[Openstack] [Swift] How to add a new node without ring copy?

Clay Gerrard clay.gerrard at gmail.com
Sun Jan 22 23:09:58 UTC 2017

I've heard of people using the seed feature of rebalance to try make it
repeatable enough to seem deterministic.

But I always found the idea bonkers.

Maybe just upload them into swift?  Let the provisioning of a new node
checkout the builders - add itself - rebalance - upload modified builder
and new rings. Always be having all the nodes download the newest ring on

Or a million other things not with the trying to have 100 nodes come up
with 1 and only 1 answer.


On Sun, Jan 22, 2017 at 4:12 AM Alexandr Porunov <alexandr.porunov at gmail.com>

> Hello,
> I read different articles about how to add a new node and they all says
> this:
> 1) Add a node to ring builder
> 2) Rebalance ring
> 3) Copy ring to each node.
> Is it possible to skip "copy" step by doing first and second step on each
> node? Will then all nodes have the same ring?
> I.e. I mean to do like this:
> 1) Add a node to the ring builder (Execute this step on each node)
> 2) Rebalance the ring (Execute this step on each node)
> Will the ring be the same or we still have to copy the ring from one node
> to all others?
> Best regards,
> Alexandr
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