When running the CCMDB 7.1.1 installer from a Windows system to install the code on a UNIX/Linux box (since the installer only runs on Windows, this is what you have to do if your server is UNIX/Linux), you may encounter the error:
CTGIN2381E: Maximo Database upgrade command failed
It turns out that this error message can be caused by lots of different issues, so the text of the error itself isn't necessarily very helpful. In my case, I found that the error was occurring because of an exception being thrown in the middle of the nodeSync() function of the DeploymentManager.py script (that is installed on your Windows deployment machine when you run the CCMDB installer). And what I found is that it just needed a sleep statement to allow the node manager to come up successfully. So the line I added (immediately after the "try:" statement at line 115) was:
This causes it to sleep for 30 seconds. You can probably set this timeout to a smaller value (esp. since the nodeSync() function is actually called quite a few times during the install), but 30 seconds worked perfectly for me.