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We have a centos 8 server that has been bricked, and there doesn't seem to be any solution right now. Downgrading the packages shows "lowest version already ins

We have a centos 8 server that has been bricked, and there doesn't seem to be any solution right now. Downgrading the packages shows "lowest version already installed, cannot downgrade it.", and I can't manually install the old packages because there doesn't seem to be any way of getting them. Someone says to use http://mirror.centos.org/centos-8/8.2.2004/BaseOS/x86_64/os/Packages/ http://mirror.centos.org/centos-8/8.2.2004/BaseOS/x86_64/os/... but that seems to have the very latest packages and even after updating the affected ones it still fails to boot.

asicsp 6y ago
See if this helps: https://www.reddit.com/r/linux/comments/i1hlay/red_hat_and_centos_systems_arent_booting_due_to/fzxu4xs/ https://www.reddit.com/r/linux/comments/i1hlay/red_hat_and_c...
- cpncrunch 6y ago
  It just links to the redhat info which doesn't work on centos 8.2 (error message is that those packages are already at lowest versions).
cesarb 6y ago
> Someone says to use http://mirror.centos.org/centos-8/8.2.2004/BaseOS/x86_64/os/Packages/ http://mirror.centos.org/centos-8/8.2.2004/BaseOS/x86_64/os/... but that seems to have the very latest packages At least for me, that page seems to have both shim-x64-15-13.el8.x86_64.rpm from 2020-07-29 22:10 and the older shim-x64-15-11.el8.x86_64.rpm from 2020-05-07 19:53; the older one should work. Worst case, you could manually copy the shim executables from a working server to the EFI partition of the broken server (from what I have read at https://bugzilla.redhat.com/show_bug.cgi?id=1861977 https://bugzilla.redhat.com/show_bug.cgi?id=1861977, in the RHEL/CentOS case it's the shim executable which is broken, so you don't have to do anything to the grub executables).
- cpncrunch 6y ago
  Yes, I see I needed to look for the 81 version numbers. I have now installed those packages (and confirmed I have the older grubx64.efi in /boot/efi/EFI/). However it is still giving the same error on reboot. I installed these rpms (which are the affected ones for my system): grub2-common-2.02-81.el8.noarch.rpm grub2-efi-x64-2.02-81.el8.x86_64.rpm grub2-pc-2.02-81.el8.x86_64.rpm grub2-pc-modules-2.02-81.el8.noarch.rpm grub2-tools-2.02-81.el8.x86_64.rpm grub2-tools-efi-2.02-81.el8.x86_64.rpm grub2-tools-extra-2.02-81.el8.x86_64.rpm grub2-tools-minimal-2.02-81.el8.x86_64.rpm Is anything else needed? I'm thinking the easiest solution is for me just to wait a few days and do a "yum update" in rescue mode once an update fix is available. Luckily this is a non-critical server.
CUViper 6y ago
I see both the old and new packages on mirrors.kernel.org: https://mirrors.edge.kernel.org/centos/8.2.2004/BaseOS/x86_64/os/Packages/ https://mirrors.edge.kernel.org/centos/8.2.2004/BaseOS/x86_6...

asicsp 6y ago

See if this helps: https://www.reddit.com/r/linux/comments/i1hlay/red_hat_and_centos_systems_arent_booting_due_to/fzxu4xs/ https://www.reddit.com/r/linux/comments/i1hlay/red_hat_and_c...

cpncrunch 6y ago
It just links to the redhat info which doesn't work on centos 8.2 (error message is that those packages are already at lowest versions).

cesarb 6y ago

> Someone says to use http://mirror.centos.org/centos-8/8.2.2004/BaseOS/x86_64/os/Packages/ http://mirror.centos.org/centos-8/8.2.2004/BaseOS/x86_64/os/... but that seems to have the very latest packages At least for me, that page seems to have both shim-x64-15-13.el8.x86_64.rpm from 2020-07-29 22:10 and the older shim-x64-15-11.el8.x86_64.rpm from 2020-05-07 19:53; the older one should work. Worst case, you could manually copy the shim executables from a working server to the EFI partition of the broken server (from what I have read at https://bugzilla.redhat.com/show_bug.cgi?id=1861977 https://bugzilla.redhat.com/show_bug.cgi?id=1861977, in the RHEL/CentOS case it's the shim executable which is broken, so you don't have to do anything to the grub executables).

cpncrunch 6y ago
Yes, I see I needed to look for the 81 version numbers. I have now installed those packages (and confirmed I have the older grubx64.efi in /boot/efi/EFI/). However it is still giving the same error on reboot. I installed these rpms (which are the affected ones for my system): grub2-common-2.02-81.el8.noarch.rpm grub2-efi-x64-2.02-81.el8.x86_64.rpm grub2-pc-2.02-81.el8.x86_64.rpm grub2-pc-modules-2.02-81.el8.noarch.rpm grub2-tools-2.02-81.el8.x86_64.rpm grub2-tools-efi-2.02-81.el8.x86_64.rpm grub2-tools-extra-2.02-81.el8.x86_64.rpm grub2-tools-minimal-2.02-81.el8.x86_64.rpm Is anything else needed? I'm thinking the easiest solution is for me just to wait a few days and do a "yum update" in rescue mode once an update fix is available. Luckily this is a non-critical server.

CUViper 6y ago

I see both the old and new packages on mirrors.kernel.org: https://mirrors.edge.kernel.org/centos/8.2.2004/BaseOS/x86_64/os/Packages/ https://mirrors.edge.kernel.org/centos/8.2.2004/BaseOS/x86_6...