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From David Aronchick <aronch...@gmail.com>
Subject Re: Cassandra and Kubernetes and scaling
Date Sun, 11 Sep 2016 22:20:30 GMT
Please let me know if I can help at all!

On Sun, Sep 11, 2016 at 2:55 PM, Jens Rantil <jens.rantil@tink.se> wrote:

> Hi Aiman,
>
> I noticed you never got any reply. This might be of interest: http://blog.
> kubernetes.io/2016/07/thousand-instances-of-cassandra-using-kubernetes-
> pet-set.html
>
> Cheers,
> Jens
>
> On Tuesday, May 24, 2016, Aiman Parvaiz <aiman@flipagram.com> wrote:
>
>> Looking forward to hearing from the community about this.
>>
>> Sent from my iPhone
>>
>> > On May 24, 2016, at 10:19 AM, Mike Wojcikiewicz <mike@withkash.com>
>> wrote:
>> >
>> > I saw a thread from April 2016 talking about Cassandra and Kubernetes,
>> and have a few follow up questions.  It seems that especially after v1.2 of
>> Kubernetes, and the upcoming 1.3 features, this would be a very viable
>> option of running Cassandra on.
>> >
>> > My questions pertain to HostIds and Scaling Up/Down, and are related:
>> >
>> > 1.  If a container's host dies and is then brought up on another host,
>> can you start up with the same PersistentVolume as the original container
>> had?  Which begs the question would the new container get a new HostId,
>> implying it would need to bootstrap into the environment?   If it's a
>> bootstrap, does the old one get deco'd/assassinated?
>> >
>> > 2. Scaling up/down.  Scaling up would be relatively easy, as it should
>> just kick off Bootstrapping the node into the cluster, but what if you need
>> to scale down?  Would the Container get deco'd by the scaling down process?
>> or just terminated, leaving you with potential missing replicas
>> >
>> > 3. Scaling up and increasing the RF of a particular keyspace, would
>> there be a clean way to do this with the kubernetes tooling?
>> >
>> > In the end I'm wondering how much of the Kubernetes + Cassandra
>> involves nodetool, and how much is just a Docker image where you need to
>> manage that all yourself (painfully)
>> >
>> > --
>> > --mike
>>
>
>
> --
> Jens Rantil
> Backend engineer
> Tink AB
>
> Email: jens.rantil@tink.se
> Phone: +46 708 84 18 32
> Web: www.tink.se
>
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