[ceph-users] MON quorum a single point of failure?

2013-06-20 Thread Bo
Howdy! Loving working with ceph; learning a lot. :) I am curious about the quorum process because I seem to get conflicting information from experts. Those that I report to need a clear answer from me which I am currently unable to give. Ceph needs an odd number of monitors in any given cluster

Re: [ceph-users] MON quorum a single point of failure?

2013-06-20 Thread Mike Lowe
Quorum means you need at least %51 participating be it people following parliamentary procedures or mons in ceph. With one dead and two up you have %66 participating or enough to have a quorum. An even number doesn't get you any additional safety but does give you one more thing than can fail

Re: [ceph-users] MON quorum a single point of failure?

2013-06-20 Thread Sage Weil
On Thu, 20 Jun 2013, Bo wrote: Howdy! Loving working with ceph; learning a lot. :) I am curious about the quorum process because I seem to get conflicting information from experts. Those that I report to need a clear answer from me which I am currently unable to give. Ceph needs an odd

Re: [ceph-users] MON quorum a single point of failure?

2013-06-20 Thread Gregory Farnum
On Thursday, June 20, 2013, Bo wrote: Howdy! Loving working with ceph; learning a lot. :) I am curious about the quorum process because I seem to get conflicting information from experts. Those that I report to need a clear answer from me which I am currently unable to give. Ceph needs

Re: [ceph-users] MON quorum a single point of failure?

2013-06-20 Thread Bo
Thank you, Mike Sage and Greg. Completely different than everything I had heard or read. Clears it all up. :) Gracias, -bo On Thu, Jun 20, 2013 at 11:15 AM, Gregory Farnum g...@inktank.com wrote: On Thursday, June 20, 2013, Bo wrote: Howdy! Loving working with ceph; learning a lot.