Docker for Serverless Applications

Deploying Fn on Docker Swarm

In this example, we start an Fn cluster on a Swarm-scoped network.

Starting with deploying a network, we use weaveworks/net-plugin as the backbone network for stability reasons. Please note that the network must be attachable and the subnet must be inside the scope of  10.32.0.0/16. So, 10.32.3.0/24 is just fine here:

$ docker network create \  --driver weaveworks/net-plugin:2.1.3  --attachable \  --subnet 10.32.3.0/24 \  fn_net

Then we prepare a volume for the datastore. As this section also wanted to demonstrate a product-grade setup, we use MySQL as the store rather than the default SQLite3. Using MySQL allows us to horizontally scale the number of Fn Servers.

The volume will be created using the docker volume ...