well the story continues
After several posts about my failed attempt at simply changing the hostname and IP for my OS X Server – my final hurdle was logging into Server Preferences again.
Every time I tried I got the error : unable to set node credentials for ldapv3
So I returned to Server Admin and changed my open directory setting to ‘Standalone” from OD Master. This finally allowed me to gain access to the Server Preferences!
I then returned to OD and changed the server back to OD Master and viola everything was back to normal!
Phew! I won’t be doing that again in a hurry!