Getting No logs/failures for private docker "scar init -n SREBlackBoxTester -i 8236.dkr.ecr.us-west-2.amazonaws.com/abc-gat:latest"

[tarunkumard]

Hi Bro,
i am trying to execute a private docker image hosted on amazon ECR ,but problem is when i execute it ,i see no logs getting generated ,neither any failure in AWS cloud-watch or scar logs..my suspicion is scar not executing the private docker image on ECR

Below are core steps with which i run or execute my private image ,with scar i am not getting the output in AWS lambda or cloud-watch help or suggest alternate action needed to make this private docker image on AWS lambda

• aws configure set aws_access_key_id $AWS_ACCESS_KEY_ID
  - aws configure set aws_secret_access_key $AWS_SECRET_ACCESS_KEY
  - aws configure set default.region us-west-2
  - aws configure set default.output json
  - eval $(aws ecr get-login --no-include-email --region us-west-2)
  - docker login 8236.dkr.ecr.us-west-2.amazonaws.com -u AWS -p $PWD
  -docker run 8236.dkr.ecr.us-west-2.amazonaws.com /abc-gat:latest

here is the command
~ $ scar init -n SREBlackBoxTester -i 8236.dkr.ecr.us-west-2.amazonaws.com/abc-gat:latest"
~ $ scar log -n SREBlackBoxTester
~ $ scar rm -n SREBlackBoxTester
Log group '/aws/lambda/Tester' successfully deleted.
Function 'Tester' successfully deleted.

[tarunkumard]

@srisco is it possible to execute private docker on AWS ECR to execute on SCAR ,i have used images from dockerhub ,but i need a private docker image to run serverless on AWS lambda ,possible?

[gmolto]

Hi. Support for pulling images from AWS ECR should be implemented in udocker (not in SCAR). Last time we tested this (a year and a half ago) this support was not available but you can try with the latest update of udocker and let us know if it works.

[gmolto]

For the sake of reference: indigo-dc/udocker#168

[adokter]

Hi @gmolto, any chance pulling from AWS ECR will become an option soon in SCAR? Docker Hub has started to implement pull limits. Until last week, I used to use SCAR to process radar data in real-time, to produce maps of migrating birds at birdcast. Because I'm hitting the new Docker Hub pull limits, using SCAR is no longer an option. I really liked the SCAR implementation over batch processing with AWS Batch (faster, better scaling, cheaper), so would love to migrate back to SCAR once this option is there.

[gmolto]

Hi @adokter. Thank you for letting us know your use case. Perhaps you could use S3 as the storage back-end for the Docker images (see: https://scar.readthedocs.io/en/latest/advanced_usage.html#upload-docker-image-files-using-an-s3-bucket), instead of Docker Hub. Also, if Docker images are small they may fit within the payload (see: https://scar.readthedocs.io/en/latest/advanced_usage.html#upload-slim-docker-image-files-in-the-payload).

AWS ECR support will come as soon as udocker implements it. I saw you already opened an issue there.

Please, let us know how you proceed.

[adokter]

Thanks for the pointers @gmolto, I'll look into it!