Diogo Oliveira de Melo

Docker Swarm on AWS EC2 Using Fedora 25

Here are the steps I used to launch a Fedora 25 instance, on AWS, and make it join the Docker Swarm.

EC2 Instance

I used Fedora 25, 64 bits, HVM, EBS-based, the Cloud version (not the Atomic one).

Make sure this machine is accessible from the other managers/workers on the Docker Swarm. The following ports must be available:

Protocol	Port
TCP	2376
TCP	2377
TCP/UDP	7946
UDP	4789

Installing requirements

First thing is to give a name to the host (edit /etc/hostname) and update packages:

dnf update -y

If the kernel was also updated, then reboot the machine. After that, follow the steps described on Get Docker for Fedora.

Joining the Swarm

Make sure you enable and start the Docker daemon:

systemctl enable docker && systemctl start docker

To join the Swarm, besides the basic parameters also specify listen-addr and advertise-addr, where the former may be 0.0.0.0 (so that it can listen on all interfaces) and the latter is the instance’s public IP:

docker swarm join \
--token SWMTKN-1-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \
--listen-addr=0.0.0.0 \
--advertise-addr=53.53.53.53