HowtoMatrix

The following will install and configure DRBD, OpenAIS, Pacemaker and Xen
on OpenSUSE 11.1 to provide highly-available virtual machines. This setup does
not utilize Xen’s live migration capabilities. Instead, VMs will be started
on the secondary node as soon as failure of the primary is detected. Xen
virtual disk images are replicated between nodes using DRBD and all services
on [...]

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Openfiler is a high performance operating system tailored for use
as a SAN/NAS appliance. This configuration will enable two Openfiler
appliances to work in an Active/Passive high availability scenario.
Read more at HowtoForge

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In this howto we will build a load-balanced and high-availability
web cluster on 2 real servers with Xen, hearbeat and ldirectord. The
cluster will do http, mail, DNS, MySQL database and will be completely
monitored. This is currently used on a production server with a couple
of websites. The goal of this tutorial is to achieve load balancing & [...]

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