Call from a Lambda to s3.getObject Error [TimeoutError]: Connection timed out after 300000ms

Question

I s3 buckets with event onCreated registration to push an event to SNS and from there a lambda.
the lambda download the file from s3 and will ingest the file's content into Elasticsaerch.

from time to time  we are getting an error when downloading the file from s3:

Error [TimeoutError]: Connection timed out after 300000ms

` at ClientRequest. (/var/task/node_modules/aws-sdk/lib/http/node.js:86:34)
    at Object.onceWrapper (events.js:519:28)
    at ClientRequest.emit (events.js:400:28)
    at ClientRequest.emit (domain.js:475:12)
    at TLSSocket.emitRequestTimeout (_http_client.js:790:9)
    at Object.onceWrapper (events.js:519:28)
    at TLSSocket.emit (events.js:412:35)
    at TLSSocket.emit (domain.js:475:12)
    at TLSSocket.Socket._onTimeout (net.js:495:8)
    at listOnTimeout (internal/timers.js:557:17)
    at processTimers (internal/timers.js:500:7) {
  code: 'TimeoutError',`

Can that be due to a concurrency / config/ too many invocations issue?

Answer

Hello.  
Is Lambda running inside a VPC?  
In this case, a VPC endpoint or NAT Gateway must be created to allow access to S3.  
https://docs.aws.amazon.com/lambda/latest/dg/troubleshooting-networking.html  
https://repost.aws/knowledge-center/internet-access-lambda-function  
https://repost.aws/knowledge-center/lambda-vpc-troubleshoot-timeout

Call from a Lambda to s3.getObject Error [TimeoutError]: Connection timed out after 300000ms

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