[Spacewalk-list] 2.0 Upgrade - serious performances issues during daily "diff profiled config files and deployed config files"

[Sebastien Leterrier]

> If you mean a custom taskomatic bunch/task, then no. We never intended to let the user define custom taskomatic bunches/tasks.
> The bunches are pre-defined and the user may just adjust, how often and when they shall be scheduled.

That is good to know. Thank you!

> Is it possible that you lately increased number of managed configuration files per server?

That is indeed a possibility. I unfortunately do not remember the exact date when that happened, but I have added a few new configuration channels as well as renamed some of them lately. Nonetheless, the overall number of configuration files per server is pretty steady since a while.
As of today, we manage a total of 124 Configuration Files split in 24 Centrally Managed Configuration Channel + 4 Locally Managed configuration across 136 servers. The average number of configuration file per server is 35. This might also worth mentioning that we take advantage of channel ranking pretty intensively: it is common we managed the same configuration file across different channels to which a server is subscribed. We ensure they get the proper version of it thanks to the ranking of the channel.

Regards,
--
Sebastien
Senior Systems Administrator

-----Original Message-----
From: spacewalk-list-bounces at redhat.com [mailto:spacewalk-list-bounces at redhat.com] On Behalf Of Tomas Lestach
Sent: Tuesday, August 06, 2013 9:01 AM
To: spacewalk-list at redhat.com
Subject: Re: [Spacewalk-list] 2.0 Upgrade - serious performances issues during daily "diff profiled config files and deployed config files"

> I have just checked my configuration files size: the largest we manage
> are 60KB big. I also did some digging and to my understanding, unless
> you specify custom values for maximum_config_file_size and
> web.maximum_config_file_size in rhn.conf, the default maximum value is
> 128KB. Is that correct?

Correct.

>
> For the time being, I have disabled the scheduled job
> "compare-configs-default" which runs "compare-configs-bunch" every day
> at 23:00. Our setup is stable again but it is missing one of the key
> functionality. Bonus questions here: is there any way I could create
> new bunch that could be ran via the scheduler?

If you mean a custom taskomatic bunch/task, then no. We never intended to let the user define custom taskomatic bunches/tasks.

The bunches are pre-defined and the user may just adjust, how often and when they shall be scheduled.

> Is there a way
> to view/edit predefined bunch(es)?

You only can check what tasks get run within a bunch on the /rhn/admin/BunchDetail.do pages.

The compare config files task actually creates an action for every server with attached configuration revisions to make a diff on the client side.

> I also tried to manually run a diff against all registered clients:
> as you could expect, the end result is the same. However, if I run a
> manual diff against ~30 clients at a time, everything runs fine.

Is it possible that you lately increased number of managed configuration files per server?

Regards,
--
Tomas Lestach
Red Hat Satellite Engineering, Red Hat

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