circle.yml

machine:
  environment:
    CURRENT_IP: $(dig +short myip.opendns.com @resolver1.opendns.com)

dependencies:
  override:
    - pip install -r requirements.txt

    # also install awscli tools
    - pip install awscli==1.7.36

test:
  pre:
    # add current circleci instance public IP to AWS security group to be able to ssh a worker machine
    - aws ec2 authorize-security-group-ingress --region=YOUR_AWS_REGION --group-name YOUR_SECURITY_GROUP_NAME --protocol tcp --port 22 --cidr $CURRENT_IP/32

    # ssh tunnel to access AWS redshift for tests
    - ssh -nNT -L YOUR_LOCAL_PORT:YOUR_REDSFHIT_HOST:YOUR_REDSHIFT_PORT YOUR_USER@YOUR_EC2_INSTANCE_IP:
      background: true

  post:
     - aws ec2 revoke-security-group-ingress --region=YOUR_AWS_REGION --group-name YOUR_SECURITY_GROUP_NAME --protocol tcp --port 22 --cidr $CURRENT_IP/32