02-15-2013
There is not so much "to do" - of course you can write such a high-availability system yourself. We will talk again a few years from now, probably....
What you have to do is to install such a high-availability software and form a cluster. There are several such software out there: HACMP, Veritas, Beowulf, NonStop-Cluster and probably a few dozen others. As you mentioned you run on Itanium i assume you have HP-Ux as OS, so you will probably need to install NonStop Cluster from HP.
I suggest you read up about "Failover-Clusters" and "active-passive clusters", as this is what you describe.
I hope this helps.
bakunin
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LEARN ABOUT DEBIAN
onecluster
ONECLUSTER(1) onecluster(1) -- manages OpenNebula clusters ONECLUSTER(1)
NAME
onecluster
SYNOPSIS
onecluster command [args] [options]
OPTIONS
-l, --list x,y,z Selects columns to display with list command
-d, --delay x Sets the delay in seconds for top command
-x, --xml Show the resource in xml format
-n, --numeric Do not translate user and group IDs
-v, --verbose Verbose mode
-h, --help Show this message
-V, --version Show version and copyright information
COMMANDS
o create name
Creates a new Cluster
o delete range|clusterid_list
Deletes the given Cluster
o list
Lists Clusters in the pool
valid options: list, delay, xml, numeric
o show clusterid
Shows information for the given Cluster
valid options: xml
o addhost clusterid hostid
Adds a Host to the given Cluster
o delhost clusterid hostid
Deletes a Host from the given Cluster
o adddatastore clusterid datastoreid
Adds a Datastore to the given Cluster
o deldatastore clusterid datastoreid
Deletes a Datastore from the given Cluster
o addvnet clusterid vnetid
Adds a Virtual Network to the given Cluster
o delvnet clusterid vnetid
Deletes a Virtual Network from the given Cluster
ARGUMENT FORMATS
o file
Path to a file
o range
List of id's in the form 1,8..15
o text
String
o clusterid
OpenNebula CLUSTER name or id
o clusterid_list
Comma-separated list of OpenNebula CLUSTER names or ids
o vnetid
OpenNebula VNET name or id
o hostid
OpenNebula HOST name or id
o datastoreid
OpenNebula DATASTORE name or id
LICENSE
OpenNebula 3.4.1 Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org)
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may
obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
April 2012 ONECLUSTER(1)