I would suggest using multiple PostgreSQL servers running 9.2 in hot cascading replication mode and pgpool as a load balancer.
The database servers should have lots of ram because PostgreSQL likes to cache a lot of data for queries.
OSAD won't scale well to that size so you shouldn't plan to use it. Essentially there are issues with jabbed where its not scaling to the number of connections you would need for a thousand hosts.
On the proxy discussion well you would be putting your self near the limit where you would want to consider using them to offload management of some of the systems.
On the subject of VM's that should be fine but you will want to give it at least 4 cores if not 6. There are several process which can eat up to 4 cores in a short burst such as taskomatic which is the scheduler.
Also if you want to create multiple redundant instances and load balance them it is possible just not well documented as of yet. Looking at some of the Red Hat satellite documentation on the subject is a good start it mentions a few directories which you need to put on shared volumes such as NFS, GFS2, or Gluster. Also you should only run taskomatic and rhnsearchd on one node at any given time.
-- Sent from my HP Pre3
On Sep 6, 2014 10:36 PM, Jagga Soorma <[email protected]> wrote:
Hello,
I am new to spacewalk and was wondering how I should be deploying this
environment to make sure it scales appropriately. I will eventually
have a couple thousand linux install's that I will have to manage via
spacewalk. I was wondering if deploying spacewalk on a virtual
machine would work for this type of a scalibility? Also, I am
assuming I should not deploy using the internal postgres db and a
external oracle db would be preferred. Please let me know if that is
not the case. Are there any limitations in spacewalk that I should be
aware of?
Looks like there is a proxy server as well. What is the best use case
of a proxy server? All of my servers that will be managed via
spacewalk are in the same site, so I was thinking a proxy might not be
needed unless there is limitation on how many nodes can a single
instance manage.
Any help with this would be appreciated.
Thanks.
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