aws-lambda-layer

Playbook for creating AWS Lambda Layer for Python

Reference:

• https://dev.to/razcodes/how-to-create-a-lambda-layer-in-aws-106m

SSH into Linux VM (example here is Amazon Linux AMI)

Check to see Python3 version, install if necessary.

  python --version
  python3 --version
  sudo yum list | grep python3
  sudo yum install python36 python36-pip
  python --version
  python3 --version
  sudo yum update

Create folder structure for lambda layer.

  mkdir aws-lambda-layer-v1
  cd aws-lambda-layer-v1
  mkdir -p lambda-layer/python/lib/python3.6/sitepackages

Create requirements.txt file (see sample in repo).

  vi requirements.txt
  psycopg2-binary
  pandas
  requests
  sklearn
  numpy
  matplotlib
  seaborn
  sqlalchemy
  <Esc>:wq

Create deployment package as zip file. Remember the "." at end of zip command.

  python3 -m pip install -r requirements.txt -t lambda-layer/python/lib/python3.6/site-packages
  cd lambda-layer
  zip -r9 lambda-layer.zip .

Copy the zip file to s3 bucket. Remember the "/" at end of aws s3 cp command

  aws s3 ls
  aws s3 cp lambda-layer.zip s3://<BUCKET-NAME>/<FOLDER-NAME>/

From AWS Lambda, paste an S3 link URL s3://<BUCKET-NAME>/<FOLDER-NAME>/lambda-layer.zip