Re: [HTCondor-users] net topology

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

On 5/26/2017 6:20 AM, lejeczek wrote:
> hi everybody
>
> like earlier, a newbie here, trying to grasp all those concepts condor 
> (may)offer.
> Question:
> Can a pool be configured with a central manager(s - in HA setup) where 
> only the central manager(s) would be submitting and the rest of the pool 
> would be on different subnet.
>
> You probably envision easily what I'm asking: HA managers(10.0.0.0 users 
> see) then the rest 10.1.0.0 users don't and submit only via c. managers' 
> 10.0.0.x.
> Would such a setup work and by allowed by the design?
>
> m.! tahnks
> L.

Not quite sure what you want from the above, but I think perhaps you 
have missed an important point re the architecture of an HTCondor pool.

In an HTCondor pool, there is:
  1. one central manager (CM), and one or more optional backup CMs if 
you bother with the HA setup.
  2. one or more submit machines.
  3. one or more execute machines.

Any machine can serve one, two, or all the of the above three roles 
simply based on what daemons are listed in DAEMON_LIST.  Your central 
manager(s) do NOT have to be the same as your submit machines.  Any 
machine in the pool that runs the "condor_schedd" daemon can act as a 
submit machine, just by adding SCHEDD to the DAEMON_LIST config knob. 
Esp for larger pools, it is a good idea to have dedicated machine(s) for 
each role: one central manager, one or submit machines, one or more 
execute machines. You can have as many submit machines as you want; here 
at UW, we have a pool with 1 central manager, ~500 execute machines, and 
80+ submit machines, as we have many submit machines that are embedded 
within various research labs that only have logins for the researchers 
in that lab.  Meanwhile our central manager is located in the 
centralized IT data center.  If one of the 80+ submit machines goes 
down, only the jobs submitted on that one submit machine are impacted; 
all the other submit machine continue to operate as normal.  More 
details on this is at

http://research.cs.wisc.edu/htcondor/manual/v8.7/3_1Introduction.html#SECTION00411000000000000000

If you are asking "can I have a submit machine that is on two networks, 
a public network that users can access via ssh to login, and a private 
network that holds all my execute nodes and my central manager", the 
answer is yes.

Hope the above helps
Todd