CentOS - Jun 2019 - Replacing kernel-headers with custom compiled version (from kernel.org) - safe?

Hello CentOS users,

Currently I have compiled kernel version 4.19.37, which the source is from
kernel.org. I compiled the kernel by following
steps:
- get the kernel tarball and unpack it
- install prerequisties as described in
https://wiki.centos.org/HowTos/Custom_Kernel (in addition bc and openssl-devel)
- copy the kernel configuration:
   $ cp /boot/config-3.10.0-957.21.3.el7.x86_64 ~/linux-4.19.37/.config
- create configuration:
   $ cd ~/linux-4.19.37
   $ make olddefconfig
   $ make nconfig
- compile and create RPM package:
   $ make vmlinux
   $ make modules
   $ make rpm-pkg
- install kernel RPM:
   # yum install ~/rpmbuild/RPMS/x86_64/kernel-*.rpm

However, in the last step (installing kernel RPM), I got following notice:
=============================================================================== 
Package        Arch   Version
                          Repository                                        Size
===============================================================================Installing:
  kernel         x86_64 4.19.37_sentinel_custom-1
                          /kernel-4.19.37_sentinel_custom-1.x86_64         209 M
  kernel-devel   x86_64 4.19.37_sentinel_custom-1
                          /kernel-devel-4.19.37_sentinel_custom-1.x86_64   817 M
  kernel-headers x86_64 4.19.37_sentinel_custom-1
                          /kernel-headers-4.19.37_sentinel_custom-1.x86_64 4.6 M
      replacing  kernel-headers.x86_64 3.10.0-957.21.3.el7

Transaction Summary
===============================================================================Install
3 Packages

There, the compiled kernel-headers package (4.19.37_sentinel_custom-1) is about
to replace stock version
(3.10.0-957.21.3.el7). Is it safe to continue installing from compiled RPM
package above, or install kernel manually?

Regards, Bagas

On Wed, Jun 26, 2019 at 5:20 AM Bagas Sanjaya <bagasdotme at gmail.com>
wrote:
>
> Hello CentOS users,
>
> Currently I have compiled kernel version 4.19.37, which the source is from
kernel.org. I compiled the kernel by following
> steps:
> - get the kernel tarball and unpack it
> - install prerequisties as described in
https://wiki.centos.org/HowTos/Custom_Kernel (in addition bc and openssl-devel)
> - copy the kernel configuration:
>    $ cp /boot/config-3.10.0-957.21.3.el7.x86_64 ~/linux-4.19.37/.config
> - create configuration:
>    $ cd ~/linux-4.19.37
>    $ make olddefconfig
>    $ make nconfig
> - compile and create RPM package:
>    $ make vmlinux
>    $ make modules
>    $ make rpm-pkg
> - install kernel RPM:
>    # yum install ~/rpmbuild/RPMS/x86_64/kernel-*.rpm
>
> However, in the last step (installing kernel RPM), I got following notice:
>
===============================================================================>
Package        Arch   Version
>                           Repository                                       
Size
>
===============================================================================>
Installing:
>   kernel         x86_64 4.19.37_sentinel_custom-1
>                           /kernel-4.19.37_sentinel_custom-1.x86_64        
209 M
>   kernel-devel   x86_64 4.19.37_sentinel_custom-1
>                           /kernel-devel-4.19.37_sentinel_custom-1.x86_64  
817 M
>   kernel-headers x86_64 4.19.37_sentinel_custom-1
>                           /kernel-headers-4.19.37_sentinel_custom-1.x86_64
4.6 M
>       replacing  kernel-headers.x86_64 3.10.0-957.21.3.el7
>
> Transaction Summary
>
===============================================================================>
Install  3 Packages
>
> There, the compiled kernel-headers package (4.19.37_sentinel_custom-1) is
about to replace stock version
> (3.10.0-957.21.3.el7). Is it safe to continue installing from compiled RPM
package above, or install kernel manually?
In general, you want to keep the distro's kernel-headers unless you
also plan to play with glibc. You may find the following article
useful:

https://kernelnewbies.org/KernelHeaders

Akemi

On 26/06/19 23.51, Akemi Yagi wrote:
> On Wed, Jun 26, 2019 at 5:20 AM Bagas Sanjaya <bagasdotme at
gmail.com> wrote:
>> Hello CentOS users,
>>
>> Currently I have compiled kernel version 4.19.37, which the source is
from kernel.org. I compiled the kernel by following
>> steps:
>> - get the kernel tarball and unpack it
>> - install prerequisties as described in
https://wiki.centos.org/HowTos/Custom_Kernel (in addition bc and openssl-devel)
>> - copy the kernel configuration:
>>     $ cp /boot/config-3.10.0-957.21.3.el7.x86_64
~/linux-4.19.37/.config
>> - create configuration:
>>     $ cd ~/linux-4.19.37
>>     $ make olddefconfig
>>     $ make nconfig
>> - compile and create RPM package:
>>     $ make vmlinux
>>     $ make modules
>>     $ make rpm-pkg
>> - install kernel RPM:
>>     # yum install ~/rpmbuild/RPMS/x86_64/kernel-*.rpm
>>
>> However, in the last step (installing kernel RPM), I got following
notice:
>>
===============================================================================>>
Package        Arch   Version
>>                            Repository                                  
Size
>>
===============================================================================>>
Installing:
>>    kernel         x86_64 4.19.37_sentinel_custom-1
>>                            /kernel-4.19.37_sentinel_custom-1.x86_64    
209 M
>>    kernel-devel   x86_64 4.19.37_sentinel_custom-1
>>                           
/kernel-devel-4.19.37_sentinel_custom-1.x86_64   817 M
>>    kernel-headers x86_64 4.19.37_sentinel_custom-1
>>                           
/kernel-headers-4.19.37_sentinel_custom-1.x86_64 4.6 M
>>        replacing  kernel-headers.x86_64 3.10.0-957.21.3.el7
>>
>> Transaction Summary
>>
===============================================================================>>
Install  3 Packages
>>
>> There, the compiled kernel-headers package (4.19.37_sentinel_custom-1)
is about to replace stock version
>> (3.10.0-957.21.3.el7). Is it safe to continue installing from compiled
RPM package above, or install kernel manually?
> In general, you want to keep the distro's kernel-headers unless you
> also plan to play with glibc. You may find the following article
> useful:
>
> https://kernelnewbies.org/KernelHeaders
>
> Akemi
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos
So is it safe to install kernel RPMs generated by compilation from kernel.org
tarball, or should I stick to manual
install?