LDAP Search Time is above configured threshold
Hi,
I got the following alert from SCOM on a particular server every 5 min. The funny thing is I only got a "close" and none "open" alert. Anybody can shine some light?
Subject: Alert: LDAP Search Time is above configured threshold Priority: 1 Severity: 2 Resolution state: Closed
Alert: LDAP Search Time is above configured threshold
Source: Information Store
Path: servername.domain.com;ServerName
Last modified by: System
Last modified time: 5/3/2011 5:35:33 PM
Alert description: The LDAP Search Time is above configured threshold.
The current value is 8
Alert view link:
http://
Notification subscription ID generating this message:
Desmond Tan http://sgwindowsgroup.org/blogs/desmond/
May 4th, 2011 4:26am
Hi
If you look at the alert details (Alert History and Alert Context tabs), are there any time sync issues? Is the time the alert get closed before the time the alert is generated?
Cheers
GrahamView OpsMgr tips and tricks at
http://systemcentersolutions.wordpress.com/
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May 4th, 2011 4:35am
Hi Graham,
Where can I find that under SCOM administration console? Btw, I'm using SCOM 2007 R2.
Cheers,
DesmondDesmond Tan http://sgwindowsgroup.org/blogs/desmond/
May 4th, 2011 4:48am
Hi Desmond
In the OpsMgr console, under monitoring, create an alert view for closed alerts (resolution state = 255).
Then, in this view, (monitoring, closed alerts), you can investigate the details of the closed alerts.
Cheers
Graham View OpsMgr tips and tricks at
http://systemcentersolutions.wordpress.com/
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May 4th, 2011 7:31am
There's a monitor called "LDAP Search Time Monitor" which generates the alerts. Basically it average the ldap search times over 5 samples and takes 1 sample every 5 minutes. When the average over 5 samples is above 50 it will generate an alert.
I really think this monitor type is faulty, it will generate unnecessary alerts and it can generate a state change (and raise/close an alert) every sample (moving average, evaluting the threshold for the latest 5 samples every time a new sample is taken).
Also it would make more sense to change this to a 5 consecutive sample over threshold monitor so sample values of 1000000,0,0,0,0 don't give an alert (just a spike in which your not really interested).
All this doesn't help you at all of course. if you really have a lot of this alerts, but no complaining users about performance i'd take a baseline of the ldap search time monitor and set a new value for threshold or just disable the monitor when you will
never take any action on this anyway.
Rob Korving
http://jama00.wordpress.com/
May 4th, 2011 10:30am
There's a monitor called "LDAP Search Time Monitor" which generates the alerts. Basically it average the ldap search times over 5 samples and takes 1 sample every 5 minutes. When the average over 5 samples is above 50 it will generate an alert.
I really think this monitor type is faulty, it will generate unnecessary alerts and it can generate a state change (and raise/close an alert) every sample (moving average, evaluting the threshold for the latest 5 samples every time a new sample is taken).
Also it would make more sense to change this to a 5 consecutive sample over threshold monitor so sample values of 1000000,0,0,0,0 don't give an alert (just a spike in which your not really interested).
All this doesn't help you at all of course. if you really have a lot of this alerts, but no complaining users about performance i'd take a baseline of the ldap search time monitor and set a new value for threshold or just disable the monitor when you will
never take any action on this anyway.
Rob Korving
http://jama00.wordpress.com/
Free Windows Admin Tool Kit Click here and download it now
May 4th, 2011 10:30am
Hi Graham,
The time is fine. all alert is close in less than 5sec from the alert created time.
Hi Rob,
I do agree with you. Could you share with me how I can set the monitor to tave consecutive sample instate of average over 5 sample?
Regard
DesmondDesmond Tan http://sgwindowsgroup.org/blogs/desmond/
May 5th, 2011 12:41am
Hi Graham,
The time is fine. all alert is close in less than 5sec from the alert created time.
Hi Rob,
I do agree with you. Could you share with me how I can set the monitor to tave consecutive sample instate of average over 5 sample?
Regard
DesmondDesmond Tan http://sgwindowsgroup.org/blogs/desmond/
Free Windows Admin Tool Kit Click here and download it now
May 5th, 2011 12:41am
you can't other than: disable the monitor and recreate the monitor based on the consecutive samples monitor type. But before you do i'd collect and check the ldap search time counter and check if it's gonna be helpful to change or a threshold
value change would do.Rob Korving
http://jama00.wordpress.com/
May 5th, 2011 12:36pm
Hi,
I think you may find the source monitor or rule via the alert details. Regarding the LDAP Search Time Monitor, I found the following information:
Monitors Disabled by Default
http://technet.microsoft.com/en-us/library/dd772513.aspx
Please see “Common LDAP Search Time Monitor”.
LDAP Search Time Monitor
http://mpwiki.viacode.com/default.aspx?g=posts&t=3708
Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
I also think you can try some adjustments with overrides:
How to Monitor Using Overrides
http://technet.microsoft.com/en-us/library/bb309719.aspx
Best practices to use when you configure overrides in System Center Operations Manager 2007
http://support.microsoft.com/kb/943239
Hope this helps.
Thanks.
Nicholas Li - MSFT
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May 6th, 2011 1:23am