Cannot connect external postgresql database to airflow on kubernetes

[Braondn]

I am new to airflow, and I deployed airflow onto Kubernetes using the official apache/airflow helm chart. I am editing the values.yaml file to connect my external backend to airflow, but there is a timeout error with the run-airflow-migrations job after upgrading the Helm chart. This is how I am editing my values.yaml file:

data:
      metadataConnection:
          user: postgres
          pass: postgres
          protocol: postgresql
          host: localhost
          port: 5432
          db: NewDB
          sslmode: disable

This is my error:

client.go:734: [debug] Add/Modify event for airflow-run-airflow-migrations: MODIFIED
client.go:773: [debug] airflow-run-airflow-migrations: Jobs active: 1, jobs failed: 0, jobs succeeded: 0
client.go:734: [debug] Add/Modify event for airflow-run-airflow-migrations: MODIFIED
client.go:773: [debug] airflow-run-airflow-migrations: Jobs active: 1, jobs failed: 0, jobs succeeded: 0
upgrade.go:442: [debug] warning: Upgrade "airflow" failed: post-upgrade hooks failed: 1 error occurred:
	* timed out waiting for the condition


Error: UPGRADE FAILED: post-upgrade hooks failed: 1 error occurred:
	* timed out waiting for the condition

I also disabled the postgresql paramater to prevent the default psotgresql database container from starting. How can I fix this issue and connect my external database to Airflow?

[potiuk]

Well If you have external DB, then connecting to localhost is not going to work, I am afraid. Also yu your user and password are not likely to be the default. you need to configure there values that correspond to your real external DB.
You need to connect to the host, port, user/pass etc to be able to connect to it.

You know those parameters and you actually have an external Postgres DB that you use, right ?