Hi Arnold, On Sun, Nov 11, 2012 at 07:37:29PM +0100, Arnold Krille wrote: > On Sun, 11 Nov 2012 18:37:04 +0100 Dejan Muhamedagic > <deja...@fastmail.fm> wrote: > > On Fri, Nov 09, 2012 at 05:22:08PM +0100, Lars Marowsky-Bree wrote: > > > On 2012-11-09T14:06:29, Dejan Muhamedagic <deja...@fastmail.fm> > > > wrote: > > > > > And also doesn't really help with getting the state/readiness of > > > > > services the guest might provide. > > > > Isn't it that one gets a login prompt only once the host reached a > > > > certain run level? > > > Services may start in the background. The console may either be > > > text, graphical, or network only. > > Hmm, I have yet to see a Linux/UNIX host without a console. And > > that means quite some time ;-) > > While (almost) all systems have some kind of console, not all systems > stay at a text-console during runtime.
It seems like you are mixing things up. This is not about watching a computer monitor. On Linux there's always a console tty. > If you want to watch a > linux-terminal-server, its not a text-console that is the primary > screen. > > And then watching the text-console for a login:-prompt tells you that > the machine is up. "Pressing" enter tells you that the login-process is > still answering. But that doesn't tell you whether the webserver on > that machine is still working correctly. That is not the point. > Its not even telling you if > the machine is reacting to network stuff. All it tells you is that some > kind of system is started. So its actually only a little more then > "virsh list |grep <machinename>" tells you. > > Imho watching the console for monitoring a machine is as useless as it > can get. It tells you that a host is at a certain runlevel. The host is ready for business, i.e. all other service at the particular runlevel have been started. Otherwise, it wouldn't make sense that it offers a login prompt. I don't know how it is with systemd, perhaps systemd functions differently. Whether a particular service is functioning properly or at all is up to the monitor resource to find out. Thanks, Dejan > Have fun, > > Arnold > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
