kdump.conf(5) — a manual page for the /etc/kdump.conf configuration file containing the full documentation of available options.

makedumpfile(8) — a manual page for the makedumpfile core collector.

kexec(8) — a manual page for kexec.

crash(8) — a manual page for the crash utility.

/usr/share/doc/kexec-tools-version/kexec-kdump-howto.txt — an overview of the kdump and kexec installation and usage.