Stateless is used as a solution for everything nowadays: scale, containerize, make fault tolerant… But it is a reality that not everything can be stateless, even if you store the configurations inside the containers, you need to store static files somewhere, you need databases that are stateful by definition, and not all the tools that you will be using are created to be stateless.
The current stable version of Docker Swarm has an important feature missing, and is the same control over logs available without orchestratrion.
In this article I will explore some different options for graphical interfaces to manage a Docker Swarm cluster and I will show how to install Portainer as a Swarm Service.
The goal of this article is to achieve a clean installation of Docker and Docker Swarm on Centos 7.X, then we will also create our first cluster.