export GOOGLE_CLOUD_PROJECT="project-name"

export MYSQL_CONNECTION_NAME="project:region:instance"

export MYSQL_USER="mysql-user"

export MYSQL_PASS="mysql-password"

export MYSQL_DB="mysql-db-name"

export POSTGRES_CONNECTION_NAME="project:region:instance"

export POSTGRES_USER="postgres-user"

export POSTGRES_PASS="postgres-password"

export POSTGRES_DB="postgres-db-name"

export POSTGRES_USER_IAM="some-user-with-db-access@example.com"

export SQLSERVER_CONNECTION_NAME="project:region:instance"

export SQLSERVER_USER="sqlserver-user"

export SQLSERVER_PASS="sqlserver-password"

export SQLSERVER_DB="sqlserver-db-name"

export GOOGLE_APPLICATION_CREDENTIALS=/path/to/key.json

# Requires the impersonating IAM principal to have

# roles/iam.serviceAccountTokenCreator

export IMPERSONATED_USER="some-user-with-db-access@example.com"