> On 12 Jul 2012, Brian Candler wrote: > > On Thu, Jul 12, 2012 at 07:38:18AM +0000, Stefan Schloesser wrote: > > > The reason for the ip switch is the apache: if one fails the other > > > should take other the workload and continue operation, this is done > > > via the ip switch. > > > > Then that's just switching the public IP which apache listens on, and > > is nothing to do with glusterfs. Both servers can have the glusterfs > > volume mounted all the time. > > As Brian said, the shared IP here for Apache is independent of > Gluster in this particular configuration. I would recommend something > lightweight like UCARP so you can avoid running any of the Linux cluster stack > pieces: > --- > http://www.pureftpd.org/project/ucarp > > You're already attempting to avoid the cluster stuff anyway and keep > things simple by using Gluster. No point in adding all the HA bloat now just to > balance an IP address. And UCARP can do that for you! And don't forget to > give a nod to the OpenBSD developers who make such wonderful > technology in the first place. > Yeah - exactly "HA bloat" is my line of thinking. Though the man page to ucarp is somewhat limited ... :-( It seems to be the right direction, monitor ip and trigger a script if something happens. Though it won't note e.g. a crash of apache, will it? Just pinging a machine is maybe somewhat too limited ... or am I missing something here? Which unfortunately brings me back to "HA bloat". Stefan
