Just ran into a customer running CUCM 9.1.2 where I was tasked with adding another subscriber to the cluster. Good fun with a new C240 chassis, and all things went as planned until I found I could not install VMware tools on the server.
Given it's version 9, I first tried the simple method to install from the vSphere client. Normally you can right-click the guest server and choose
Guest | Install / Upgrade VMware tools. My experience is this is typically a 30 second process, but after a couple minutes I felt it was failing and cancelled the install from the same menu.
I was able to edit the server properties through the vSphere client and under the Advanced section, checked the
Check and upgrade Tools during power cycling option, but I wasn't in the mood to wait for a graceful restart, nor interupt any services.
Instead, I SSH'd to the server and ran "
utils os secure permissive". This basically stops the CUCM firewall.
I then tried the install via the vSphere client and boom, 30 seconds or so later they are installed an up to date.
Then, for good measure ran "
utils os secure enforce" to re-enable the firewall.
Good one.
For your install options per app and version, see:
http://docwiki.cisco.com/wiki/VMware_Tools
For a similar thread and my inspiration, see:
https://supportforums.cisco.com/discussion/12274396/cucm-105-vmware-tools