At Sun, 2 Aug 2020 06:59:06 -0500 CentOS mailing list <centos at 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). They both failed to reboot a few days ago. So > >>> perhaps whatever anti-boot bug hit Centos 8, also hit Centos 7. I > >>> can't tell what version got updated since the system simply fails to > >>> boot. 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. > > Content-Description: OpenPGP digital signature > > -----BEGIN PGP SIGNATURE----- > > iF0EARECAB0WIQTn6goIPoKGmzXde4tMqQyCasFjswUCXyaqigAKCRBMqQyCasFj > swMtAKCIljOaB6o0mxnvIUqA0pP2l16hUwCgnmSj3aPKOym7s58ismQ0mDKfwus= > =S/HK > -----END PGP SIGNATURE----- > > MIME-Version: 1.0 > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > > > -- Robert Heller -- Cell: 413-658-7953 GV: 978-633-5364 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller at deepsoft.com -- Webhosting Services