Re: Clusterwide pids

["J . A . Magallon" <jamagallon@able.es>]

On 20010713 Jordi Polo wrote:
>> conclussion. Which is the problem with booting like
>>
>> linux nodeid=47
>>
>> and let the cluster admin be sure there is no duplicate id ?
>> Then node just boots and joins the cluster in user-space.
>
>The problem comes when you just want to connect your laptop to the 
>cluster and you have no idea about what node numbers are being used.  
>You want also that your machines already started join the cluster.
>

Well, what is a cluster ? Why would you need to plug a laptop on a cluster ?
What is the problem with rebooting to change a node id ?
I suppose you want to run a cluster because you have a HA application or a HP one
that needs days-weeks-months to complete. You see a cluster like a net,
and I see it more like a crossbar to plug CPUs. You do not play plugging
and unpluging your pentiums on a 2 way box.

>Your way surely works but what about machines that select a unique node id 
>automagically?

What for ?

>If we want something like that the best moment to begin 
>developing it is now, later it will be much harder make a more flexible 
>aproximation than a boot option.
>


-- 
J.A. Magallon                           #  Let the source be with you...        
mailto:jamagallon@able.es
Mandrake Linux release 8.1 (Cooker) for i586
Linux werewolf 2.4.6-ac2 #1 SMP Sun Jul 8 23:57:11 CEST 2001 i686

Linux-cluster: generic cluster infrastructure for Linux
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