Lambda function is not triggered using Cron

Question

I have an event in AWS Serverless with the following YML :

service: change-status-to-insale
provider:
  name: aws
  runtime: nodejs12.x
functions:
  changeWeeklyStarterStatus:
    # Two Minutes : 0 */2 * ? * *   
    handler: handler.changeWeeklyStarterStatus
    schedule: cron(0 */2 * ? * *)
    enabled: true

I've uploaded using the command

serverless deploy

I've tried to invoke it every 2 minutes using the formula :

0 */2 * ? * *

However the event is not triggered.

I've tested it using the Test button and it runs the function perfectly.

But it's still not triggered.

Why ? What am I missing ?

0 */2 * ? * * (it's basically for At minute 0 past every 2nd hour.) — Chetan Kumar
– Chetan Kumar, Commented Jan 8, 2020 at 12:49

Chetan Kumar · Accepted Answer · 2020-01-08 13:08:09Z

4

You have used wrong configuration for cron expression. use */2 * * * ? * for every 2 minute.

How to schedule from AWS Cloudwatch

edited Jan 8, 2020 at 13:08

answered Jan 8, 2020 at 12:48

Chetan Kumar

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6 Comments

JAN Over a year ago

Thanks , I've changed it to your formula and it's still not invoked.

Chetan Kumar Over a year ago

Why don't you use the AWS Cloudwatch console service and schedule it from there using the Events. Just create a new rule, schedule it and set Target as your lambda . It's working for me.

Chetan Kumar Over a year ago

I have edited my answer and attached the screenshot for your reference.

JAN Over a year ago

You're awesome ! So what's the deal with the YAML file ? it doesn't do the job ? useless ?

Chetan Kumar Over a year ago

Thanks :) Not sure about that, may be for just local invocation as SAM Template it's required, will check and update.

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