Chaitanya Kulkarni wrote: > Thanks for your reply Chrissie. > > But is this, i.e. deployment of clusters with same name, a valid > scenario? How often (as in say 1 in a 100) may I see such deployments, > if at all? > Sorry, I really have no idea how many times you might see such deployments. How would I work it out?! Cluster names are chosen by the administrators ... those people are not easily predictable ;-) Chrissie > > On Mon, Mar 16, 2009 at 1:28 PM, Chrissie Caulfield <ccaulfie@xxxxxxxxxx > <mailto:ccaulfie@xxxxxxxxxx>> wrote: > > Chaitanya Kulkarni wrote: > > Hi All, > > > > What happens if in the same network, we try to create two clusters > with > > the same name? > > > > Does it cause any problem? > > YES LOTS! > > At best the two clusters will merge into one, at worst you will get node > evictions because of clashes between node IDs > > Actually you *can* do this if you change the cluster_id/multicast > address or port number in cluster.conf. But need to be careful and it is > not recommended. > > The main reason I say not to do this is that GFS volumes have the > cluster name embedded in the super block. If you have two clusters with > the same cluster name on the same SAN then it's going to be very easy to > totally corrupt the GFS filesystem by mounting it on two different > clusters. > > > Chrissie > -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
