At Sun, 2 Aug 2020 06:59:06 -0500 CentOS mailing list centos@centos.org wrote:
On 8/2/20 2:04 AM, Alessandro Baggi wrote:
Il 01/08/20 22:03, Greg Bailey ha scritto:
On 8/1/20 6:56 AM, david wrote:
At 02:54 AM 8/1/2020, Alessandro Baggi wrote:
Hi Johnny, thank you very much for clarification.
You said that in the centos infrastructure only one server got the problem. What are the conditions that permit the breakage? There is a particular configuration (hw/sw) case that match always the problem or it is random?
Thank you
I have two servers running Centos 7 on apple hardware (one mac-mini and one mac server).ÃÂ They both failed to reboot a few days ago.ÃÂ So perhaps whatever anti-boot bug hit Centos 8, also hit Centos 7.ÃÂ I can't tell what version got updated since the system simply fails to boot.ÃÂ I don't even get a grub screen. I'll have to rebuild the systems from scratch.
You should be able to boot off of installation media into rescue mode, and downgrade the grub2* and/or shim* RPMs.
-Greg
I did the downgrade on a fresh install of c8.2 but yum said that all selected packages (grub2,shim...) are already to the lowest version and the downgrade is not possibile, ending with "nothing to do".
Ok .. We are running through some final testing now for CentOS Linux 8 and CentOS Stream .. updates later today for EL8.
For CentOS Linux 7 .. I just pushed the latest shim packages (we had to get these signed by Microsoft .. as do all distros that do shim. Microsoft is the official CA for secureboot.
So in the next few hours, after the mirrors sync up .. you should be able to fix any EL7 machines.
Question: is this only a problem for bare metal w/EFI or are VMs affected? I have a VPS running CentOS 7:
sharky4.deepsoft.com% uname -a Linux sharky4.deepsoft.com 3.10.0-1127.13.1.el7.x86_64 #1 SMP Tue Jun 23 15:46:38 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux sharky4.deepsoft.com% rpm -qa grub* shim* grub2-tools-extra-2.02-0.81.el7.centos.x86_64 grub2-pc-modules-2.02-0.81.el7.centos.noarch grub2-tools-minimal-2.02-0.81.el7.centos.x86_64 grub2-2.02-0.81.el7.centos.x86_64 grub2-tools-2.02-0.81.el7.centos.x86_64 grubby-8.28-26.el7.x86_64 grub2-common-2.02-0.81.el7.centos.noarch grub2-pc-2.02-0.81.el7.centos.x86_64 sharky4.deepsoft.com%
I have these (pending) updates:
sharky4.deepsoft.com% sudo /usr/bin/yum check-update Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.es.its.nyu.edu * epel: mirror.math.princeton.edu * extras: mirror.facebook.net * updates: mirror.atlanticmetro.net
fail2ban.noarch 0.11.1-9.el7.2 epel fail2ban-firewalld.noarch 0.11.1-9.el7.2 epel fail2ban-sendmail.noarch 0.11.1-9.el7.2 epel fail2ban-server.noarch 0.11.1-9.el7.2 epel fail2ban-systemd.noarch 0.11.1-9.el7.2 epel grub2.x86_64 1:2.02-0.86.el7.centos updates grub2-common.noarch 1:2.02-0.86.el7.centos updates grub2-pc.x86_64 1:2.02-0.86.el7.centos updates grub2-pc-modules.noarch 1:2.02-0.86.el7.centos updates grub2-tools.x86_64 1:2.02-0.86.el7.centos updates grub2-tools-extra.x86_64 1:2.02-0.86.el7.centos updates grub2-tools-minimal.x86_64 1:2.02-0.86.el7.centos updates kernel.x86_64 3.10.0-1127.18.2.el7 updates kernel-headers.x86_64 3.10.0-1127.18.2.el7 updates kernel-tools.x86_64 3.10.0-1127.18.2.el7 updates kernel-tools-libs.x86_64 3.10.0-1127.18.2.el7 updates python-perf.x86_64 3.10.0-1127.18.2.el7 updates
Is it "safe" for me to to do a yum update or should I wait?
I'll post here again once we have pushed the EL8 and CentOS Stream updates.
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