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Upgrade Guide for RedHat OS

Ensures your ServiceOps environment remains secure and supported by running on an up-to-date operating system.

This guide provides step-by-step instructions to upgrade the RedHat operating system from version 9.2 to 9.6 on your ServiceOps server.

info
  • This upgrade is for a minor version only (within RHEL 9.x).
  • Ensure all prerequisites are met before initiating the upgrade to avoid data loss or service disruption.

Prerequisites​

  • Internet connection: Required for connecting to RedHat repositories and downloading packages.
  • Active RedHat subscription: Needed to access RedHat repositories and perform the upgrade.

Pre-Upgrade Checklist​

Do NOT start the OS upgrade unless the following backups are completed:

  1. Snapshot backup of ServiceOps server VM.
  2. Full database backup stored in a separate location.
  3. Complete backup of ServiceOps application folders.

Procedure​

1. Verify Current OS Version​

Run the following command to check your current OS version:

cat /etc/os-release

2. Check Current Release Set​

Use the subscription manager to see if a specific release is already set:

sudo subscription-manager release

3. List Available Minor Versions​

If a release is not set, list available minor versions:

subscription-manager release --list

Look for the desired version (for example, 9.6) in the output.

4. Set Target Release Version​

Set the release version to the desired minor version using:

Syntax: sudo subscription-manager release --set VERSION

Example: sudo subscription-manager release --set 9.6

5. Verify Release Setting​

Confirm that the release is now set to 9.6:

sudo subscription-manager release

6. Start the Upgrade​

Run the following command to start upgrading your OS packages:

dnf update

This may take some time depending on your Internet speed and system performance.

When prompted, type y and press Enter to continue.

The following screen appears:

7. Post-Upgrade Verification​

After completion, verify that the upgrade was successful:

cat /etc/os-release

Ensure it now reflects 9.6.

8. Post-Upgrade Checklist​

  1. Verify that all critical services are running.
  2. Check application logs for any anomalies.
  3. Test that the ServiceOps application and database are fully operational.

The upgrade from RedHat 9.2 to 9.6 is now complete.