CentOS - Apr 2021 - Missing /etc/ld.so.conf.d/kernel-3.10.0-1127.19.1.el7.x86_64.conf

On 4/11/21 11:32 AM, Kenneth Porter wrote:
> I'm yum updating some CentOS 7 systems today and got this error. Two
> systems (so far) seem to have rebooted fine. Should I worry?
> 
> error: file /etc/ld.so.conf.d/kernel-3.10.0-1127.19.1.el7.x86_64.conf:
> No such file or directory
The kernel does does contain that file.  In CentOS linux 7 (and 8), the
file is actually blank .. well is has one comment line:

# Placeholder file, no vDSO hwcap entries used in this kernel.


If you want the error to go away, just as the root user, do:

touch /etc/ld.so.conf.d/kernel-3.10.0-1127.19.1.el7.x86_64.conf
chmod 444 /etc/ld.so.conf.d/kernel-3.10.0-1127.19.1.el7.x86_64.conf

The above 2 commands should create a zero size file there and prevent
the error.

As to how you got the error .. it seems there is an issue with the
kernel-3.10.0-1127.19.1.el7.x86_64 install on your machine, it is at
least missing that file.  If you are using that kernel .. you might want
to re-install it instead to make sure all the files are there.  There is
a newer kernel released for EL7.

As to the purpose of /etc/ld.so.conf.d/, info here:

https://linux.101hacks.com/unix/ldconfig/

On 4/12/21 8:34 AM, Johnny Hughes wrote:
> On 4/11/21 11:32 AM, Kenneth Porter wrote:
>> I'm yum updating some CentOS 7 systems today and got this error.
Two
>> systems (so far) seem to have rebooted fine. Should I worry?
>>
>> error: file /etc/ld.so.conf.d/kernel-3.10.0-1127.19.1.el7.x86_64.conf:
>> No such file or directory
> 
> The kernel does does contain that file.  In CentOS linux 7 (and 8), the
> file is actually blank .. well is has one comment line:
> 
> # Placeholder file, no vDSO hwcap entries used in this kernel.
> 
> 
> If you want the error to go away, just as the root user, do:
> 
> touch /etc/ld.so.conf.d/kernel-3.10.0-1127.19.1.el7.x86_64.conf
> chmod 444 /etc/ld.so.conf.d/kernel-3.10.0-1127.19.1.el7.x86_64.conf
> 
> The above 2 commands should create a zero size file there and prevent
> the error.
> 
> As to how you got the error .. it seems there is an issue with the
> kernel-3.10.0-1127.19.1.el7.x86_64 install on your machine, it is at
> least missing that file.  If you are using that kernel .. you might want
> to re-install it instead to make sure all the files are there.  There is
> a newer kernel released for EL7.
> 
> As to the purpose of /etc/ld.so.conf.d/, info here:
> 
> https://linux.101hacks.com/unix/ldconfig/
> 
That is the general description of ldconfig, which is transparent and 
clear as to what ldconfig purpose is.

What is puzzling for me (I'm sure you are answering my question): why 
anything related to kernel package should be needed for automatically 
searching for shared libraries to be loaded (when one uses anything 
linked to shared libraries)? What kernel package brings that can have 
anything to do with that??!

Thanks for insights!

Valeri
> 
> 
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos
> 
-- 
++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++

--On Monday, April 12, 2021 9:34 AM -0500 Johnny Hughes <johnny at
centos.org>
wrote:
> As to how you got the error .. it seems there is an issue with the
> kernel-3.10.0-1127.19.1.el7.x86_64 install on your machine, it is at
> least missing that file.  If you are using that kernel .. you might want
> to re-install it instead to make sure all the files are there.  There is
> a newer kernel released for EL7.
My yum update installed 1160.24, so I'm up to date now. "rpm -V
kernel" for
5 installed kernels is silent. I'd guess 1127.19 (from August) was somehow 
damaged.