Yeah, so what's happening is, I'm running Cassandra thru a docker image in
production, and so over there, it is using the datacenter name that I
specified thru an env variable.
But on my local machine, Cassandra is annoyingly insisting on 'datacenter1'.
So in order to maintain the same .cql scripts for setting up the db, I
either need to change the dc name locally or in production.
I guess it looks like I should leave it 'datacenter1' in production.
On Tue, Oct 11, 2016 at 1:19 AM, Amit Trivedi <tria...@gmail.com> wrote:
> I believe it is coming from system.local. You can verify by executing
>
> select data_center from system.local;
>
> I would be careful changing datacenter name, particularly in production. This
> is essentially because if change of datacenter requires snitch
> configuration change, it may result in stale data depending on token values
> and snitch settings and there is a risk of node reporting invalid/ missing
> data to client.
>
>
>
> On Mon, Oct 10, 2016 at 4:08 PM, Ali Akhtar <ali.rac...@gmail.com> wrote:
>
>> So I see this:
>>
>> cluster_name: 'Test Cluster'
>>
>> But when I grep -i or ctrl + f for 'datacenter1` in cassandra.yaml, I
>> don't see that anywhere except in a comment.
>>
>>
>> Yet when I do nodetool status, I see: datacenter1
>>
>> And unless I define my replication as: '{'class':
>> 'NetworkTopologyStrategy', 'datacenter1' : 3}' when creating my keyspace,
>> my inserts / selects don't work because it says 0 replicas available (i.e
>> if i use anything other than 'datacenter1' in the above stmt)
>>
>> I don't see 'datacenter1' in rackdc.properties. So my question is, which
>> file contains 'datacenter1'?
>>
>> On Tue, Oct 11, 2016 at 12:54 AM, Adam Hutson <a...@datascale.io> wrote:
>>
>>> There is a cluster name in the cassandra.yaml for naming the cluster,
>>> aka data center. Then you assign keyspaces to the data center within the
>>> CREATE KEYSPACE stmt with NetworkTopology.
>>>
>>>
>>> On Monday, October 10, 2016, Ali Akhtar <ali.rac...@gmail.com> wrote:
>>>
>>>> Where can I change the default name 'datacenter1'? I've looked through
>>>> the configuration files in /etc/cassandra , and can't find where this value
>>>> is being defined.
>>>>
>>>
>>>
>>> --
>>>
>>> Adam Hutson
>>> Data Architect | DataScale
>>> +1 (417) 224-5212
>>> a...@datascale.io
>>>
>>
>>
>
