Could you provide some more details? What's the underlying virtualization system? Is this PV or HVM VM's? Etc
On Thu, Aug 29, 2019, 19:34 Matt Faraday <[email protected]> wrote: > Hi All, > > I'm facing a strange issue, where I've modified /etc/default/grub in my > image to change GRUB_CMDLINE_LINUX to add some extra flags. If I do this to > an already running instance, it's fine, a reboot and the changes persist. > > I'm creating images using packer, and if I make this change when creating > an image, when the instance starts those changes are not there, despite > packer making the change and then creating the image. > > Any idea what is over-writing this ? Can't seem to find any info online, > and other people suggest making changes to the kernel boot parameters in > the same way as I'm doing. I am also running grub2-mkconfig -o > /boot/grub2/grub.cfg as well after making the change. > > OS is CentOS 7. > > Example output from packer (it does a cat /etc/default/grub for me to show > what it is) > > [0;32m openstack: GRUB_TIMEOUT=1 [0m > [0;32m openstack: GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' > /etc/system-release)" [0m > [0;32m openstack: GRUB_DEFAULT=saved [0m > [0;32m openstack: GRUB_DISABLE_SUBMENU=true [0m > [0;32m openstack: GRUB_TERMINAL="serial console" [0m > [0;32m openstack: GRUB_SERIAL_COMMAND="serial --speed=115200" [0m > [0;32m openstack: GRUB_CMDLINE_LINUX="console=tty0 crashkernel=auto > console=ttyS0,115200 net.ifnames=0 biosdevname=0 audit=1" > > but after starting the image .... > > [root@kernel4-nic-test-2471ee92 cloud]# cat /etc/default/grub > > GRUB_TIMEOUT=1 > GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" > GRUB_DEFAULT=saved > GRUB_DISABLE_SUBMENU=true > GRUB_TERMINAL="serial console" > GRUB_SERIAL_COMMAND="serial --speed=115200" > GRUB_CMDLINE_LINUX="console=tty0 crashkernel=auto console=ttyS0,115200" > > > Does anyone know what is overwriting this ? > > -- > This mailing list is governed under the HashiCorp Community Guidelines - > https://www.hashicorp.com/community-guidelines.html. Behavior in > violation of those guidelines may result in your removal from this mailing > list. > > GitHub Issues: https://github.com/mitchellh/packer/issues > IRC: #packer-tool on Freenode > --- > You received this message because you are subscribed to the Google Groups > "Packer" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/packer-tool/ad7247f8-3b6f-482e-864b-8d165be39933%40googlegroups.com > <https://groups.google.com/d/msgid/packer-tool/ad7247f8-3b6f-482e-864b-8d165be39933%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- This mailing list is governed under the HashiCorp Community Guidelines - https://www.hashicorp.com/community-guidelines.html. Behavior in violation of those guidelines may result in your removal from this mailing list. GitHub Issues: https://github.com/mitchellh/packer/issues IRC: #packer-tool on Freenode --- You received this message because you are subscribed to the Google Groups "Packer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/packer-tool/CALz9Rt-RD4Qs-z3uOzfMey1sRMsVg8eRzjExYcD0nq9Vk0-Ftg%40mail.gmail.com.
