First of all, we need our function. The static hello-world function requires the following three lines of Python code:
import jsondef handler(): return "Hello World!"
Place the preceding code, which is also available in the Chapter04/hello-world folder of the GitHub repository that accompanies this book, in a file called hello.py.
Now we have our function we can deploy it into the default namespace by running the following command:
$ kubeless function deploy hello \ --from-file hello.py --handler hello.handler \ --runtime python2.7 \ --trigger-http
This command creates a function called hello, using the file hello.py. Whenever the function called hello.handler is executed, we are using the python2.7 runtime, and our function ...