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From Kaufman Ng <kauf...@confluent.io>
Subject Re: Kafka running on AWS - how to retain broker.id on new instance spun-up in-place of instance/broker failed
Date Thu, 15 Nov 2018 14:10:08 GMT
Srinivas,

You might want to check out the AWS best practices from this blog post:
https://www.confluent.io/blog/design-and-deployment-considerations-for-deploying-apache-kafka-on-aws/

Kafka broker ids by default are auto-generated, but you can also specify
values (in server.properties file). By having static broker ids, it's
easier to recover in general. The blog post above mentions it in more
details.

Good luck.

On Thu, Nov 15, 2018 at 8:09 AM amit pal <amit5624@gmail.com> wrote:

> If at all you were hell bent on doing this, you could use zookeeper to find
> out the health of current brokers along with their broker id. That should
> help re-spin/start the unhealthy instance with same instance id.
>
> On Thu, Nov 15, 2018 at 6:08 PM Srinivas Rapolu <cnu.text@gmail.com>
> wrote:
>
> > having all this stored in DB is getting too complicated, especially with
> > instance level storage and not EBS.
> >
> > I am sure there should be easy way to retain the old broker.id for new
> AWS
> > instance spun-up for auto replication.
> >
> > Any other ideas/help is appreciated.
> >
> > On Thu, Nov 15, 2018 at 2:27 AM Eno Thereska <eno.thereska@gmail.com>
> > wrote:
> >
> > > The general answer depends on what control plane software is taking
> care
> > of
> > > your Kafka deployment. You probably have a layer that launches Kafka
> > > instances and monitors their health, right? If so, that layer should
> take
> > > care of the mapping between instances and broker IDs and keep that in a
> > > table persisted somewhere (e.g., DynamoDB).
> > >
> > > Eno
> > >
> > > On Wed, Nov 14, 2018 at 7:38 PM Srinivas Rapolu <cnu.text@gmail.com>
> > > wrote:
> > >
> > > > EBS is one of the option. But we use instance level storage where we
> > > loose
> > > > all data as soon as we have a broker failed in AWS.
> > > >
> > > > In such scenario, anyone has better launch script or cofiguration can
> > be
> > > > executed on new broker to retain the old id not conflicting with
> > existing
> > > > broker ids.
> > > >
> > > > On Wed, Nov 14, 2018, 11:58 AM Andrey Dyachkov <
> > > andrey.dyachkov@gmail.com
> > > > wrote:
> > > >
> > > > > You can attach EBS volume, which will store data and metadata(e.g.
> > > broker
> > > > > id), and then attach it to the new AWS instance and start Kafka,
it
> > > will
> > > > > pick the broker id plus you won’t need to rebalance the cluster.
> > > > >
> > > > > On Wed 14. Nov 2018 at 19:48, naresh Goud <
> > nareshgoud.dulam@gmail.com>
> > > > > wrote:
> > > > >
> > > > > > Static IP. Buying static IP may help. I am not aws expert
> > > > > >
> > > > > > On Wed, Nov 14, 2018 at 12:47 PM Srinivas Rapolu <
> > cnu.text@gmail.com
> > > >
> > > > > > wrote:
> > > > > >
> > > > > > > Hello Kafka experts,
> > > > > > >
> > > > > > > We are running Kafka on AWS, main question is what is the
best
> > way
> > > to
> > > > > > > retain broker.id on new instance spun-up in-place of
> > > instance/broker
> > > > > > > failed.
> > > > > > >
> > > > > > > We are currently running Kafka in AWS with broker.id gets
auto
> > > > > > generated.
> > > > > > > But we are having issues when a broker is failed, new
> > > broker/instance
> > > > > > > spun-up in AWS get assigned with new broker.id. The issue
is,
> > with
> > > > > this
> > > > > > > approach, we need to re-assign the topics/replications
on to
> the
> > > new
> > > > > > broker
> > > > > > > manually.
> > > > > > >
> > > > > > > We learned that, replication can be auto resolved by Kafka,
if
> we
> > > can
> > > > > > > manage to get the same broker.id on the new AWS instance
> spun-up
> > > > > > in-place
> > > > > > > of failed broker/instance.
> > > > > > >
> > > > > > > I have read, we can set broker.id.generation.enable= false,
but
> > > what
> > > > is
> > > > > > the
> > > > > > > best way to identify and retain the broker.id? Any links/help
> is
> > > > > > > appreciated.
> > > > > > > Thanks and Regards,
> > > > > > > Cnu
> > > > > > >
> > > > > > --
> > > > > > Thanks,
> > > > > > Naresh
> > > > > > www.linkedin.com/in/naresh-dulam
> > > > > > http://hadoopandspark.blogspot.com/
> > > > > >
> > > > > --
> > > > > Thanks,
> > > > > Andrey
> > > > >
> > > >
> > >
> >
>
>
> --
> Thanks and Regards,
> Amit Pal
>


-- 
Kaufman Ng
+1 646 961 8063
Solutions Architect | Confluent | www.confluent.io

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