On Fri, Jan 09, 2015 at 09:15:39AM +0800, Lingxian Kong wrote: > There is an excellent post describing this, for your information: > http://blog.oddbit.com/2014/12/22/accessing-the-serial-console-of-your-nova-servers/ Good reference, you can also get some information here: https://review.openstack.org/#/c/132269/ > 2015-01-07 22:38 GMT+08:00 Markus Zoeller <mzoeller at de.ibm.com>: > > The blueprint "serial-ports" introduced a serial console connection > > to an instance via websocket. I'm wondering > > * why enabling the serial console *replaces* writing into log file ? > > * how one is supposed to retrieve the boot messages *before* one connects? The good point of using serial console is that you can create with a few lines of python an interactive console to debug your virtual machine. s.