Communication through ElasticSearch There are 2 important network communication mechanisms in Elasticsearch to understand : The REST APIs of Elasticsearch are exposed over HTTP. The HTTP module binds to localhost by default and the default port is the first available between 9200-9299. Each call that goes from one node to another uses the transport module. …
Recall and Precision Through Elasticsearch we have seen previously that we can send queries in order to get results. There are 3 important principles related to this with Elasticsearch : Basic search examples In this example, we search all documents with the word “morgan” or “freeman” in the field content in the “blogs” index ; …
Introduction In this new series, we will discuss about Elastic Search. This search Engine developed in Java is now very popular. It provides a distributed search engine with an HTTP Interface and schema-free JSON documents. Let’s see the fundamentals together ! Overview Elastic is based on Lucene Library which is a free search engine software …
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 »