I recently upgraded an instance of vRA from 7.2 to 7.5 and rather than do it the manual way I used VMware’s vRealize LifeCycle Manager (version 2.0 update 3).
Everything was going great and according to plan, the vRLCM pre-requisites checker made short work of all of the checks you need to do before you start an upgrade of vRA. You can see below vRLCM does a great job of keeping you informed of the current progress and in a really elegant way.
However! when it came to upgrading the IaaS servers, it failed and gave me this lovely error message.
While this error maybe clear to some for me it was not very helpful.
So I reverted upgrading the IaaS components manually and this was the more helpful error message I encountered.
Essentially what this all boils down to is that vRA -NEEDS- Java version 181. While the VMware documentation says 181 or later, (I had a slightly later version install on the IaaS server) the upgrade process just fails horribly.
So I removed JAVA from the IaaS server and installed specifically the 181 version and voila the manual upgrade was successful. Interestingly I did try the automatic upgrade via vRLCM after install Java 181 but it still failed.
Either way it is something to watch out for.