execute a command within docker swarm service

Question

1. Initialize swarm mode:

   root@ip-172-31-44-207:/home/ubuntu# docker swarm init --advertise-addr 172.31.44.207
   
   Swarm initialized: current node (4mj61o         
   
   
           

Answer 1

You can jump in a Swarm node and list the docker containers running using:

docker container ls

That will give you the container name in a format similar to: containername.1.q5k89uctyx27zmntkcfooh68f

You can then use the regular exec option to run commands on it:

docker container exec -it containername.1.q5k89uctyx27zmntkcfooh68f bash