Capture a vmcore on Nutanix Instances via NMI
Environment
- Red Hat Enterprise Linux (RHEL)
- Nutanix AHV Hypervisor
Issue
- How to configure Kdump on Nutanix AHV Hypervisor.
- How to manually generate vmcore at the time of system hung by sending NMI.
Prerequisites
-
Kdump should be running and tested before; follow this article to configure and test the Kdump Utility.
How to troubleshoot kernel crashes, hangs, or reboots with kdump on Red Hat Enterprise Linux -
Alternatively, for Kdump Configuration purpose use of Kdump helper can also be considered.
-
NMIpanic tunables need to be enabled.
Resolution
- Once the above settings have been successfully configured and tested, refer to the following article for instructions on sending an NMI in AHV:
How to generate memory dump for hung Windows/Linux VM on AHV
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