New Sametime 8.5 document released aimed at SMBs

A new document “Deploying a scalable IBM Lotus Sametime 8.5.1 environment for small-to-medium businesses” was released recently written by Andy Yiu.

The document is extremely useful and most importantly has the following paragraph.

“In Lotus Sametime 8.5, certain configuration limitations prevented multiple nodes of different component types from being installed on the same server. These limitations in node-based installations have been corrected for all components, allowing multiple components to coexist on the same server without the limitations for clustering and management of a cell installation.”

The fact that with version 8.5.1 you can install multiple components on the same server is a god send because it made no sense as to why with earlier releases you had to install a cell for each component. This means that multiple primary nodes can be installed on the same server and federated to the SSC removing the overhead of multiple deployment managers and various cells.

I wish this nugget of information was available some time ago or if it was I wish I had stumbled across it sooner.

Meeting federation/clustering fails with multiple IPs

I was asked to visit a customer who was having problems federating a primary node (Meeting server) with the SSC. They had some other problems as well which meant that I thought it was best to uninstall, clean up and reinstall.

After the two Meeting servers were reinstalled I hit the same problem when trying to federate the primary node. I looked in the addnode.log and noticed an error with an exception, unfortunately I didn’t take a note of the error but the crux of it was that during the addnode process the IP address the DM was resolving for the PN was incorrect.

Looking at the Windows 2008 server I noticed that it had two NICs, a primary and a management LAN. I added host file entries for the SSC and the two Meeting servers to all three servers after which federation worked fine.

I do not know why WAS picked the management IP, there is probably an algorithm it uses to decide but it is wise to be mindful of this if installing on a server with multiple IPs.