Computer Room AC (CRAC) Discovery

[AmreenS75202193]

Hi All,

Wanted to check regarding "Computer Room AC (CRAC)" Discovery. Has anyone implemented this? I don't see a table "cmdb_ci_crac" in the SNMP classifier drop down menu.

Quick response is highly appreciated!

Thanks & Regards,

Amreen.

[VIJAY YACHAM1]

Hello @AmreenS75202193 ,

Please find the below solution which we have implemented for my client, for your question please refer point-2 which will help to create new SNMP OID:

1. Create a Custom Class in CMDB

If your organization wants to track CRAC units in the CMDB:

• Navigate to CMDB Class Manager

• Extend from cmdb_ci (or cmdb_ci_hvac if available)

• Create a new class: e.g., cmdb_ci_crac

• Add custom attributes like:

  • Temperature range

  • Manufacturer

  • Model

  • SNMP OID

  • Power status, etc.

2. Custom SNMP Classifier

Since these devices typically respond to SNMP, but are not in the default classifier library:

• Go to Discovery > SNMP Classifiers

• Click New

• Define:

  • Name: CRAC Classifier

  • OID: Based on your CRAC vendor's MIB/OID (e.g., Liebert, APC, etc.)

  • CI Type: Your new cmdb_ci_crac table

  •  You may need your vendor’s MIB files or SNMP walk output to find the right OIDs.

3. Custom Pattern (Optional but Ideal)

• Go to Discovery Patterns

• Create a new pattern for SNMP and associate it with your new classifier

• Define steps to map SNMP values to CI fields

• Run SNMP Walk from your MID Server to the CRAC IP address

• Confirm SNMP version, community string (v2c) or credentials (v3)

• Validate that the correct OIDs are responding

Please mark my solution as helpful which helps me.

Thanks,

Vijay

[AmreenS75202193]

Hello @VIJAY YACHAM1 ,

I do see that here is already a table(cmdb_ci_crac) extended from cmdb_ci. But my concern is that this specific table is not appearing in the SNMP classifier drop down menu, when I am trying to add the SNMP OID.

I also created a custom pattern but facing challenge due to missing cmdb_ci_crac table name from the drop down menu of snmp classifier. Any suggestions ??

Thanks, 

Amreen

[VIJAY YACHAM1]

Hello @AmreenS75202193 ,

Please follow the below steps:

1. Go to OID repository.

2. Provide the OID of the CI

3. Post that we will get the details of device.

After completion of these steps you'll get the correct classifier under the correct table.

Thanks,

Vijay

[Marcio Olivieri]

Thanks for sharing. What about sensors/probes, didn't you have to create those?