CentOS - Aug 2020 - 8.2.2004 Latest yum update renders machine unbootable

At 06:37 AM 8/2/2020, Johnny Hughes wrote:
>On 8/2/20 8:30 AM, david wrote:
> > At 06:10 AM 8/2/2020, you wrote:
> >> On 8/2/20 8:04 AM, david wrote:
> >> >
> >> >> <snip>
> >> >
> >> >
> >> >
> >> >> > I'll post here again once we have pushed the EL8
and CentOS Stream
> >> >> updates.
> >> >>
> >> >> OK .. I have also now pushed the CentOS Linux 8 update ..
you
> >> should see
> >> >> an update to SHIM .. the new versions are:
> >> >>
> >> >>
PowerTools/x86_64/os/Packages/shim-unsigned-x64-15-8.el8.x86_64.rpm
> >> >>
BaseOS/x86_64/os/Packages/shim-ia32-15-15.el8_2.x86_64.rpm
> >> >> BaseOS/x86_64/os/Packages/shim-x64-15-15.el8_2.x86_64.rpm
> >> >>
> >> >> For CentOS Linux 7 .. the new files are:
> >> >>
> >> >> x86_64/Packages/mokutil-15-8.el7.x86_64.rpm
> >> >> x86_64/Packages/shim-ia32-15-8.el7.x86_64.rpm
> >> >> x86_64/Packages/shim-unsigned-ia32-15-8.el7.x86_64.rpm
> >> >> x86_64/Packages/shim-unsigned-x64-15-8.el7.x86_64.rpm
> >> >> x86_64/Packages/shim-x64-15-8.el7.x86_64.rpm
> >> >>
> >> >> You need only replace the files you currently have
installed, not
> >> >> install every file.
> >> >>
> >> >> Please report both positive and negative results.
> >> >>
> >> >> Thanks,
> >> >> Johnny Hughes
> >> >>
> >> > I updated my Centos 7, and it's awaiting a reboot.??? 
The version of
> >> shim
> >> > says 15-7, which I presume is the bad one.
> >> >
> >> > What do I need to do????  Obviously, a reboot will encounter
the
> >> failure.??
> >> > Or, should I perform "yum update" periodically and
wait for shim
> >> 15-8 to
> >> > appear, and only after that do the reboot????  Or is there
some other
> >> remedy?
> >> >
> >> > And by the way, I'm amazed at the speed with which this
problem was
> >> > addressed and a fix provided.???  You guys work wonders.
> >> >
> >> > David
> >>
> >> It would be best IF the kernel and shim get installed at the same
time
> >> if possible .. so I would install the kernel again (since it is
not
> >> running yet) with the new shim.
> >>
> >> BTW .. it does not fail on every install .. so it might work w/o
the new
> >> update.?  However, no need to chance it at this point.?  Wait
until the
> >> new shim is there and install it and reinstall the kernel is my
advise.
> >
> > Here's what I get...
> >
> > rpm -qa | grep shim
> > shim-x64-15-7.el7_9.x86_64
> >
> > yum update
> > Loaded plugins: fastestmirror, langpacks, priorities
> > Loading mirror speeds from cached hostfile
> > ? * base: mirror.fileplanet.com
> > ? * epel: mirror.prgmr.com
> > ? * extras: mirror.shastacoe.net
> > ? * remi-php73: mirror.sjc02.svwh.net
> > ? * remi-safe: mirror.sjc02.svwh.net
> > ? * updates: centos-distro.1gservers.com
> > 373 packages excluded due to repository priority protections
> > No packages marked for update
> >
> >
> >
> > Should I just wait for 15-8 to appear?
> >
> > David
> >
>
>Yes .. it should be on mirror.centos.org now .. you could change the
>repo where your updates come from.  OR .. wait for that mirror to get
>updated.

I just did
yum clean all
yum update

and 15-8 showed up.  Maybe the 'clean all' did it, or maybe just showed
up.

I applied the update (yum update), rebooted and...
no boot.  Just a blank screen.

Hardware is a Mac-Mini :-(

This is not an essential machine, so I could 
re-install (from netinstall) if you think it's worth the effort.

Or what?

David

On 8/2/20 8:47 AM, david wrote:
> At 06:37 AM 8/2/2020, Johnny Hughes wrote:
>> On 8/2/20 8:30 AM, david wrote:
>> > At 06:10 AM 8/2/2020, you wrote:
>> >> On 8/2/20 8:04 AM, david wrote:
>> >> >
>> >> >> <snip>
>> >> >
>> >> >
>> >> >
>> >> >> > I'll post here again once we have pushed the
EL8 and CentOS
>> Stream
>> >> >> updates.
>> >> >>
>> >> >> OK .. I have also now pushed the CentOS Linux 8
update .. you
>> >> should see
>> >> >> an update to SHIM .. the new versions are:
>> >> >>
>> >> >>
PowerTools/x86_64/os/Packages/shim-unsigned-x64-15-8.el8.x86_64.rpm
>> >> >>
BaseOS/x86_64/os/Packages/shim-ia32-15-15.el8_2.x86_64.rpm
>> >> >>
BaseOS/x86_64/os/Packages/shim-x64-15-15.el8_2.x86_64.rpm
>> >> >>
>> >> >> For CentOS Linux 7 .. the new files are:
>> >> >>
>> >> >> x86_64/Packages/mokutil-15-8.el7.x86_64.rpm
>> >> >> x86_64/Packages/shim-ia32-15-8.el7.x86_64.rpm
>> >> >>
x86_64/Packages/shim-unsigned-ia32-15-8.el7.x86_64.rpm
>> >> >> x86_64/Packages/shim-unsigned-x64-15-8.el7.x86_64.rpm
>> >> >> x86_64/Packages/shim-x64-15-8.el7.x86_64.rpm
>> >> >>
>> >> >> You need only replace the files you currently have
installed, not
>> >> >> install every file.
>> >> >>
>> >> >> Please report both positive and negative results.
>> >> >>
>> >> >> Thanks,
>> >> >> Johnny Hughes
>> >> >>
>> >> > I updated my Centos 7, and it's awaiting a
reboot.???? The
>> version of
>> >> shim
>> >> > says 15-7, which I presume is the bad one.
>> >> >
>> >> > What do I need to do????? Obviously, a reboot will
encounter the
>> >> failure.??
>> >> > Or, should I perform "yum update" periodically
and wait for shim
>> >> 15-8 to
>> >> > appear, and only after that do the reboot????? Or is
there some
>> other
>> >> remedy?
>> >> >
>> >> > And by the way, I'm amazed at the speed with which
this problem was
>> >> > addressed and a fix provided.???? You guys work wonders.
>> >> >
>> >> > David
>> >>
>> >> It would be best IF the kernel and shim get installed at the
same time
>> >> if possible .. so I would install the kernel again (since it
is not
>> >> running yet) with the new shim.
>> >>
>> >> BTW .. it does not fail on every install .. so it might work
w/o
>> the new
>> >> update.?? However, no need to chance it at this point.?? Wait
until
>> the
>> >> new shim is there and install it and reinstall the kernel is
my
>> advise.
>> >
>> > Here's what I get...
>> >
>> > rpm -qa | grep shim
>> > shim-x64-15-7.el7_9.x86_64
>> >
>> > yum update
>> > Loaded plugins: fastestmirror, langpacks, priorities
>> > Loading mirror speeds from cached hostfile
>> > ? * base: mirror.fileplanet.com
>> > ? * epel: mirror.prgmr.com
>> > ? * extras: mirror.shastacoe.net
>> > ? * remi-php73: mirror.sjc02.svwh.net
>> > ? * remi-safe: mirror.sjc02.svwh.net
>> > ? * updates: centos-distro.1gservers.com
>> > 373 packages excluded due to repository priority protections
>> > No packages marked for update
>> >
>> >
>> >
>> > Should I just wait for 15-8 to appear?
>> >
>> > David
>> >
>>
>> Yes .. it should be on mirror.centos.org now .. you could change the
>> repo where your updates come from.? OR .. wait for that mirror to get
>> updated.
> 
> 
> I just did
> yum clean all
> yum update
> 
> and 15-8 showed up.? Maybe the 'clean all' did it, or maybe just
showed up.
> 
> I applied the update (yum update), rebooted and...
> no boot.? Just a blank screen.
> 
> Hardware is a Mac-Mini :-(
> 
> This is not an essential machine, so I could re-install (from
> netinstall) if you think it's worth the effort.
> 
> Or what?
> 
> David
You just need to reinstall the kernel and it should work.

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><snip>


> >> Yes .. it should be on mirror.centos.org now .. you could change
the
> >> repo where your updates come from.?  OR .. wait for that mirror to
get
> >> updated.
> >
> >
> > I just did
> > yum clean all
> > yum update
> >
> > and 15-8 showed up.?  Maybe the 'clean all' 
> did it, or maybe just showed up.
> >
> > I applied the update (yum update), rebooted and...
> > no boot.?  Just a blank screen.
> >
> > Hardware is a Mac-Mini :-(
> >
> > This is not an essential machine, so I could re-install (from
> > netinstall) if you think it's worth the effort.
> >
> > Or what?
> >
> > David
>
>You just need to reinstall the kernel and it should work.
>
Sorry for being so ignorant, but I don't 
understand "just reinstall the kernel".  I don't 
know how to translate that into a specific yum or rpm command.

However, since this is a crash-and-burn system, 
I'm going back to a virgin install with 
netinstall of 7 2003.  I'll let you know what the results are.

David

> 
> You just need to reinstall the kernel and it should work.
> 
> 
Is it possible to bump the kernel version number to make sure the
kernel gets re-installed on automated installs?  Or would this break
the compatibility with RHEL?

P.