Re: Differing snitches in different datacenters

[Jean Carlo <je...@gmail.com>]

Hello Voytek,

In my opinion, It would be better for you to continue using
GossipingPropertyFileSnitch in AWS as well. I would do it to avoid
surprises. I've set up datacenters in AWS using GossipingPropertyFileSnitch
with zero problems.



Jean Carlo

"The best way to predict the future is to invent it" Alan Kay


On Wed, Jul 31, 2019 at 9:06 PM Voytek Jarnot <vo...@gmail.com>
wrote:

> Thanks Paul. Yes - finding a definitive answer is where I'm failing as
> well. I think we're probably going to try it and see what happens, but
> that's a bit worrisome.
>
> On Mon, Jul 29, 2019 at 3:35 PM Paul Chandler <pa...@redshots.com> wrote:
>
>> Hi Voytek,
>>
>> I looked into this a little while ago, and couldn’t really find a
>> definitive answer. We ended up keeping the GossipingPropertyFileSnitch in
>> our GCP Datacenter, the only downside that I could see is that you have to
>> manually specify the rack and DC. But doing it that way does allow you to
>> create a multi vendor cluster if you wished in the future.
>>
>> I would also be interested if anyone has the definitive answer one this.
>>
>> Thanks
>>
>> Paul
>> www.redshots.com
>>
>> On 29 Jul 2019, at 17:06, Voytek Jarnot <vo...@gmail.com> wrote:
>>
>> Just a quick bump - hoping someone can shed some light on whether running
>> different snitches in different datacenters is a terrible idea or no. It'd
>> be fairly temporary, once the new DC is stood up and nodes are rebuilt, the
>> old DC will be decomissioned.
>>
>> On Thu, Jul 25, 2019 at 12:36 PM Voytek Jarnot <vo...@gmail.com>
>> wrote:
>>
>>> Quick and hopefully easy question for the list. Background is existing
>>> cluster (1 DC) will be migrated to AWS-hosted cluster via standing up a
>>> second datacenter, existing cluster will be subsequently decommissioned.
>>>
>>> We currently use GossipingPropertyFileSnitch and are thinking about
>>> using Ec2MultiRegionSnitch in the new AWS DC - that'd position us nicely if
>>> in the future we want to run a multi-DC cluster in AWS. My question is: are
>>> there any issues with one DC using GossipingPropertyFileSnitch and the
>>> other using Ec2MultiRegionSnitch? This setup would be temporary, existing
>>> until the new DC nodes have rebuilt and the old DC is decommissioned.
>>>
>>> Thanks,
>>> Voytek Jarnot
>>>
>>
>>