Last week we had to upgrade a vRealize Log Insight appliance which resulted time after time in a meaningless error.

After some general troubleshooting we ended up trying to update the appliance from the command line instead of using the GUI. There the error message did point us in the direction of the root file system where we got the message that we needed 16K of free space.

Upgrading from the command line can be done by using the following VMware KB article: https://kb.vmware.com/s/article/83225

Example: /usr/lib/loginsight/application/sbin/loginsight-pak-upgrade.py /tmp/VMware-vRealize-Log-Insight-8.3.0-17494646.pak

The issue with the root partition being full has its own VMware KB article: https://kb.vmware.com/s/article/82170

After applying the KB and resolving the issues with the log rotation the update went flawlessly.