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From Raúl Gutiérrez Segalés <...@itevenworks.net>
Subject Re: Observer node config question
Date Mon, 07 Dec 2015 04:41:48 GMT

On 6 December 2015 at 20:36, Jason Rosenberg <jbr@squareup.com> wrote:

> Hello,
> Is it necessary for all observer nodes to be specified in the configuration
> of all other nodes in the cluster?

You can get away by using id=-1 for observers (in 3.4.x).

> Or is it ok for the core voting nodes to just know about each other, and
> allow observer nodes to come and go without requiring updates to the voting
> nodes' configuration?
> I am currently using 3.4.6 (perhaps the answer to this changes with 3.5.X,
> since it allows dynamic ensembles?).

I think it does, you need to call reconfig() before adding new observers
they'll join as learners (followers) (something that we might want to


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