Disk monitoring with group override
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Friday, September 30, 2011 8:20 PM
I'm new to SCOM 2007 and have been reading and watching videos consistently for the past week, but I'm not quite sure where the mistake is being made. I've read the blogs about creating monitors and groups, but not combining the two together.
I've created a group consisting of the server with the drive (Y:). I then create a Windows Server 2003 Logical Disk monitor regarding %Free Space and to alert me when it hits a threshold of 50% disk space used. Now after the monitor is completed, I attempt to override with the group I created and it does not display in my list.
My specified counters are as follows Object: LogicalDisk; Counter: % Free Space; and Instance: Y: (browsed for server & drive).
What I'm attempting to do is only monitor this one drive for % free space and none others. Going off what I have done so far will alert me that Performance Module could not find a performance counter for Y: drives that the other Servers do not have, which makes sense. Besides my group not displaying when trying to override am I going at this task the right way or is there another path I can take?
All Replies
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Saturday, October 01, 2011 2:00 PM
if MPs are unsealed, then the rule and the group should be created in the same ManagementPack.
did you create the rule and the monitor in the same unsealed MP?
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Tuesday, October 04, 2011 2:33 PMModerator
Hi
How did you target the monitor? You can't target groups:
Kevin Holman has written a good guide to writing monitors to target logical disks here:
Cheers
Graham
New SCOM 2012 Blog! - http://www.systemcentersolutions.com/blog/
View OpsMgr tips and tricks at http://systemcentersolutions.wordpress.com/ -
Tuesday, October 04, 2011 7:35 PMThe MP was indeed unsealed, but I'm working with little knowledge and learning as I go. We had SCOM 2007 set up for us by an outside source and left without any documentation!
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Tuesday, October 04, 2011 7:42 PM
Thanks for the links on the targeting blogs, I believe what I'll find in there will help a bunch. I was attempting to apply the monitor to the group or vice versa, which obviously did not work as I intended.
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Wednesday, October 05, 2011 1:32 PMModerator
If you want to see what overrides have been set then there is an overrides report (it is one of the microsoft generic report library reports). As you realise, it won't tell you why an override was set but at least you'll be able to see what was done.
Cheers
Graham
New SCOM 2012 Blog! - http://www.systemcentersolutions.com/blog/
View OpsMgr tips and tricks at http://systemcentersolutions.wordpress.com/ -
Wednesday, October 05, 2011 1:36 PMModerator
Hi
Targeting rules \ monitors isn't the most intuitive of activities. You can target overrides at groups (in fact, I'd say it was best practice where possible to do this) but the underlying rule \ monitor \ discovery has to be targetted at a class.
For custom authoring, this means that if you want to target only a subset of servers then you'd create the rule \ monitor disabled and targetted at the most appropriate class. Then enable the monitor \ rule for the group of servers that you want the monitor \ rule to run on. This pdf might help with deciding what class to choose as the target.
http://www.scom2k7.com/scom-2007-targeting/
Cheers
Graham
New SCOM 2012 Blog! - http://www.systemcentersolutions.com/blog/
View OpsMgr tips and tricks at http://systemcentersolutions.wordpress.com/- Marked As Answer by Nicholas LiMicrosoft Contingent Staff, Moderator Wednesday, October 12, 2011 3:31 AM
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Wednesday, October 05, 2011 10:53 PM
I managed to get this working properly with the use of a group. My main problem was trying to use the Default MP and once choosing another unsealed MP, I was able to override via group.
I also changed the way I tackled the grouping drive task. First off, I was only monitoring ONE logical drive out of a hundred or so, so my grouping properties is Does not equal drive <Y:> AND Does not equal <server01>. During my override I changed the Enabled row to not include those within my group and therefore monitor my critical drive.
I'll eventually figure out the right way to do this, but it works as is. Thank you guys for the help!
- Marked As Answer by Nicholas LiMicrosoft Contingent Staff, Moderator Wednesday, October 12, 2011 3:31 AM
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Thursday, October 06, 2011 7:04 AMModerator
Hi
The good news is that in SCOM2012 beta, the default management pack will no longer be the default location to save overrides. It isn't good practice. I've collected a series of articles and posts on overrides here:
http://systemcentersolutions.wordpress.com/category/overrides/
If you need to clean up the default management pack then there are a few articles here:
http://blogs.technet.com/b/kevinholman/archive/2008/11/11/cleaning-up-the-default-mp.aspx
http://blogs.technet.com/b/kevinholman/archive/2011/02/15/renaming-your-default-management-pack.aspx
http://blogs.technet.com/b/jonathanalmquist/archive/2008/11/12/monitor-default-management-pack.aspx
Cheers
Graham
New SCOM 2012 Blog! - http://www.systemcentersolutions.com/blog/
View OpsMgr tips and tricks at http://systemcentersolutions.wordpress.com/- Proposed As Answer by Nicholas LiMicrosoft Contingent Staff, Moderator Monday, October 10, 2011 3:23 AM
- Marked As Answer by Nicholas LiMicrosoft Contingent Staff, Moderator Wednesday, October 12, 2011 3:31 AM
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