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: > > > > > > Uh? How should this be handled by the RA? Can you elaborate? > > > > For instance, using expect to wait for the login prompt on the > > > > console. Or, if that's possible, employing libvirt to get the > > > > current runlevel. We already discussed this. Your objection was > > > > that this won't work with the other OS. > > > Oh. This. No, this is inacceptable. > > I'm really curious to know why exactly. > > Exactly because of this - the need to parse console output, which is > very OS specific, and prone to break, and not all services that we > monitor may show up on the console at all. Getting more reliable metrics > would require instrumenting the guest (such as understanding the > runlevel it is at), and that is also a No-No. The idea is to be able to > run unmodified guests. > > > > 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 ;-) Thanks, Dejan > > Regards, > Lars > > -- > Architect Storage/HA > SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, > HRB 21284 (AG Nürnberg) > "Experience is the name everyone gives to their mistakes." -- Oscar Wilde > > > _______________________________________________ > 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
