PUBLIC MARKS from holyver with tags tutorial & "load balancing"

Lors de la mise en production d'une application Internet ou intranet, il est fréquent de vouloir protéger les transferts par une connexion sécurisée (HTTPS). Même si Tomcat le permet (il suffit d'activer une option dans le server.xml de Tomcat), utiliser Apache est un meilleur choix du fait de sa vitesse. De plus l'utilisation d'Apache permet de se débarrasser des :8080 et autres numéros de ports dans l'url, du fameux " /MonApp " à la fin de la dite url et enfin la possibilité il offre une intégration plus aisée dans un environnement avec charge répartie (Load Balancing).

This tutorial shows how to configure a MySQL 5 cluster with three nodes: two storage nodes and one management node. This cluster is load-balanced by a high-availability load balancer that in fact has two nodes that use the Ultra Monkey package which provides heartbeat (for checking if the other node is still alive) and ldirectord (to split up the requests to the nodes of the MySQL cluster).

In this tutorial I will describe how to set up a highly available NFS server that can be used as storage solution for other high-availability services like, for example, a cluster of web servers that are being loadbalanced. If you have a web server cluster with two or more nodes that serve the same web site(s), than these nodes must access the same pool of data so that every node serves the same data, no matter if the loadbalancer directs the user to node 1 or node n. This can be achieved with an NFS share on an NFS server that all web server nodes (the NFS clients) can access.