RE: [Xen-users] Automatic Loadbalancing via migration --live

["Brent Meshier" <brent@xxxxxxxxxxxxxxx>]

Nagios is an interesting idea, and since it only takes a single command line to migrate a domU, I guess it would work well.  My thoughts are load balancing Xen go beyond moving a high load domU to a load load dom0.  A couple factors to consider are how long a domU sustains high CPU usage before it warrants moving and historical CPU usage of the potential dom0 target.  You don’t want your cluster bouncing domU’s around every minute trying to achieve a perfect balance.

 

--Brent

 

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Ofek Doron [Penguin IT]
Sent: Friday, June 01, 2007 7:44 PM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Automatic Loadbalancing via migration --live

 

 

You can use nagios (or something like) to monitor Dom0 and DomU. when you have a performance (or failure)  issue you can move the DomU to other Dom0 (use the external commands in the nagios server).

(if it will be in a mission critical env - you may need an High Availability service for the nagios)

 

It is not just for load balancing, you can use it for High Availability  of VM's, DRP, BCP etc.

 

We tested a few configuration in our lab in the last week , looks good.

 

- doron

 

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