[Self-Hosted] FLUXER_ERLANG_COOKIE is not set

(#817) Bug Fixed self-hosting

29d agoby RexSystem originally by @lucyrose39 on GitHub

Observed behaviour

after running a docker compose pull and docker compose up -d to reload the stack, the gateway repeatedly fails to start with FLUXER_ERLANG_COOKIE is required. I have managed to jank my way around this by setting it to "AAAAAAAAAAAAAAAAAAAA" in the composefile, but this should probably be documented in the self hosted setup, as attempting to deploy following current instructions currently results in a bricked stack - and also so it's known what this value should actually be

Reproduction steps

pull the fluxer stack with docker compose pull bring it up with docker compose up -d gateway will fail to start endlessly with above mentioned error

Build information

Stable Web 2026.904.231615, Linux (x86), Chrome 151.0.0.0, Locale en-US

Platform

API, Self-hosting

4 comments

HampusStaff 1 vote 29d ago originally by @hampus-fluxer on GitHub

I'm in the middle of deploying updated docs right now for the updated compose stack, it seems like you were a bit too fast perhaps. Should be all settled soon.

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HampusStaff 1 vote 29d ago originally by @hampus-fluxer on GitHub

The new docs are now live @ https://docs.fluxer.app/ – let me know if this section in particular solves it: https://github.com/fluxerapp/fluxer/blob/d2438b2fdd9f1812250d5f23fe97d71b702061be/fluxer_docs/src/content/docs/operator/upgrading.mdx?plain=1#L55-L57

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HampusStaff 1 vote 29d ago originally by @hampus-fluxer on GitHub

curl -fsSL -o install.sh https://docs.fluxer.app/install.sh
sh install.sh --update --dir /path/to/your/instance

This should now be enough as of the latest version, the above manual step should no longer be required.

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RexSystem 1 vote 29d ago originally by @lucyrose39 on GitHub OP

confirmed this fix works on our instance

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