[FreeNX-kNX] Is there a loadbalancing HOWTO?

[Chris Fanning]

Hi,

On Thu, Oct 16, 2008 at 10:36 PM, jhonyl <jhonyl at netscape.net> wrote:
> Hi,
>
>  Is there a load balancing HOWTO document for freenx?
>
> I am interested to know technically how it works, are the servers
> identically configured? or do they share their file system?

As you say, I guess it's important that both the hosts have an
identical configuration. Applications and  versions, etc. To acheive
this I've installed the desktop operating system in a chroot
environment on a nfs server. The desktop servers boot via pxe, tftp,
and live-initramfs mounts the filesystem combining nfs(ro) and
RAM(rw). This is the same idea as a live-cd (cd +ram), or thinclients.
The servers don't have harddrives.

Then I use another server that only runs the freenx server that acts
as the frontier and balances new  incomming connections between the
two nodes.

nxserver, nfs_operating_system_server(+ dhcpd and tftp),
nfs_home_server, CUPS, and LDAP are all running as virtual machines on
xen.
It's been in production for 2 months with 20 users. I'm having
problems now with /tmp/.X-lock files. But apart from that it seems to
be goiing ok.


>
> I would like to have high availability, in case that my (single) server
> brakes.
>

Now, in my case, I'm worried about the xen server breaking.
Look in the list for a mail about a year ago. Dimitir explained how he
had developed a high availbility installation with DRBD.

Cheers.
Chris.


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