Does MailPiler officially support Docker Swarm?

[omkarbabar05]

Hello @jsuto,

I am trying to confirm the official supported deployment platforms for MailPiler.
Over the last two weeks, I attempted to deploy MailPiler on Docker Swarm, but I encountered several issues such as:

1. MariaDB reinitializing on every Swarm task restart
2. piler-smtp failing to bind properly to port 25 under Swarm networking
3. Swarm rescheduling causing piler.conf and indexes to reset
4. Overlay volume behavior causing store and sphinx folders to break
5. UI becoming unavailable when tasks are recreated
6. Before continuing, I need an official clarification from the maintainer.

My Question

👉 Does MailPiler officially support Docker Swarm, or is it supported only on docker-compose / single-host Docker?

Why I’m Asking

I need to provide a documented and authoritative answer to a client regarding whether MailPiler is intended to run on Swarm or only with docker-compose.

Observations

Official documentation only shows docker-compose usage

The image initialization scripts appear designed for single-host Docker

Community discussions suggest Swarm is not supported

MariaDB (used by MailPiler) is known to be incompatible with Swarm rescheduling

I would greatly appreciate an official confirmation so I can pass it on accurately.

Thank you.

[jsuto]

Hello @omkarbabar05, well, I haven't tried Docker Swarm yet. But since it's still docker, it should work, perhaps with a few tweaks. If mariadb reinitializes every task start, then I guess, it has no persistent storage. We need to go over all issues 1-6 and solve them one after the other.