Basics

Base Install

npm -i -g serverless

Create a Project

sls create --template aws-nodejs --path sls-node-test

Running the Demo Function

jeffm@mac-algo [06:47:18]:~/sls-node-test# sls invoke local -f hello
{
    "statusCode": 200,
    "body": "{\n  \"message\": \"Go Serverless v1.0! Your function executed successfully!\",\n  \"input\": \"\"\n}"
}
jeffm@mac-algo [06:47:22]:~/sls-node-test#

Deploying the Demo Function

sls deploy ( will use default local credentials for AWS )

Removing the Demo Function

sls remove ( dumps everything )

Adjusting the Region and State in serverless.yml

service: sls-node-test
frameworkVersion: '3'

provider:
  name: aws
  runtime: nodejs12.x
  region: us-west-2
  state: dev

functions:
  hello:
    handler: handler.hello

Adjusting the Region and State from the cli

sls deploy --region us-west-1 --state prod

Adding an API endpint

In server.yml add the following event properties to the function you wish to call:

functions:
  hello:
    handler: handler.hello
    events: 
      - http: 
          path: api/hello
          method: get

Function Memory Size and Timeout

In your server.yml you can adjust the timeout and memory size per function as well as having a global default

Per Function:

functions:
  hello:
    handler: handler.hello
    memorySize: 128
    timeout: 3
    events: 
      - http: 
          path: api/hello
          method: get

Globally:

provider:
  name: aws
  runtime: nodejs12.x
  region: us-west-2
  state: dev
  memorySize: 128
  timeout: 3

Deploy a Single Function from a file

sls deploy -s prod -f hello