Cluster general question

[magostinelli]

I have some questione regarding the clustering, I didn't found any exausisteve response in official documentation, so i try to write hereh
For example a want a setup with two different nodes, in different datacenter.
For the storage which one must/can be used? Reading the doc i suppose FoundationDB for the datastore.
Regarding the blob store, each server has is own (replicated) or the nodes must/can share the same s3 bucket?
For the other type of store (full-text, lookup) which one can be used in a cluster setup?

Is gossip protocol encrypted? Using it in a public network is recommended, or is better to use within a private VPN between nodes?

[mdecimus]

For the storage which one must/can be used? Reading the doc i suppose FoundationDB for the datastore.

Yes, FDB is the recommended store.

Regarding the blob store, each server has is own (replicated) or the nodes must/can share the same s3 bucket?

All nodes have to share the same S3 bucket.

For the other type of store (full-text, lookup) which one can be used in a cluster setup?

FDB for full-text. Redis or Memcached for lookups.

Is gossip protocol encrypted? Using it in a public network is recommended, or is better to use within a private VPN between nodes?

Yes, it is encrypted.

[magostinelli]

Interesting, I want to make a try for a mail server for families and a few friends with 2 cheap VPS and an S3 bucket

In case of two servers, the balancing can be via dns? Multiple mx records, multiple A records and a cname?
A 1.1.1.1 mail1.example.com mx1.example.com
A 2.2.2.2 mail2.example.com mx1.example.com
CANME mail.example.com -> mail1.example.com
MX 1 mx1.example.com
MX 10 mx2.example.com

So i can access my mail directly on each node or use the cname?

What do you recommend for a webmail? There is an embedded on or I can use the classic roundcube?

In the VPS the 443 port is used bt stalwart, so no other services can be deployed on the same server, it's correct?

[mdecimus]

In case of two servers, the balancing can be via dns? Multiple mx records, multiple A records and a cname?

Yes, a load balancer would be better but multiple DNS records will also do the job.

So i can access my mail directly on each node or use the cname?

Both options should work.

What do you recommend for a webmail? There is an embedded on or I can use the classic roundcube?

Sogo, Roundcube, Snappymail or TMail Web (JMAP).

In the VPS the 443 port is used bt stalwart, so no other services can be deployed on the same server, it's correct?

Yes, unless you use Nginx (or similar) to redirect requests.

[magostinelli]

Thank you for your response.
Regarding the reverse proxy, I read the official documentation with the examples (https://stalw.art/docs/server/reverse-proxy/nginx/).

In the example all the https (443) is routed to stalwart, in my scenario, i want to proxy only certain requests.
For example:
mydomain.com, mail.mydomain.com -> stalwart
roundcube.mysqdomain.com, webmail.mydomain.com (or mydomain.com/webmail) -> roundcube docker listening on custom port

Is it possible?
In this way I can use the same server for mail daemon and the webmail.

[mdecimus]

In the example all the https (443) is routed to stalwart, in my scenario, i want to proxy only certain requests.

You'll need to setup NGINX (or similar) to do this.