Re: High Availability

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El abr 20, 2015 3:55 AM, "Bron Gondwana" <brong@xxxxxxxxxxx> escribió:
>
> (taking it back to the list in case it's useful to others)
>  
> On Mon, Apr 20, 2015, at 05:45 PM, Lalot Dominique wrote:
>>
>> Hello Bron
>>  
>> Unfortunately I would'nt be able to go to The Hague..
>
>  
> Oh well :)
>  
>>
>> Just as a simple question, the only drawback of not using is that you won't be able to share folders?
>
>  
> That's the only drawback we have.  You can only share folders with users on the same server.  For our family/business accounts, we just make sure all users are on the same backend.
>  
> We run hundreds of servers, and use nginx as a proxy in front of them so we can move users without them knowing or having to update settings.
>  
>>
>> Can we have several imap servers without using muder?
>
>  
> Sure.  We do a thing we call slots and stores, where we split each machines up into up to 40 separate instances of Cyrus with 1Tb of storage each, replicating to different machines.
>  
>>
>> I had only used a simple setup, one imap server with several spools
>
>  
> That works fine, but it wont' give you high availability.
>  
>>
>> Is there some more information somewhere?
>
>  
> Not much unfortunately.  We've written about our setup many times, most recently here:
>  
> http://blog.fastmail.com/2014/12/04/standalone-mail-servers/
>  
> and more detail here:
>  
> https://www.fastmail.com/help/technical/architecture.html
>  
> But they don't give you quite enough configuration detail to just plug and play.
>  
> Our plan with the Cyrus Foundation and developing Cyrus 3.0 is to have pre-configured Docker images which you can just run and add storage, and they will work in a cluster.  It's very ambitious, and we might not have it fully stable by July when we launch 3.0, but it's definitely the eventual goal.
>  
> What is your timeframe for setting up this new system?
>  
> Regards,
>  
> Bron.
>  
> --
> Bron Gondwana
> brong@xxxxxxxxxxx

Interesting, is the use of several instances needed because cyrus cannot scale with threads in a single instance scenario?

Regards,
Ciro

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