Cron Job in AWS

Question

Hi Team,

We are planning to run a cron job in AWS. The jobs runs for 1 hr every day. 
1) If we use EC2 rest of 23 hours we simply spend money on it
2) As cron job runs for 1 hr, lambda function will not work. As lambda function will get timed out after 15 minute

So could you please let me any better solution for it.

Regards,
Rajesh Khanna B

Paul · Answer

The answer above seems very attractive to solve your isssue. 
I'd like to contribute with something else. If you cron job runs and depends on linux platform for a number of reason(s): Setup a Lambda to start your EC2 instance,  starts your cron as fixed schedule and after an hour, a Lambda stops your EC2 instance.

Antonio Lagrotteria · Answer

Hi, I would look into:
* EventBridge Scheduler: https://aws.amazon.com/blogs/compute/introducing-amazon-eventbridge-scheduler/
* EC2 spot instance. Spot Fleet (https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/spot-fleet.html). An alternative to Spot instances is to use ECS or Fargate, but then I would suggest to destroy the environment in case you do not want to incur into cost, since you want to running only for one hour.
* If above (EventtBridge scheduler) is not an option, then you may look into AWS Batch (https://aws.amazon.com/batch/)

Hope it helps ;)

Cron Job in AWS

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