For me when trying to restart the containers, for nginx I got
Cannot restart container <container name>: driver failed programming external connectivity on endpoint dtr-nginx-<replicaID>ptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 444 -j DNAT --to-destination <nginxdockerIP> ! -i : iptables: No chain/target/match by that name. (exit status 1)
Although I still unfortunately don’t know what could have happened after my restart of the DTR node to cause these issues with the nginx and dtr-jobrunner dtr containers to where they wouldn’t start but at that point I was forced to remove and re-install DTR.
For your case though this is what I used to install DTR on my 3 node swarm configuration which would be documented here: http://docs.docker.com.s3-website-us-east-1.amazonaws.com/docker-trusted-registry/install/
docker run -it --rm
–ucp-ca “$(cat <your.pem>)”
The node names are from the UCP > Resources > Nodes that you had named them. Let me know if this helps.