Serverless using openfaas - Openfaas on MAC

Please follow the step to run openfaas on MAC with Docker Swarm:

• Clone faas from github which has a shell script to deploy faas stack:

• $ git clone https://github.com/openfaas/faas

• Initialize Swarm on docker demon:
• $ docker swarm init
• Deploy the faas stack:
  
• $ cd faas

  $ ./deploy_stack.sh

• Get the credentials which is displayed here:
• 
  [Credentials]
username: admin
password: <password_displayed_here>
• Login to openfaas GUI using the above auth:
• http://localhost:8080/
• 
• Install faas-cli which will be used to work with openfaas:
• $ brew install faas-cli
• Lets create a sample python hello-world function:

• ~$mkdir functions

• cd ~/functions

• Create the below files
  
• test1 $ls -l
  total 16
  -rw-r--r--  1 zulfi  MS\Domain Users   44 Jun 15 08:34 handler.py
  -rw-------  1 zulfi  MS\Domain Users  143 Jun 15 08:35 test1.yml
  test1 $
• handler.py
• test1 $cat handler.py
  def handle(par):
      print("Hello! " + par)
• test1 $cat handler.py
  def handle(par):
      print("Hello! " + par)
  test1 $cat test1.yml
  version: 1.0
  provider:
    name: openfaas
    gateway: http://127.0.0.1:8080
  functions:
    test1:
      lang: python
      handler: .
      image: test1
  
• Build the image using the .py
• test1 $faas-cli build -f ./test1.yml     #verify the image using $docker images | grep test1
• test1 $docker images | grep test1
  test1                                    latest              520c8f8c918a        25 seconds ago      87.1MB
  
• Deploy faas function:
• test1 $faas-cli deploy -f ./test1.yml
  Deploying: test1.
  WARNING! Communication is not secure, please consider using HTTPS. Letsencrypt.org offers free SSL/TLS certificates.
  
  Deployed. 202 Accepted.
  URL: http://127.0.0.1:8080/function/test1
• Test the function using curl:
• test1 $curl http://127.0.0.1:8080/function/test1 -d "zulfi"
  Hello! zulfi
• Using GUI:
•