Split storage & solr

[Daniel Miller]

Is it possible to setup the following:

1. Primary mailserver with SMTP solutions and Dovecot.
2. Primary server will store recent mails.
3. Secondary server for archival storage and Solr.

So I'm not looking for a distributed cluster - simply a splitting of 
designated functions. Clients would only be connecting to the primary 
server. I know Dovecot supports an alternate storage location - that's 
what made me think this was possible. What I'm more uncertain of is 
Solr.

My (probably flawed) thinking is to take advantage of a low-cost 
high-availability cloud server to provide primary email services. 
Dovecot, Postfix, and even ASSP don't have significant memory or 
processor requirements by themselves - especially for my smaller user 
base.  However - storage in the cloud can be at a premium. Therefore I'm 
thinking of continuing to self-host the archives.  And my own server has 
the raw power & memory to handle Solr easily.  What's triggering this is 
our ISP's quality has been deteriorating - and the alternates don't 
appear much better.

Initial visualization would have a VPN/SSH connection between the 
servers, and NFS mounting my storage to the cloud server for archives. 
If our connection drops - in theory "current" mail handling is 
unaffected.

My concerns/questions:
1. If Dovecot is unable to reach the remote Solr - upon re-connection 
will Solr be told about the new messages to index? Or do I need to setup 
a periodic re-scan?
2. Is there a "better" method of accessing the archive storage area than 
NFS? Either a different network file system or is there a way to do it 
with Dovecot directly?
3. What am I not taking into consideration in this setup that you think 
will be a problem?

---
Daniel
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://dovecot.org/pipermail/dovecot/attachments/20200129/96d8a51f/attachment.html>