Re: [Condor-users] Multiple masters on one machine

[Christian Rosenbleck <christian.rosenbleck@xxxxxxxxxxxxxxxxxxxxx>]

On 09/30/2004 04:37 PM, Alain Roy wrote:
> > It seems it is not possible to start more than one condor_master 
> > process, though it should be possible to define directories etc. for 
> > more than one master.
>
> It is certainly possible. You need to have a unique configuration file 
> for each one. The easiest way to make this work is to define 
> CONDOR_CONFIG with the appropriate location before you begin a 
> particular master. If each master sees a different CONDOR_CONFIG 
> variable, you'll be fine.
>
> You will want the directories to be unique for each one.

Thank you for the quick answer. I have some more questions now.

The good thing is that I was now able to start two masters:

11169 ?        S      0:00 /opt/condor/sbin/condor_master
11170 ?        S      0:00 condor_collector -f
11171 ?        S      0:00 condor_negotiator -f
11172 ?        S      0:01 condor_startd -f
11173 ?        S      0:00 condor_schedd -f
11215 ?        S      0:00 /opt/condor/sbin/condor_master
11216 ?        S      0:01 condor_startd -f
11217 ?        S      0:00 condor_schedd -f

Each master should have his own directory and configuration files. The 
configuration should almost be the same; the only differences are the 
values for LOWPORT and HIGHPORT macros, the LOCAL_DIR and RELEASE_DIR, 
and the COLLECTOR_NAME. Do I have to change something else?

Perhaps I should elaborate on what we are trying to achieve. We have two 
pools in the same subnet and would like to have the two masters on one 
machine now.

So, I have a more questions now:

1. What could be the reason that the second condor isn't starting 
collector and negotiator? IMHO they should start because it's (more or 
less) the same configuration file.

2. Is there a way to tell the clients to which master they should 
connect if there are different masters on the same machine in the same 
subnet? The only thing I could think of is the port setting. But I have 
tried this, giving two clients different ports and they seem to connect 
to the same master.

Thank you again,
Christian.