Make sure serverless is installed. See installation guide.

You will also need to set up your OpenWhisk account credentials using environment variables or a configuration file. Please see the this guide for more information.

npm install in this directory to download the modules from package.json.

serverless deploy or sls deploy. sls is shorthand for the Serverless CLI command

serverless invoke --function greeting or serverless invoke -f greeting

-f is shorthand for --function

In your terminal window you should see the response from Apache OpenWhisk

For more information on the Serverless OpenWhisk plugin, please see the project repository: https://serverless.com/framework/docs/providers/openwhisk/guide/credentials/.