How to create CloudWatch alarm for memory usage on lambda based on CloudWatch logs

Question

I have the below log in CloudWatch and would like to create an alarm when average of Max memory usage exceeds 400 MB.

REPORT RequestId: xxxxxx-xxx-xxx-xxx-xxx Duration: 5750.91 ms Billed Duration: 5751 ms Memory Size: 512 MB Max Memory Used: 150 MB Init Duration: 1562.14 ms

Can you elaborate on the question? What exactly are you trying to do and what exactly are you asking? What have you already tried to achieve this? — stijndepestel
– stijndepestel, Commented Aug 12, 2021 at 20:45

John Rotenstein · Accepted Answer · 2021-08-12 22:26:24Z

2

Unfortunately, Memory Used is not one of the standard AWS Lambda function metrics collected by Amazon CloudWatch.

You would need to:

Create metrics from log events using filters - Amazon CloudWatch Logs to parse that log
Configure the filter to find that output line and extract the "Memory Used" figure
Use that extracted figure to populate a new CloudWatch metric
Create an Alarm on that metric

Let us know how it goes!

answered Aug 12, 2021 at 22:26

John Rotenstein

273k28 gold badges455 silver badges540 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

D474 Over a year ago

Thanks John..!! Was looking for something other than the option you mentioned. Now achieved the outcome by creating Custom metric filter.

John Rotenstein Over a year ago

Great! Feel free to Add an Answer describing what you did, to help future readers.

D474 Over a year ago

Referred this - stackoverflow.com/questions/62543001/…

Collectives™ on Stack Overflow

How to create CloudWatch alarm for memory usage on lambda based on CloudWatch logs

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related