# cat /etc/default/kdump-tools 
# kdump-tools configuration
# ---------------------------------------------------------------------------
# USE_KDUMP - controls kdump will be configured
#     0 - kdump kernel will not be loaded
#     1 - kdump kernel will be loaded and kdump is configured
# KDUMP_SYSCTL - controls when a panic occurs, using the sysctl 
#     interface.  The contents of this variable should be the
#     "variable=value ..." portion of the 'sysctl -w ' command.
#     If not set, the default value "kernel.panic_on_oops=1" will
#     be used.  Disable this feature by setting KDUMP_SYSCTL=" "
#     Example - also panic on oom:
#         KDUMP_SYSCTL="kernel.panic_on_oops=1 vm.panic_on_oom=1"
#
USE_KDUMP=1
#KDUMP_SYSCTL="kernel.panic_on_oops=1"


# ---------------------------------------------------------------------------
# Kdump Kernel:
# KDUMP_KERNEL - A full pathname to a kdump kernel.
# KDUMP_INITRD - A full pathname to the kdump initrd (if used).
#     If these are not set, kdump-config will try to use the current kernel
#     and initrd if it is relocatable.  Otherwise, you will need to specify 
#     these manually.
KDUMP_KERNEL=/var/lib/kdump/vmlinuz
KDUMP_INITRD=/var/lib/kdump/initrd.img


# ---------------------------------------------------------------------------
# vmcore Handling:
# KDUMP_COREDIR - local path to save the vmcore to.
# KDUMP_FAIL_CMD - This variable can be used to cause a reboot or
#     start a shell if saving the vmcore fails.  If not set, "reboot -f"
#     is the default.
#     Example - start a shell if the vmcore copy fails:
#         KDUMP_FAIL_CMD="echo 'makedumpfile FAILED.'; /bin/bash; reboot -f"
# KDUMP_DUMP_DMESG - This variable controls if the dmesg buffer is dumped.
#     If unset or set to 1, the dmesg buffer is dumped. If set to 0, the dmesg
#     buffer is not dumped.
KDUMP_COREDIR="/var/crash"
#KDUMP_FAIL_CMD="reboot -f"
#KDUMP_DUMP_DMESG=
# KDUMP_NUM_DUMPS - This variable controls how many dump files are kept on
#     the machine to prevent running out of disk space. If set to 0 or unset,
#     the variable is ignored and no dump files are automatically purged.
KDUMP_COREDIR="/var/crash"
#KDUMP_FAIL_CMD="reboot -f"
#KDUMP_DUMP_DMESG=
#KDUMP_NUM_DUMPS=


# ---------------------------------------------------------------------------
# Makedumpfile options:
# MAKEDUMP_ARGS - extra arguments passed to makedumpfile (8).  The default,
#     if unset, is to pass '-c -d 31' telling makedumpfile to use compression
#     and reduce the corefile to in-use kernel pages only.
#MAKEDUMP_ARGS="-c -d 31"


# ---------------------------------------------------------------------------
# Kexec/Kdump args
# KDUMP_KEXEC_ARGS - Additional arguments to the kexec command used to load
#     the kdump kernel
#     Example - Use this option on x86 systems with PAE and more than 
#     4 gig of memory:
#         KDUMP_KEXEC_ARGS="--elf64-core-headers"
# KDUMP_CMDLINE - The default is to use the contents of /proc/cmdline.  
#     Set this variable to override /proc/cmdline.
# KDUMP_CMDLINE_APPEND - Additional arguments to append to the command line 
#     for the kdump kernel.  If unset, it defaults to "irqpoll nr_cpus=1 nousb"
#KDUMP_KEXEC_ARGS=""
#KDUMP_CMDLINE=""
#KDUMP_CMDLINE_APPEND="irqpoll nr_cpus=1 nousb systemd.unit=kdump-tools.service"

# ---------------------------------------------------------------------------
# Architecture specific Overrides:

# ---------------------------------------------------------------------------
# Remote dump facilities:
# SSH - username and hostname of the remote server that will receive the dump
# 	and dmesg files.
# SSH_KEY - Full path of the ssh private key to be used to login to the remote
# 	    server. use kdump-config propagate to send the public key to the
# 	    remote server
# HOSTTAG - Select if hostname of IP address will be used as a prefix to the
#           timestamped directory when sending files to the remote server.
#           'ip' is the default.
# NFS -     Hostname and mount point of the NFS server configured to receive
#           the crash dump. The syntax must be {HOSTNAME}:{MOUNTPOINT} 
#           (e.g. remote:/var/crash)
#
# SSH="<user at server>"
#
# SSH_KEY="<path>"
#
# HOSTTAG="hostname|[ip]"
# 
# NFS="<nfs mount>"
#