On 06/07/2018 10:56 AM, Kevin Olbrich wrote: > Realy? > > I always thought that splitting the replication network is best practice. > Keeping everything in the same IPv6 network is much easier. > No, there is no big benefit unless your usecase (which 99% isn't) asks for it. Keep it simple, one network to run the cluster on. Less components which can fail or complicate things. Wido > Thank you. > > Kevin > > 2018-06-07 10:44 GMT+02:00 Wido den Hollander <wido@xxxxxxxx > <mailto:wido@xxxxxxxx>>: > > > > On 06/07/2018 09:46 AM, Kevin Olbrich wrote: > > Hi! > > > > When we installed our new luminous cluster, we had issues with the > > cluster network (setup of mon's failed). > > We moved on with a single network setup. > > > > Now I would like to set the cluster network again but the cluster is in > > use (4 nodes, 2 pools, VMs). > > Why? What is the benefit from having the cluster network? Back in the > old days when 10Gb was expensive you would run public on 1G and cluster > on 10G. > > Now with 2x10Gb going into each machine, why still bother with managing > two networks? > > I really do not see the benefit. > > I manage multiple 1000 ~ 2500 OSD clusters all running with all their > nodes on IPv6 and 2x10Gb in a single network. That works just fine. > > Try to keep the network simple and do not overcomplicate it. > > Wido > > > What happens if I set the cluster network on one of the nodes and reboot > > (maintenance, updates, etc.)? > > Will the node use both networks as the other three nodes are not > > reachable there? > > > > Both the MONs and OSDs have IPs in both networks, routing is not needed. > > This cluster is dualstack but we set ms_bind_ipv6 = true. > > > > Thank you. > > > > Kind regards > > Kevin > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx> > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com> > > > > > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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