Using LEAPP to migrate hosts from rhel7 to rhel8 on AZure; after boot, networking fails; cannot get IP using DHCP. Hints to fix?

Question

Using LEAPP to migrate hosts from rhel7 to rhel8 on AZure; after boot, networking fails; cannot get IP using DHCP. Hints to fix?

H. U.F. Campbell 0

Am on Azure Cloud; we have numerous rhel7 hosts; RedHat offers a LEAPP migrator script that updates hosts to the next major OS level (e.g. rhel7 to rhel8)

Script ran fine, but rebooted host cannot get IP; no change for MAC addr.

Anyone encountered this before and have any hints of how to troubleshoot? Usual debuging not working. (yet)]

tx.!

Akshay kumar Mandha 3,390 Reputation points Microsoft External Staff Moderator

2025-03-07T04:01:34.7133333+00:00

Hi H. U.F. Campbell,
We are looking into query Using LEAPP to migrate hosts from rhel7 to rhel8 on AZure; after boot, networking fails; cannot get IP using DHCP and will update you on this soon

1 answer

Your answer

Akshay kumar Mandha 3,390 Reputation points Microsoft External Staff Moderator

2025-03-07T04:01:34.7133333+00:00

Hi H. U.F. Campbell,
We are looking into query Using LEAPP to migrate hosts from rhel7 to rhel8 on AZure; after boot, networking fails; cannot get IP using DHCP and will update you on this soon

Answer 1

Akshay kumar Mandha 3,390 Microsoft External Staff Moderator

Hi H. U.F. Campbell,
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here
regarding the network issue you're experiencing after upgrading from RHEL 7 to RHEL 8 using the LEAPP migrator script.

Please check the pre-requisites while upgrading & refer below document for more details
https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/linux/troubleshoot-red-hat-os-upgrade-issues
https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/linux/leapp-upgrade-process-rhel-7-and-8?tabs=rhel7-rhel8

If you found this information helpful and my inputs, please click an accepting the answer and don't forget to "Upvote" on my post for other community members reference User's image

H. U.F. Campbell 0 Reputation points

2025-03-07T20:08:33.7966667+00:00

INTERIM details:

Contacted RHEL support:

turns out the IP and route are not being set, so added manually (ip cmds).

This allows login to host using ssh, but cannot run yum check-update or ssh from host.
H. U.F. Campbell 0 Reputation points

2025-03-07T20:11:07.5033333+00:00

Link to adding IP:

https://access.redhat.com/solutions/2626631
Akshay kumar Mandha 3,390 Reputation points Microsoft External Staff Moderator

2025-03-10T01:55:09.8966667+00:00

Hi H. U.F. Campbell,
I have noticed our answer is not helpful thank you sharing you feedback and providing inputs & will update you on this.
Akshay kumar Mandha 3,390 Reputation points Microsoft External Staff Moderator

2025-03-10T09:51:04.7466667+00:00

Hi H. U.F. Campbell,
After adding Ip manually is that issue resolve now? right now which issue you are facing saying what you are trying to check yum check-update or ssh from host. Could you please elaborate little bit
Thank you.!
Akshay kumar Mandha 3,390 Reputation points Microsoft External Staff Moderator

2025-03-11T09:02:43.3966667+00:00

Hi H. U.F. Campbell,
Just checking to see on my previous response any update please let me know

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Using LEAPP to migrate hosts from rhel7 to rhel8 on AZure; after boot, networking fails; cannot get IP using DHCP. Hints to fix?

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