Realy?
I always thought that splitting the replication network is best practice.
Keeping everything in the same IPv6 network is much easier.
Thank you.
Kevin
2018-06-07 10:44 GMT+02:00 Wido den Hollander <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
>
>
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