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How to Check Appliance Console During Boot

Sometimes, for example when creating new Linux appliance, that appliance fails to start without indicating reason of failure. In such case it can be useful to check the console of the appliance while it boots, because the reason of failure may be displayed there. Here is how to do it:

Simplest Method

• ssh to grid controller, start application and type "3t comp list <application_name>" - this will show component name of the failing appliance
• Type "3t comp login <application_name:component_name> console=text" - this should show the appliance's console

Alternative Method:

• ssh to BFC and to grid controller
• On grid controller start the application and type "3t comp list <application_name>" - this should show on which server the failing appliance is running.
• Type "3t server info <server_name_from_step_2> | grep Private" - this will show IP address of server on which the appliance is running (this should be of the form "192.168.gridID.srv#")
• On BFC type "ssh <IP_from_step_3>"; then type "xm list" - this should display the name and ID of the application
• Type "xm console <application_ID_from_step_4>" - this should show the appliance's console.