PUBLIC MARKS from holyver with tag nfs

Network File System (NFS) has been part of the world of free operating systems and proprietary UNIX flavors since the mid-1980s. But not all administrators know how it works or why there have been new releases. It is important to know about NFS simply because the system is vital seamless access across UNIX networks. Learn how the latest release of NFS, NFSv4, has addressed many criticisms, particularly with regard to security problems, that became apparent in versions 2 and 3.

NFS signifie Network File System. C'est, comme son nom l'indique, un système de fichiers en réseau qui permet de partager ses données principalement entre systèmes UNIX. À la différence de SAMBA, NFS gère les permissions sur les fichiers et on peut donc l'utiliser de manière totalement transparente dans son arborescence Linux.

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.