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From Abraham Fine <af...@apache.org>
Subject Re: Connection Factories for Curator / Zookeeper / HTTP Tunneling
Date Thu, 08 Mar 2018 19:33:57 GMT
Hi Chris-

Wouldn't it also be posssible to make use of an external tunneling tool without modifying
ZooKeeper at all?

Abe


On Sun, Mar 4, 2018, at 11:58, Chris Miles wrote:
> Thanks Mark. 
> 
> I've only had a glance at the code around the server connection factory, 
> and the fact there is a netty one there seems like a good sign as there 
> are some generic netty http tunnel examples out there. 
> 
> If there's anything you can suggest as a starter for ten, I'd be appreciated. 
> 
> Thanks
> 
> Chris 
> 
> Sent from my iPhone
> 
> > On 4 Mar 2018, at 11:40, Mark Fenes <mfenes@cloudera.com> wrote:
> > 
> > 
> > Hi Chris,
> > 
> > yes, ports 2888 and 3888 are the default ports for quorum communication and leader
election.
> > By default, ZK uses NIOServerCnxnFactory, unless the zookeeper.serverCnxnFactory
system property is set to a different connection factory (e.g. Netty).
> > 
> > So, you would like to configure and run the ZooKeeper server instances so that the
quorum communication and leader election would also take place on the HTTP port via tunnelling?
> > Let me check this as I need to do further research to answer this question.
> > 
> > And yes, should ZK not have this functionality, we would be very thankful for your
willingness to contribute to the source code.
> > 
> > Regards,
> > Mark
> > 
> > 
> >> On Sat, Mar 3, 2018 at 3:34 PM, Chris Miles <chris@chrismiles.org> wrote:
> >> 
> >> Firstly, I apologise for the cross post, but I think this is a question
> >> which may need to be seen by both users, and devs who understand the
> >> underlying code.
> >> 
> >> I need to deploy Zookeeper to a firewall restricted cloud-foundry cloud,
> >> where the only communication can happen between nodes is through HTTP,
> >> so I am looking at ways of getting ZooKeeper communicating through HTTP
> >> tunnelling.
> >> 
> >> As far as I can determine, ZooKeeper only allows the configuring of the
> >> main client connection via server and client connection factories, but
> >> not for the 2888 and 3888 connectivity, which is I think ((correct me if
> >> wrong)) node to node communication on the first one, and leader election
> >> on the second?
> >> 
> >> Does Zookeeper's connection handling give me any ability to intercept and
> >> wrap the connections used for the rest of these ports? (Netty Http Tunnel).
> >> 
> >> I am willing to contribute to the source to get this functionality if required
> >> as this is currently our only way of getting Zookeeper on our cloud.
> >> 
> >> thanks
> >> 
> >> Chris
> >> 
> >> 
> >> 
> > 

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