Docker1.12 Worker not able to join in cluster(Swarm: Pending)

Question

Manager Version Docker version 1.12.0-rc5, build a3f2063,

Worker version Docker version 1.12.0-rc5, build a3f2063.

Created Swarm m

Answer 1

According to dockers website Here they stated the ports to enable. Run the following commands on both the Swam Manager and worker nodes

sudo ufw enable
sudo ufw allow 22/tcp
sudo ufw allow 2376/tcp
sudo ufw allow 2377/tcp
sudo ufw allow 7946/tcp
sudo ufw allow 7946/udp
sudo ufw allow 4789/udp
sudo ufw reload

We just gave access to the neccessary port. After running these commands, all docker commands should be working now.