Upgrade path - RHEL 8.2 to RHEL 9.3

[r_upendar]

Hi,

Could anyone give some insight on what is the right upgrade(inplace) path - from RHEL8.2 to RHEL9.3.

Thanks

Upendar

[Wasim_Raja · Accepted solution]

@r_upendar Thanks for reaching out.

You can refer the links, they should help you with your requirements.

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html-single/upgrading_from_...

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/upgrading_from_rhel_8_...

Regards,

Wasim

[Scott · Accepted solution]

You won't be able to direclty upgrade from 8.2 to 9.3.  To use the leapp tool, you'll first have to update your RHEL8 system to current.  So your path looks more like:
8.2 -> 8.9 (using dnf update)
8.9 -> 9.3 (using leapp)

[Wasim_Raja]

@Scott Thank you for sharing!!

[Chetan_Tiwary_]

Thanks @Scott +1 

[Chetan_Tiwary_ · Accepted solution]

@r_upendar Thanks for reaching out !

Currently, it is possible to perform an in-place upgrade from the following source RHEL 8 minor versions to the following target RHEL 9 minor versions:

As @Scott mentioned use leapp tool to upgrade from RHEL 8.9 to RHEL 9.3 

Refer here for the same : https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/upgrading_from_rhel_8_... 

For upgrading RHEL 8.2 to RHEL 8.9 use dnf tool to upgrade it ( Don forget to use dnf versionlock clear to clear the specific package version  lock , if used earlier ).

[r_upendar · Accepted solution]

Thank you so much @Wasim_Raja  @Scott @Chetan_Tiwary_ .

When an attempt was made to upgrade the minor version from RHEL 8.2 to 8.8 and while doing the dnf update, the update process was stuck at the stage: "Running scriptlet: systemd-239-74.el8_8.x86_64". When the system is rebooted, the boot process was freezed at systemd and  we see errors similar to the following on the console:

systemd[1]: Freezing execution

The advisory: https://access.redhat.com/errata/RHSA-2020:5608 helped resolve the issue.

[Chetan_Tiwary_]

@r_upendar Glad to hear that!

[Scott · Accepted solution]

If you update less frequently, there's a lot less likelihood that you'll run into an issue like this.  Red Hat does a TON of testing to ensure upgrading to a new minor-release is smooth from the previous minor release, e.g. 8.2->8.3 or 8.3->8.4 

We also do alot of testing to ensure that upgrades between Extended Update Releases (EUS) goes smoothly, e.g. 8.2->8.4 or 8.4->8.6

However, we really don't do testing for large gaps of minor release updates, like in your case 8.2->8.8.  Building more frequent updates into your practices, or using EUS (included in x86_64 RHEL premium subs) to stay on releases for up to 2 years, then upgrading to the next EUS release, even numbered minor releases, will drastically reduce the chances for unaccounted for weirdness when applying updates to your machines.

-STM

[r_upendar]

While doing the major version upgrade from RHEL 8.10 to RHEL 9.4 using the leap upgrade utility, it has hit the errors reported below:

And while doing the major version upgrade using the leap upgrade, it's throwing a different error, now as reported in https://access.redhat.com/discussions/7049671. Could you please help upgrade the major ver

2024-10-15 00:20:25.550 ERROR    PID: 32385 leapp.workflow.TargetTransactionFactsCollection: Actor target_userspace_creator has crashed: Traceback

(most recent call last):

 File "/usr/lib/python3.6/site-packages/leapp/repository/actor_definition.py", line 74, in _do_run

   actor_instance.run(*args, **kwargs)

 File "/usr/lib/python3.6/site-packages/leapp/actors/__init__.py", line 289, in run

   self.process(*args)

 File "/etc/leapp/repos.d/system_upgrade/common/actors/targetuserspacecreator/actor.py", line 58, in process

   userspacegen.perform()

 File "/usr/lib/python3.6/site-packages/leapp/utils/deprecation.py", line 42, in process_wrapper

   return target_item(*args, **kwargs)

 File "/etc/leapp/repos.d/system_upgrade/common/actors/targetuserspacecreator/libraries/userspacegen.py", line 1246, in perform

   _create_target_userspace(context, indata, indata.packages, indata.files, target_repoids)

 File "/etc/leapp/repos.d/system_upgrade/common/actors/targetuserspacecreator/libraries/userspacegen.py", line 1108, in _create_target_userspace

   _prep_repository_access(context, target_path)

 File "/etc/leapp/repos.d/system_upgrade/common/actors/targetuserspacecreator/libraries/userspacegen.py", line 629, in _prep_repository_access

   run(["chroot", target_userspace, "/bin/bash", "-c", "su - -c update-ca-trust"])

 File "/usr/lib/python3.6/site-packages/leapp/libraries/stdlib/__init__.py", line 192, in run

   result=result

leapp.libraries.stdlib.CalledProcessError: Command ['chroot', '/var/lib/leapp/el9userspace', '/bin/bash', '-c', 'su - -c update-ca-trust'] failed with exit code 127.

https://access.redhat.com/discussions/7049671