How To stop "Network Adapter" and few other class's data population in CMDB

[venkateshdhanap]

Hi All,

We have multiple data sources to update CMDB, we don't need to manage some class data but those are getting populated by difference data sources (Specifically Discovery). Hence our CMDB's record count crossed 9 lakh and kept on increasing. 

Is there a any way to skip the classes which we don't want to manage?

I have created IRE data source rule for "Network Adapter" against data source "ServiceNow" but discovery still populates the records. (Network Adapter alone around 6.7 Lakh records in the cmdb)

We also need to avoid below classes.

VMware Virtual Machine Instance

DNS Name

Network Adapter

Software

Switchport

Kindly provide your thought on the best way to achieve this,

Thanks in advance.

Thanks,

Venkatesh Dhanapal

[Daniel Borkowi1]

Hi Venkatesh,

can you post the IRE Datasource rule? Be aware of double negation with the flag (must be true if insert is not allowed). And ensure that this rule is created in global scope.

Greets Daniel 

[venkateshdhanap]

Please find the IRE rule in the attachment. (Its in Global scope)

Also, I didn't understand "double negation with the flag" which you mentioned, where to configure that?

[Daniel Borkowi1]

You configured it correct. Seems that ServiceNow again don't use their own rules in the IRE for discovery. So sad. The only thing you can additional test is, to create a second rule for any not used data source which allows creation. Maybe IRE only evaluates it, if there is more than one rule - but this is only guessing.

[Sohail Khilji]

Hi,

Under Discovery configuration console you can enable and disable the CI classes which you wanted to stop.

Thanks,

Sohail Khilji