----- Original Message ----- > From: "Nicolas Sebrecht" <nsebrecht at piing.fr> > To: "gluster-users" <gluster-users at gluster.org> > Sent: Wednesday, June 27, 2012 3:06:30 AM > Subject: about HA infrastructure for hypervisors > > Hi, > > We are going to try glusterfs for our new HA servers. > > To get full HA, I'm thinking of building it this way: > > +----------------+ +----------------+ > | | | | > | KVM hypervisor |-----+ +-------| KVM hypervisor | > | | | | | | > +----------------+ | | +----------------+ > | | > +------+ > |switch| > +------+ > | | > +---------------+ | | +---------------+ > | | | | | | > | Glusterfs 3.3 |------+ +--------| Glusterfs 3.3 | > | server A | | server B | > | | | | > +---------------+ +---------------+ > > > The idea is to have HA if either one KVM hypervisor or one Glusterfs > server stop working (failure, maintenance, etc). > > Some points: > - We don't care much about duplicating the network (we're going to > have > spare materials only). > - Glusterfs servers will use gluster replication to get HA. > - Each Glusterfs server will have SSD disks in a RAID (1 or 10, I > guess). > - Most of the time, both KVM hypervisor will have VM running. > > 1. Is this a correct/typicall infrastructure? > > 2. We still didn't decide what physical network to choose between FC, > FCoE > and Infiniband. What would you suggest for both performance and easy > configuration? > > Is it possible to use FC or FCoE for a HA Glusterfs cluster? If so, > how > to configure Glusterfs nodes? > > 3. Would it be better to split the Glusterfs namespace into two > gluster > volumes (one for each hypervisor), each running on a Glusterfs server > (for the normal case where all servers are running)? > > > Thanks, > > -- > Nicolas Sebrecht Hi, If your switch breaks, you are done. Put each Gluster server on it's own switch. > +----------------+ +----------------+ > | | | | > | KVM hypervisor |---+ +-------| KVM hypervisor | > | | | | | | > +----------------+ | | +----------------+ > | | > +------+ +------+ > |switch| |switch| > +------+ +------+ > | | | | > +---------------+ | | | | +---------------+ > | | | | | +-----| | > | Glusterfs 3.3 |--+ +------)--------| Glusterfs 3.3 | > | server A | | | server B | > | |-----------+ | | > +---------------+ +---------------+
