# Docker Swarm issues

**URL:** <https://hub.mender.io/t/docker-swarm-issues/2756>\
**Category:** General Discussions\
**Created:** [October 29, 2020, 8:24pm UTC](https://hub.mender.io/t/docker-swarm-issues/2756 "2020-10-29T20:24:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mluz](https://avatars.discourse-cdn.com/v4/letter/m/4da419/32.png) [@mluz](https://hub.mender.io/u/mluz)\
**Post date:** [October 29, 2020, 8:24pm UTC](https://hub.mender.io/t/docker-swarm-issues/2756/1 "2020-10-29T20:24:38Z")

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> <https://github.com/mendersoftware/integration/blob/2de33f2ca342c9ffda612ecd5090f39249a4257c/extra/cluster-setup.md>

I used this guide to get started on setting up a Docker Swarm for hosting my Mender instance but have hit two strange errors:

1. The useradm service cannot connect to the db. Its mongo docker service has an alias of “mongo-useradm”, which is what the docs indicate it should default to. The other three services with associated mongo instances have started fine.
2. The API Gateway cannot find “mender-inventory” – which is weird because it’s one of the services that looks to have started fine; I was expecting it to not be able to find the mender-useradm service, which is failing because of 1.  
Any help appreciated! Thanks

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**Author:** ![mluz](https://avatars.discourse-cdn.com/v4/letter/m/4da419/32.png) [@mluz](https://hub.mender.io/u/mluz)\
**Post date:** [November 1, 2020, 7:04pm UTC](https://hub.mender.io/t/docker-swarm-issues/2756/2 "2020-11-01T19:04:32Z")

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Update: the two issues have been resolved after a fresh install of Docker. However I’m now experiencing two other issues:

1. The Minio service will not start – nothing helpful in the logs, just basic --help output. The container attempts to start 3 times and each time just shuts down right away.
2. I can’t access the UI

I also noticed the cluster-setup walkthrough doesn’t create a workflows service. Is this not required for basic open source functionality?

Any help appreciated!

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**Author:** ![mluz](https://avatars.discourse-cdn.com/v4/letter/m/4da419/32.png) [@mluz](https://hub.mender.io/u/mluz)\
**Post date:** [November 2, 2020, 11:36pm UTC](https://hub.mender.io/t/docker-swarm-issues/2756/3 "2020-11-02T23:36:09Z")

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After some config massaging I’ve got the Swarm working