Version tested
dpkg -l | grep kdump
1:1.6.10ubuntu2
# edit kernel crash params due to this LP[1]
vim /etc/default/grub.d/kdump-tools.cfg
change 192MB to 512MB
save & exit
update-grub
# reboot VM
sudo reboot
kdump-config show
DUMP_MODE: kdump
USE_KDUMP: 1
KDUMP_COREDIR: /var/crash
crashkernel addr: 0x
/var/lib/kdump/vmlinuz: symbolic link to /boot/vmlinuz-5.15.0-1014-azure
kdump initrd:
/var/lib/kdump/initrd.img: symbolic link to /var/lib/kdump/initrd.img-5.15.0-1014-azure
current state: ready to kdump
# JAMMY - proposed testing
------------
# enable proposed repo sources. list.d/ ubuntu- $(lsb_release -cs)-proposed.list archive. ubuntu. com/ubuntu/ $(lsb_release -cs)-proposed restricted main multiverse universe
cat <<EOF >/etc/apt/
# Enable Ubuntu proposed archive
deb http://
EOF
sudo apt-get install kdump-tools
Version tested
dpkg -l | grep kdump
1:1.6.10ubuntu2
# edit kernel crash params due to this LP[1] grub.d/ kdump-tools. cfg
vim /etc/default/
change 192MB to 512MB
save & exit
update-grub
# reboot VM
sudo reboot
kdump-config show lib/kdump/ vmlinuz: symbolic link to /boot/vmlinuz- 5.15.0- 1014-azure lib/kdump/ initrd. img: symbolic link to /var/lib/ kdump/initrd. img-5.15. 0-1014- azure
DUMP_MODE: kdump
USE_KDUMP: 1
KDUMP_COREDIR: /var/crash
crashkernel addr: 0x
/var/
kdump initrd:
/var/
current state: ready to kdump
kexec command: line="BOOT_ IMAGE=/ boot/vmlinuz- 5.15.0- 1014-azure root=PARTUUID= fbfc827a- 3738-445e- 9fae-267258b78c 1e ro console=tty1 console=ttyS0 earlyprintk=ttyS0 panic=-1 reset_devices systemd. unit=kdump- tools-dump. service nr_cpus=1 irqpoll nousb" --initrd= /var/lib/ kdump/initrd. img /var/lib/ kdump/vmlinuz
/sbin/kexec -p --command-
cat /proc/cmdline /boot/vmlinuz- 5.15.0- 1014-azure root=PARTUUID= fbfc827a- 3738-445e- 9fae-267258b78c 1e ro console=tty1 console=ttyS0 earlyprintk=ttyS0 crashkernel= 512M-:512M panic=-1
BOOT_IMAGE=
# set priority to 1
sudo sysctl -w kernel.sysrq=1
# perform crash
echo c > /proc/sysrq-trigger
cd /var/crash
-rw-r----- 1 root root 18552 Aug 22 13:32 linux-image- 5.15.0- 1014-azure- 202208221332. crash