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SNMP stopped working (timeout) after installing the iDRAC service module
One of our PowerEdge R650 has a failing power supply and while clicking through the iDRAC interface, I thought it was a good idea to install the iDRAC service module. After doing it via the virtual console, I no longer get any information via SNMP (port 161) from the server, so Grafana has no data and therefore all the alerts are now broken. Why has SNMP stopped working after installing the service module?
$ snmpget -v1 -c public 10.20.30.40:161 .1.3.6.1.4.1.674.10892.5.2.4.0iso.3.6.1.4.1.674.10892.5.2.4.0 = INTEGER: 4# 10.20.30.41 is the host where the iDRAC service module has been installed, since then, it gives a Timeout via SNMP$ snmpget -v1 -c public 10.20.30.41:161 .1.3.6.1.4.1.674.10892.5.2.4.0Timeout: No Response from 10.189.161.29:161.
tamasgal
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June 11th, 2024 07:45
I found the problem. The installation procedure of the ISM changed the SNMP Community Name from the default "public" to "ismuser". I don't think it's a good idea to change configurations without notifying the user. I now changed it back to "public" but I am pretty sure the ISM will now complain.
DELL-Young E
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June 10th, 2024 04:55
Hello, I can't tell which OS you are using but either way, ISM (idrac service module) isn't really relevant to SNMP. ISM is just a software that is installed on an OS. To be sure, can you see if the SNMP still works the way you want after uninstalling ISM?
Respectfully,
tamasgal
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June 11th, 2024 07:12
I am using Ubuntu 20.04.4 LTS. The SNMP monitoring worked straight for 2 years and stopped working for that very machine one minute after installing the ISM (I got the Grafana alert due to missing data points immediately), so I am pretty sure it's related. How do I uninstall the ISM?
tamasgal
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June 11th, 2024 07:20
I found https://www.dell.com/support/manuals/en-de/idrac-service-module-5.0/ism_5.0.1.0_ug_pub/uninstall-idrac-service-module-using-the-uninstall-script?guid=guid-bb7c73e4-a691-4372-9cc3-0c2b230a89ab&lang=en-us but the script is called "dcism-setup.sh" and not "setup.sh", I guess (at least I don't have a setup.sh), however I get: