High availability of Dovecot

[Jan Bramkamp]

While possible it probably overkill. A simple failover proxy is enough
unless he requires a active-active setup.

On 11.04.19 11:54, Aki Tuomi via dovecot wrote:
> 
> On 11.4.2019 11.44, luckydog xf via dovecot wrote:
>> Hi, list,
>>
>>      I'm going to deploy postfix + dovecot + CephFS( as Mail Storage).
>> Basically I want to use two servers for them, which  is kind of HA.
>>  
>>     My idea is that using keepalived or Pacemaker to host a VIP, which
>> could fail over the other server once one is down. And I'll use
>> Haproxy or Nginx to schedule connections to one of those server based
>> on source IP( Session stickiness),  I'll use VIP as DNS record.etc, is
>> my plan doable?
>>
>>    I know MX could be server ones with different priority. But I think
>> it brings along shortage that DNS couldn't know Email server is up or
>> down, it just returns results to MUA, right?
>>
>>    Thanks for any suggestions and ideas. 
>>
>>     -
> 
> You could use dovecot configured as director in the front, it would
> assign users to backends and maintain that to avoid accessing same users
> on two backends.
> 
> Aki
>