This is confusing. So how does a database that spans multiple nodes gets 
replicated?
 
> From: [email protected]
> Date: Tue, 6 Sep 2016 15:55:00 -0700
> Subject: Re: Adding a node to cluster
> To: [email protected]
> 
> Nodes in the cluster do not replicate to one another.
> 
> Replication takes place between databases. A single node isn't a
> database; a clustered database spans multiple nodes.
> 
> Each node has a black-box lump of data that happens to have a fraction
> of a database inside, but that's an implementation detail. It's the
> wrong level of abstraction to work with.
> 
> On Tue, Sep 6, 2016 at 1:52 PM, Joey Samonte
> <[email protected]> wrote:
> > If you have two nodes in the cluster, the replication should be two-way 
> > between the nodes?
> > What if there are three nodes? How should the replication be setup between 
> > them?
> >
> >> Subject: Re: Adding a node to cluster
> >> From: [email protected]
> >> Date: Mon, 5 Sep 2016 23:08:04 +0200
> >> To: [email protected]
> >>
> >> Hi,
> >>
> >> clustering and replication are indeed two (very) separate things - and you 
> >> won't get a Cluster by setting up replication. Again: treat the two as 
> >> separate. Clustering turns several shards (on several nodes) into one 
> >> database (from an user/caller perspective) while replication happens 
> >> _between_ databases.
> >> Consequently, technical underpinnings differ as well, as Bob explained 
> >> below.
> >>
> >> Hope that gets things in perspective a little...
> >>
> >> Best
> >>   Sebastian
> >>
> >> Von meinem iPhone gesendet
> >>
> >> > Am 05.09.2016 um 22:47 schrieb Joey Samonte 
> >> > <[email protected]>:
> >> >
> >> > Does this mean that setting up replication is separate from setting up 
> >> > clustering?
> >> >
> >> > Does replication needs to be bi-directional between nodes?
> >> >
> >> >> From: [email protected]
> >> >> Subject: Re: Adding a node to cluster
> >> >> Date: Thu, 25 Aug 2016 11:10:45 +0100
> >> >> To: [email protected]
> >> >>
> >> >> Ok, seems I've confused you.
> >> >>
> >> >> Couchdb replication occurs over http or https, as you know. The nodes 
> >> >> in a couchdb 2.0 cluster do not communicate with each other over http. 
> >> >> They use Erlang rpc. Erlang rpc can be configured for TLS encryption.  
> >> >> It's in the Erlang faq and is fairly simple to set up in newer Erlang 
> >> >> releases.
> >> >>
> >> >> I feel I owe an example of 2.0 cluster that exclusively uses TLS for 
> >> >> all communications.
> >> >>
> >> >> Sent from my iPhone
> >> >>
> >> >>> On 24 Aug 2016, at 20:47, Joey Samonte <[email protected]> 
> >> >>> wrote:
> >> >>>
> >> >>> What if we remove the reverse proxy and just set up the CouchDB nodes 
> >> >>> to allow only SSL connections, port 6984? 
> >> >>> https://wiki.apache.org/couchdb/How_to_enable_SSL
> >> >>>
> >> >>>> Subject: Re: Adding a node to cluster
> >> >>>> From: [email protected]
> >> >>>> Date: Wed, 24 Aug 2016 19:43:51 +0100
> >> >>>> To: [email protected]
> >> >>>>
> >> >>>> Assuming you mean a 2.0 cluster, no, all those nodes need to be able 
> >> >>>> to communicate with erlang rpc (service discovery over port 4369 and 
> >> >>>> then whatever port the node is running ong).
> >> >>>>
> >> >>>>> On 24 Aug 2016, at 12:36, Joey Samonte <[email protected]> 
> >> >>>>> wrote:
> >> >>>>>
> >> >>>>> Good day,
> >> >>>>>
> >> >>>>> Is it possible to add a node to a cluster from Fauxton if the remote 
> >> >>>>> host is behind a reverse proxy (nginx) configured as HTTPS?
> >> >>>>>
> >> >>>>> Regards,
> >> >>>>> Joey
> >> >
> >
                                          

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