Re: [Ltsp-developer] HA/loadbalancing login-servers?

[Volker T. <vol...@di...>]

Greetings!

On Tue, 16 Sep 2003 11:41:14 +0800 Craig Ringer
<cr...@po...> wrote:
> 
> Normally an 'indirect' request brings up a gui chooser maintained by
> the display manager contacted, allowing the user to pick a server
> based on name, load, etc... but I wouldn't be surprised if you could
> cut that step out and immediately contact a login server picked by the
> initial XDMCP server contacted.

Thanks, good idea. I want to have an automatic selection as the intended
users are comparatively... hm... let's say just office computer users. 

I'll dig into that. At first glance I could adapt a chooser according to
the needs. I'll report back.


> As for the work involved - it may involve modifying [xgk]dm, or may be
> as simple as telling the display manager to run an alternative client 
> for indirect requests, one that knows what to do.

See above - usually you can tell them simply tell to use a different
chooser. Which I will provide then.


> I'm pretty sure you can get the server load average over XDMCP, so
> that might be one possible measure to use when deciding what hosts to
> send clients to.

Seems so.


> In summary, what I'm suggesting is the use of a single server (with 
> failover) to handle the initial indirect XDMCP requests from clients. 
> Those clients will be sent the real host to connect to, and will make 
> another XDMCP request to the given host - not talking to the initial 
> server again until X is restarted on the client, usually at logout.
> The initial server can then keep track of which servers are currently 
> accessable, and which have lower load, then direct clients
> appropriately.

Good idea. I'll play with that.

Thanks

Volker Tanger

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