Upgrade Splunk UBA prerequisites and overview

Splunk UBA 5.0.4.1 requires Splunk UBA 5.0.4. See How to install or upgrade to this release of Splunk UBA for upgrade path information.

Upgrade prerequisites

Before you upgrade, perform the following tasks:

In RHEL Linux environments:
- Ensure that Splunk UBA has access to RHEL repositories.
- Review the External dependencies affected by this upgrade in the Release Notes.
Review the Known issues for this release in the Release Notes.
The software update includes two archive files approximately 230MB and 250MB in size. The total extracted size is approximately 500MB in size. Verify that you have enough free space in /home/caspida to store the downloaded the extracted installer files.
Backup your system.
- Configure automated full and incremental backups without stopping Splunk UBA. See Prepare automated incremental backups in Splunk UBA in Administer Splunk User Behavior Analytics.
- Stop Splunk UBA and perform a full offline backup. See Perform a full backup before upgrading or migrating Splunk UBA in Administer Splunk User Behavior Analytics.
Make sure your system is running normally by using the uba_health_check.sh shell script.
```
/opt/caspida/bin/utils/uba_health_check.sh
```
See Check system status before and after installation for more information about the script.

After satisfying the prerequisite requirements, go to one of the following: