I wrote an node api using thunk-redis, and testing from POSTman. The data get or set works sometimes and sometimes it just hangs in there, and times out with the error message "connect ETIMEDOUT 172.17.0.6:7000"

I followed steps here in https://github.com/Grokzen/docker-redis-cluster to create a docker image with 7000 -> 7002 exposed for clients.

The documentation is not so helpful w.r.t cluster configuration. How do I debug and isolate the issue?