I have one data container and I would like to use several web_only containers (several forums on separate servers). How to I pass a DB ID to web_only container so that multiple forums use their own cache? Without this the stats reported in Admin → Reports are mixed up between different forums.

I’ve found the corresponding setting via this answer . It’s hidden in discourse_defaults.conf: config/discourse_defaults.conf ee18d9ace # redis server port redis_port = 6379 # redis slave server address redis_slave_host = …

Definitely do not do anything like this :fire: . Message Bus which is responsible for long polling relies on pub/sub, pub/sub is always on “db 0” not configurable. If you try to co-host multiple Discourses on one Redis DB expect some very major amount of breakage.

Thank you for the warning! :bowing_man:

@sam is your warning :fire: from 2018 about the message bus exclusively linked to Redis db 0 still accurate, or can we use now a different redis instance database ID to host different discourse instances? I noticed in the multisite-configuration-with-docker howto, there is a db_id: 2 defined, I tho…

[image] ryanerwin: is your warning :fire: from 2018 about the message bus exclusively linked to Redis db 0 still accurate Yes this is still 100% correct afaik, PUB/SUB in redis is tied to DB 0. Discourse multisite is designed to work fine with multiple instances talking to 1 redis with db 0. …

How to set redis DB ID in Docker container?

Product Support Self-hosting

rluba Octobre 17, 2018, 2:40 2

I’ve got the same issue. I have an existing redis cluster (with replication and failover) that I want Discourse to use, but I can’t find a way to tell Discourse which database index to use.

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How to set redis DB ID in Docker container?

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