[GE users] question about shadow master configuration

Sean Dilda agrajag at dragaera.net
Tue Nov 23 15:12:17 GMT 2004


On Tue, 2004-11-23 at 00:20, Ron Chen wrote:
> There are 2 main purposes of using a shared filesystem
> with shadow master failover:
> 
> - lock file: the master needs to update the heartbeat 
>   periodically so that the shadows would know that it 
>   is still alive.
> 
> - when one of the shadows starts a new master, the new
> 
>   master needs to get the cluster information (queue
>   definitions, user configurations), and also the job
>   information from the files in the spool dir.

There is also the $SGE_ROOT/$SGE_CELL/common/act_qmaster file which gets
overwritten whenever sge_qmaster starts.  This file tells all the
clients (sge_execd, qsub, qstat, etc) which machine to find sge_qmaster
on.


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