Kernel crash dumps

Red Hat Enterprise Linux CoreOS (RHCOS) based machines do not support configuring kdump or generating kernel crash dumps for Red Hat OpenShift Container Platform 4.6 and earlier. For more information, see How to configure kdump in Red Hat CoreOS in Red Hat OpenShift documentation.

In some virtual machine installations, it may be possible to generate a vmcore crash dump from the hypervisor.

In lieu of kernel dumps, CoreOS currently recommends using pstore, even if only small snippets of diagnostic data can be collected. For more information, see Using pstore in CoreOS documentation on GitHub.