. What is virtualization ? Virtualization refers to the act of creating a …
Introduction In the last article we have seen together how many features Jelastic Cloud offered. The Market Place is one of them which will allow the customer to quickly deploy several applications : In this article, we will see how to install a WordPress Cluster easily. How to install a WordPress Cluster through the Market Place …
Introduction Jelastic, founded in 2011, is a cloud platform software vendor that provides Multi-Cloud PaaS (Platform as a Service) based on container technology for hosting service providers. In this article, we will take a quick overview of this product and see together the main features availables. What is PaaS ? To begin with, let’s describre …
Introduction A vCloud Director extension called CSE (Container Service Extension) has been released March 2018 in order to manage the life cycle of Kubernetes clusters for tenants. This extension has to be installed on a vCloud Director Instance by the service provider. What can you do with CSE ? It allows your customers to rapidly …
VMWare Series : Kubernetes as a Service on vCloud Director Read More »
What is ITIL ? ITIL, formerly an acronym for Information Technology Infrastructure Library, is a set of detailed practices for IT service management (ITSM) that focuses on aligning IT services with the needs of business. ITIL describes processes, procedures, tasks, and checklists which are not organization-specific nor technology-specific, but can be applied by an organization toward strategy, delivering value, …
Introduction What’s the biggest problem we are all facing when we want to learn something ? Obviously it’s time ! Days are short, especially when you want to maintain a social life, physical activities and improve your knowledge. We probably won’t have the same view about life but we can all agree that we need to have …
What is Docker Compose As seen in my previous article, we can configure docker based LAMP stack using Docker images. Another way to do it is to use Docker Compose. This tool can be used to define and run multi-container applications easily. Indeed, through a YAML file (docker-compose.yml) we will store all the configurational information needed …
Docker Series : Configure a LAMP stack with Docker Compose Read More »