Chapter 5. Verifying the post-upgrade state of the RHEL 8 system
This procedure lists steps recommended to perform after an in-place upgrade to RHEL 8.
- The system has been upgraded following the steps described in Performing the upgrade from RHEL 7 to RHEL 8 and you have been able to log in to RHEL 8.
After the upgrade completes, determine whether the system is in the required state, at least:
Verify that the current OS version is Red Hat Enterprise Linux 8:
# cat /etc/redhat-release Red Hat Enterprise Linux release 8.2 (Ootpa)
Check the OS kernel version:
# uname -r 4.18.0-193.el8.x86_64
If you are using the Red Hat Subscription Manager:
Verify that the correct product is installed:
# subscription-manager list --installed +-----------------------------------------+ Installed Product Status +-----------------------------------------+ Product Name: Red Hat Enterprise Linux for x86_64 Product ID: 479 Version: 8.2 Arch: x86_64 Status: Subscribed
Verify that the release version is set to 8.2 immediately after the upgrade:
# subscription-manager release Release: 8.2
Ensure your system remains supported after the in-place upgrade. With the general availability of RHEL 8.3, update your system either to RHEL 8.3 or to RHEL 8.2 Extended Update Support (EUS).
Update the system to RHEL 8.3:
Unset Red Hat Subscription Manager to consume the latest RHEL 8.3 content:
# subscription-manager release --unset
Update your system to the latest RHEL 8.3 version:
# yum update
Update the system to RHEL 8.2 EUS:
Enable RHEL 8 EUS repositories:
# subscription-manager repos --enable repository_id1 --enable repository_id2 …
Replace repository_id* with IDs of EUS repositories available with your subscription. Enable at least the BaseOS and AppStream repositories. For example, on the Intel 64 architecture:
# subscription-manager repos --enable rhel-8-for-x86_64-baseos-eus-rpms --enable rhel-8-for-x86_64-appstream-eus-rpms
Update your system to the latest RHEL 8.2.EUS version
# yum update
- Verify that network services are operational, for example, try to connect to a server using SSH.
- Check the post-upgrade status of your applications. In some cases, you may need to perform migration and configuration changes manually. For example, to migrate your databases, follow instructions in RHEL 8 Database servers documentation.