Issue with ExternalDatabase and strange AIRFLOW__DATABASE__SQL_ALCHEMY_CONN

[RafaelAMello]

Hi I'm looking to deploy latest with a custom image and an external database

I've built an image and deployed it plus deploying with this command:

helm upgrade --force \
    --install airflow apache-airflow/airflow \
    --namespace airflow --create-namespace \
    --values values.yaml

values.yaml

images:
  airflow:
    repository: ID.dkr.ecr.ap-southeast-2.amazonaws.com/careabout-airflow
    tag: latest

ingress:
  enabled: false

postgresql:
  enabled: false

pgbouncer:
  enabled: false

externalDatabase:
  type: postgres
  host: HOST
  port: 5432
  database: airflow

  user: airflow
  password: XXXX

Whatever I do though the run migrations job gets stuck:

with environment variables:

Environment variables
PYTHONUNBUFFERED=1
AIRFLOW__CORE__FERNET_KEY=airflow-fernet-key.fernet-key
AIRFLOW_HOME=/opt/airflow
AIRFLOW__CORE__SQL_ALCHEMY_CONN=airflow-metadata.connection
AIRFLOW__DATABASE__SQL_ALCHEMY_CONN=airflow-metadata.connection
AIRFLOW_CONN_AIRFLOW_DB=airflow-metadata.connection
AIRFLOW__API__SECRET_KEY=airflow-api-secret-key.api-secret-key
AIRFLOW__API_AUTH__JWT_SECRET=airflow-jwt-secret.jwt-secret
AIRFLOW__CELERY__BROKER_URL=airflow-broker-url.connection

The result is a AIRFLOW__DATABASE__SQL_ALCHEMY_CONN that looks like this:

postgresql://postgres:[email protected]:5432/postgres?sslmode=disable

Why? How can I configure this?