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From George Sigletos <sigle...@textkernel.nl>
Subject Re: Change the IP of a live node
Date Thu, 16 Mar 2017 11:49:23 GMT
This was a network problem at our side after all which we fixed. Cassandra
was blocking connections between 192.168.xxx <-> 10.179.xxx on port 7000

On Wed, Mar 15, 2017 at 2:47 PM, Ryan Svihla <rs@foundev.pro> wrote:

> I've actually changed the ip address quite a bit (gossip complains on
> startup and happily picks up the new address),  I think this maybe easier
> such as..can those ip addresses route to one another ?
>
> As in can the first node with 192.168.xx.xx hit the node with
> 10.179.xx.xx on that interface?
>
> On Wed, Mar 15, 2017 at 9:37 AM, kurt greaves <kurt@instaclustr.com>
> wrote:
>
>> Cassandra uses the IP address for more or less everything. It's possible
>> to change it through some hackery however probably not a great idea. The
>> nodes system tables will still reference the old IP which is likely your
>> problem here.
>>
>> On 14 March 2017 at 18:58, George Sigletos <sigletos@textkernel.nl>
>> wrote:
>>
>>> To give a complete picture, my node has actually two network interfaces:
>>> eth0 for 192.168.xx.xx and eth1 for 10.179.xx.xx
>>>
>>> On Tue, Mar 14, 2017 at 7:46 PM, George Sigletos <sigletos@textkernel.nl
>>> > wrote:
>>>
>>>> Hello,
>>>>
>>>> I am trying to change the IP of a live node (I am not replacing a dead
>>>> one).
>>>>
>>>> So I stop the service on my node (not a seed node), I change the IP
>>>> from 192.168.xx.xx to 10.179.xx.xx, and modify "listen_address" and
>>>> "rpc_address" in the cassandra.yaml, while I also set auto_bootstrap:
>>>> false. Then I restart but it fails to see the rest of the cluster:
>>>>
>>>> Datacenter: DC1
>>>> ===============
>>>> Status=Up/Down
>>>> |/ State=Normal/Leaving/Joining/Moving
>>>> --  Address        Load       Tokens  Owns    Host
>>>> ID                               Rack
>>>> DN  192.168.xx.xx  ?          256     ?
>>>> 241f3002-8f89-4433-a521-4fa4b070b704  r1
>>>> UN  10.179.xx.xx  3.45 TB    256     ?
>>>> 3b07df3b-683b-4e2d-b307-3c48190c8f1c  RAC1
>>>> DN  192.168.xx.xx  ?          256     ?
>>>> 19636f1e-9417-4354-8364-6617b8d3d20b  r1
>>>> DN  192.168.xx.xx    ?          256     ?
>>>> 9c65c71c-f5dd-4267-af9e-a20881cf3d48  r1
>>>> DN  192.168.xx.xx   ?          256     ?
>>>> ee75219f-0f2c-4be0-bd6d-038315212728  r1
>>>>
>>>> Am I doing anything wrong? Thanks in advance
>>>>
>>>> Kind regards,
>>>> George
>>>>
>>>
>>>
>>
>
>
> --
>
> Thanks,
> Ryan Svihla
>
>

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