I've got a CallManager publisher with 1GB of RAM. I am seeing memory usage where there is only between 12MB and 17MB of free physical memory. It does not seem to be growing so I do not think there is a memory leak but it made me wonder how little memory could be available before I should start getting concerned. This publisher is in a three-server cluster with about 1500 phones and all phones are registered to the two subscribers. Does anybody know the point at which memory usage would be cause for concern?
I guess this evaluation can be a bit subjective. Since you said, it is not increasing and if your network is pretty stable (no frequent or impending changes), then I guess you can spare your budget and make do with what you have. But if you intend doing something extra (adding more phones, adding additional services etc.), then maybe you should upgrade ASAP.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.