Ask the Expert: Setting up the CMDB Health metrics and applying them to a real world CMDB

[Lisa Latour]

Join us on this discussion page for a YouTube Live Presentation on setting up CMDB health metrics and how to apply them.

It's an opportunity to see how the new CMDB Health Dashboard can help you manage the data quality of server and network device data. This new dashboard provides an actionable view of CI health and a remediation framework to take corrective actions.  

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Featured Expert

Presented by Richard Brounstein, ServiceNow Solution Architect for ITOM, specializing in IT Operations and crafting CMDB solutions for customers, based in the New York City area. He will be hosting a CMDB lab at Knowledge 2017. Before joining ServiceNow, Richard has more than 10 years experience as a System Engineer with Hewlett-Packard.

Watch the Demo Below and Read the Q&A below!
(Be sure to change your YouTube Setting to 720HD)

[Koyel Guha]

Hello Richard,

I am facing the same issue with this JOB "CMDB Health Dashboard - Completeness Score Calculation" even after increasing the Failure Threshold to 1000000.

Could you please suggest what needs to be done as the data is not reflecting in the dashboard and its still showing "Failure Threshold Reached" even after executing the JOB several times.

Thank You

[Abhinab Achary1]

Hi Experts,

I would like to know based on what criteria CI's are considered duplicates as i see lot of CI's that are not duplicates seems to be come as a duplicate.

If therer is already any criteria based on that how can we change it?

Let us assume in my company they want CI considered duplicates only if same serial numbers contains more than one record.

How can i achieve it?

Thanks,

Abhinab

[richardbrounste]

2 CIs are considered duplicates if the configurable identification criteria of attributes for the class of those CIs exactly match.  In the CI Class Manager, you will see a tree of CI Classes.  For the Hardware class, for example, the identification rules use the serial number as the unique identifier for the Class.  If 2 Hardware (or sub classes) CIs have the same serial number, then they are considered duplicates.  If the serial number attribute is blank, then the identification rule uses the "name" to uniquely identify the CIs.  

We do an exact match of attributes for CIs.  We don't check to see if there are "more than one serial number record".

Read this blog article for how and when we check for duplicates:  https://community.servicenow.com/community?id=community_blog&sys_id=3efc66a5dbd0dbc01dcaf3231f96193b

[mayank_ihs]

Hi Richard, 

I saw this video today and saw a question posted on the youtube comments which I believe is same as mine. Could you please throw some light on this ? 

Richard, now that Kingston is available.. how do I restrict the number of CIs included in the measurement for correctness, compleness and audit? For example we have 6,660,000 CI, some are things like next hop routing rules that I do not want to measure.

Thanks 

Mayank

[vinceb]

Good overview. Has anyone added a health type report that highlights CI classes that have abnormal quantity change over a 24 hour period.

An example:

               a decrease:  i.e. yesterday we had 2000 WAPs Wireless Access points recorded / updated in our CMDB, today we have 1500.  I would want that flagged so we could investigate why there are suddenly 500 less active devices found .

an increase:   the device count for cell phones suddenly increased from 5000 to 6000  

Both are events that either indicate a problem in how we are collecting data, a change in infrastructure somewhere or an expected addition to functionally that should have an associated change request explaining the difference in quantity.

Vince