Hi Philon,
Thanks a lot for your thoughts!
Can I ask you if using Solr improved things for you? I have a mailbox
with 15 years of e-mail and searching things take a long time.
On 04.02.2020 09:39, Philon wrote:> Hi Francis,
>
> next to fts-solr there was fts-lucene. But that Lucene there seems
> heavily outdated why the Dovecot docs also suggest using Solr.
> Elasticsearch probably is similar to Solr but the later is maintained
> by Dovecot team.
>
> I started with downloading the Solr binary distribution to Debian with
> JRE preinstalled and things were running like after 10 min. Yes it?s a
> bit more complicated to find the schema and edit things like header
> size (in tips section). It?s running quite nicely since then and has
> zero maintenance.
I will try again - I kept getting some weird errors, so I don't know if
that's why I wasn't seing much of improvement.
>
> As FTS indexes are separate in external Solr instance I?d guess that
> it won?t interfere with dsync. What I don?t know is if dsync?ing would
> trigger indexing. This brings me to wonder how one could actually
> replicate the Solr instance!?
Good question. But what I thought about doing was to install FTS on my
backup instance, and if things go fine, then I install an FTS instance
on my production server - that is, if one doesn't interfere with the
other.
I will give Solr another shot - my worries are mostly if Solr is
supported on ARM (my prod instance is running on ARM) - I know
Elasticsearch has an ARM build.
Ii thought about the Xapian engine, but since it requires dovecot 2.3, I
will have to wait.
Best,
Francis
>
> Philon
>
>> On 31 Jan 2020, at 17:24, Francis Augusto Medeiros-Logeay
>> <r_f at med-lo.eu> wrote:
>>
>> Hi there,
>>
>> I got successfully to replicate my mail server to another dovecot
>> install using dsync, mainly for redundancy, and it works great.
>>
>> I want to try to install fts, as some of the mailboxes have tens of
>> thousands of messages, and it takes minutes to get some results when
>> searching via IMAP on a Roundcube interface.
>>
>> I want to experiment with fts-solr first, and firstly on my redundant
>> server, ie., not on my main dovecot install. Is it ok to do this? I
>> ask because I am afraid of how this whole reindexing on the redundant
>> install will affect the production server.
>>
>> Also, any tips on something else than fts-solr? I tried it once, but
>> it was so hard to get it right, so many configurations, java, etc.,
>> that I'd rather try something else. I also could try fts-elastic or
>> something like that, but, again, having to maintain an elasticsearch
>> install might use more resources than I think is worth. Any thoughts
>> on that?
>>
>> Best,
>>
>> --
>> Francis
>>
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