How to Update to a Previous Version of RHEL
Affected version: Ephesoft Transact 2020.1
Operating systems: Linux
Linux distributions: Red Hat Enterprise Linux (RHEL)
This article provides information on the two-part process of how to update your version of Red Hat Enterprise Linux to a supported previous release. Refer to Platform Configuration and Third-Party Integrations 2020.1 for more information on supported environments.
Note: Ephesoft Transact 2020.1 only supports RHEL 7.5 and 7.6.
Prerequisites
- You must have a fresh server of RHEL.
- You must be a root user.
Note: If you are not the root user, execute the following command:
sudo su root
Upgrade to Current Release
Perform these steps to upgrade to the latest version of RHEL. These instructions refer to RHEL 7.7 as the latest version.
- Verify your Linux kernel version:
uname -r
Sample output for RHEL 7.3:
3.10.0-514.21.2.el7.x86_64
- Update all packages with available updates:
yum update
- Reboot the server to complete the upgrade:
reboot
Note: You will be logged out upon reboot. Log back in to continue.
- Verify your updated Linux kernel version:
uname -r
Sample output for RHEL 7.7:
3.10.0-1062.9.1.el7x86_64
Downgrade to Supported Release
- Downgrade to an earlier version of RHEL:
yum downgrade redhat-release
Note: This will downgrade by one release version of RHEL. For example, if your current distribution is RHEL 7.7, it will take you to RHEL 7.6.
- Reboot the server to complete the downgrade:
reboot
Note: You will be logged out upon reboot. Log back in to continue.
- Verify the updated Linux kernel version:
uname -r
Sample output for RHEL 7.6:
3.10.0-957.el7.86_64
Note: If your kernel downgrade fails when downgrading to RHEL 7.6, repeat steps 5-7 to downgrade again to RHEL 7.5.
- Install the kernel version required to run RHEL 7.5 or 7.6:
yum install <kernel version>
Note: Check for the latest stable kernel version from Red Hat before upgrading. The following is an example command for RHEL 7.6:
yum install kernel-3.10.0-957.el7
- Reboot the server to complete the download:
reboot
- Verify your Linux version:
cat /etc/redhat-release
- Verify your Linux kernel version:
uname -r
You have successfully updated your Linux distribution to a supported previous version.
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