Can I add 4.1 esx node to an existing 4.0u2 cluster?
Will vcenter 4.0 u2 be able to manage the mixed cluster?
any other issues?
You must use vCenter 4.1 to manage 4.1 hosts. vCenter 4.1 can manage 4.0 hosts.
but upgrading vcenter to 4.1 will break view composer right?
Yes, you will have to wait for View 4.5 in this case.
André
You are correct.
Note that also with 4.0 U2 you have some issue with View (that is shipped with U1):
http://kb.vmware.com/kb/1022830
Andre