Docker swarm connection error

Hi guys!

I’m having a problem with my docker swarm. I have a master and some slaves. A jenkins instance running in one slave with a port exposed. Everyday I have been connecting with jenkins, using “master-ip:slave-service-exposed-port”, but suddenly, I cannot connect to any slave port from my master instance.

I can manager the manager normally (adding / removing / scaling services and so on), but cannot connect to slave services ports.

I tried to restart docker and even, restart the master host. Nothing solved this issue. I’m afraid that I will need to recreate the swarm…

Anybody experienced this before or knows a solution for this?