Docker-compose combining scylladb and cassandra

[juliangamble@gmail.com]

Hi Everyone, 

I'm a long time cassandra user - and am entering the world of Scylladb. 

I'm exploring the idea that ScyllaDB is fully compatible with cassandra. (Perhaps there are some caveats I need to read. 

In theory you should be able to start up a docker-compose arrangement with both scylladb and cassandra nodes and have them gossip over a common network. 

I've got the following docker-compose.yml file

    version: '2'

    services:

      scylla-server:

        image: 'scylladb/scylla:1.6.2'

        container_name: scylla-server

        environment:

          - CASSANDRA_SEEDS=scylla-server

        ports:

          - '7000:7000'

          - '7001:7001'

          - '7199:7199'

          - '9042:9042'

          - '9160:9160'

        volumes:

          - 'cassandra_data:/data/cassandra'

      cassandra-utils:

        image: 'cassandra:3.10'

        container_name: cassandra-utils

        environment:

          - CASSANDRA_SEEDS=scylla-server

        links:

          - scylla-server

        ports:

          - '7003:7000'

          - '7004:7001'

          - '8002:7199'

          - '9045:9042'

          - '9163:9160'

    volumes:

      cassandra_data:

        driver: local

and am running

    docker-compose up

    docker exec -it scylla-server nodetool status

    docker logs cassandra-utils

What I'm seeing is that the cassandra-utils container dies with the error

    unable to gossip with any seeds

Are my expectations incorrect somewhere? Am I looking at incompatible versions of cassandra?

Thanks in advance to this awesome community. 

Cheers

Julian

[Glauber Costa]

On Wed, Mar 22, 2017 at 8:04 AM, <julian...@gmail.com> wrote:
> Hi Everyone,
>
> I'm a long time cassandra user - and am entering the world of Scylladb.
>
> I'm exploring the idea that ScyllaDB is fully compatible with cassandra.
> (Perhaps there are some caveats I need to read.
>
> In theory you should be able to start up a docker-compose arrangement with
> both scylladb and cassandra nodes and have them gossip over a common
> network.
>

Scylla is tool-compatible with Cassandra, but the inter-node protocols
are different. So mixed clusters are not supported.

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