Hi,

  long story short I have a 3 node Openstack cluster that I manage with kolla-ansible, and I'd like to run Docker Swarm on that as well.  I am aware Magnum exists, but I'd first like to get my head around this simpler case.

Seeing as I'd like to connect Docker containers from swarm compose files to Neutron networks I'm trying to set up Kuryr together with a swarm configuration.  However the documentation is a little scarce and I'd prefer running everything on these three hosts, including etcd.  If I follow the guide and pass --cluster-store and --cluster-advertise arguments to dockerd then I can't run Docker in Swarm mode because I get an error saying Swarm is incompatible with those options, and at the same time it's not clear from documentation how you are expected to do Kuryr+Swarm.  I did initialise the Swarm cluster before trying to add Kuryr, so I don't know if perhaps doing this the other way works?  Do you have ideas or advice with this scenario?  If worst comes to worst I can set up an external etcd cluster on a separate non-Openstack cluster but I'd rather avoid that.

Thanks in advance,

Paolo