How to change DSCP value of Skinny KeepAliveMessage
Code Yellow means your CPU is pegging at high percentage which would not be caused by missed keepalives, TAC should be able to determine what caused CPU pegging from CUCM SDI logs. Typically I've seen this with either call routing loop (not IP routing) or CUCM bugs.
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.