nmiwatchdog, kdump

configure :- 1. nmiwatchdog
https://access.redhat.com/kb/docs/DOC-4128

2. How do I configure kexec/kdump on Red Hat Enterprise Linux?
https://access.redhat.com/kb/docs/DOC-6039

3. How can I collect system information provided to Red Hat Support for analysis when system hangs?
https://access.redhat.com/kb/docs/DOC-35282