Introduction This post is the continuation of the series of posts for setup a High available NFS server, check the first post to setup the iSCSI storage part: http://opentodo.net/2015/06/high-available-nfs-server-setup-iscsi-multipath/ On this post I’ll explain how to setup the NFS cluster
High available NFS server: Setup iSCSI & multipath
Introduction On this series of post I’ll explain how to setup a high available and redundant NFS cluster using iSCSI with DM-Multipath and Corosync & Pacemaker to manage the cluster and the resources associated. The objective of this scenario it’s create
Setup Redis Failover with Redis Sentinel
Recently I’ve been playing with redis, to study as an alternative for memcached for one project. One of my main requirements was to implement a good failover solution for a key-value memory database, actually you’ve many ways to do it
Setup iSCSI Target & Initiator on CentOS 6
iSCSI is a network protocol defined to allow scsi commands over TCP/IP stack, allowing to hosts I/O block operations like a device storage attached locally. With iSCSI we’ve to difference to basic concepts: iSCSI initiator: is called the scsi client,
Create local ISO library in Xen Server
Normally in XenServer the ISO library is configured in a remotely server and shared with NFS or CIFS, but for some reasons sometimes is needed to use a local storage in the same server to use it as ISO repository
Manage LVM snapshots
LVM allow create snapshots of our system of an easy and fast way. A snapshot consist in a copy of the state at a particular point in time. When we create a snapshot, initially only contains a hard links of
Basic guide to manage LVM
With LVM we can manage our partition of a easy and flexible way. For this guide I’ll use three disk of 340 GB, 90 GB and 160 GB. With this basic guide We’ll create a simple group, add or remove
Managing RAID in Linux
In this article I’ll show the various raid levels of a practice way and the basic manage to add or remove disks to our raid device. First of all we have to partition our hard disk with the type of