Setting up an OpenFAAS Gateway (using Docker Swarm)

README.md

Setting up an OpenFAAS Gateway (using Docker Swarm)

Note: For the Docker Swarm setup, check out the official guide.

bash setup.sh [<OPENFAAS-HOME-DIRECTORY>]

whereby OPENFAAS-HOME-DIRECTORY defaults to /data/openfaas.

Note down the credentials which you will need later.

setup.sh

#!/usr/bin/env bash

## Stop on errors:
set -e

## Get the OpenFAAS home:
OPENFAAS_HOME="${1:-/data/openfaas}"

## Check if the OpenFAAS home can be created later:
echo "Checking if OpenFAAS home can be created..."
if mkdir "${OPENFAAS_HOME}"; then
    echo "OpenFAAS home can be created. Proceeding..."
    rmdir "${OPENFAAS_HOME}"
else
    echo "OpenFAAS home can not be created. Exiting..." >&2
    exit 1
fi

## Check if we have swarm. If yes, stop as we do not want to mess up.
if docker info 2>&1 | grep -o "Swarm: active" > /dev/null; then
    echo "We already have a swarm. Exiting..." >&2
    exit 1
else
    echo "No swarm detected. Creating..."
    docker swarm init
fi

## Clone OpenFAAS repository:
echo "Cloning OpenFAAS repository..."
git clone https://github.com/openfaas/faas "${OPENFAAS_HOME}"

## Deploy OpenFAAS stack:
echo "Deploying OpenFAAS stack..."
cd "${OPENFAAS_HOME}" || exit 1
./deploy_stack.sh
cd - || exit 1