# Docker Swarm cluster

**URL:** <https://community.cratedb.com/t/docker-swarm-cluster/749>\
**Category:** CrateDB\
**Created:** [July 21, 2021, 10:34am UTC](https://community.cratedb.com/t/docker-swarm-cluster/749 "2021-07-21T10:34:10Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Walter\_Behmann](https://sea2.discourse-cdn.com/flex020/user_avatar/community.cratedb.com/walter_behmann/32/117_2.png) [@Walter\_Behmann](https://community.cratedb.com/u/Walter_Behmann)\
**Post date:** [July 22, 2021, 5:41pm UTC](https://community.cratedb.com/t/docker-swarm-cluster/749/2 "2021-07-22T17:41:26Z")

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The config does look ok IMHO. Could you make sure that the “disks” are empty and do not hold a “single-node” cluster state? My guess (also just a guess :-)) that it is something similar to [Crate DB Clustering on EC2](https://community.cratedb.com/t/crate-db-clustering-on-ec2/334) where the nodes where started as single nodes first.

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