Set Variables for Airflow during Helm install - kubernetes

Question

I'm installing Airflow on kind with the following command:
export RELEASE_NAME=first-release
export NAMESPACE=airflow
helm install $RELEASE_NAME apache-airflow/airflow --namespace $NAMESPACE \
--set images.airflow.repository=my-dags \
--set images.airflow.tag=0.0.1 \
--values env.yaml
Andthe file env.yaml looks like the below:
env:
- name: "AIRFLOW_VAR_KEY"
value: "value_1"
But from the Web UI (when I go to Admins --> Variables), these credentials don't appear there.
How do I pass these credentials during helm install? Thanks!
UPDATE: It turns out that the environment variable was set successfully. However it doesn't show up on the Web UI

Answer 1

i am not sure how your full env.yaml file is
but to set the environment variables in Airflow
## environment variables for the web/scheduler/worker Pods (for airflow configs)
##
## WARNING:
## - don't include sensitive variables in here, instead make use of `airflow.extraEnv` with Secrets
## - don't specify `AIRFLOW__CORE__SQL_ALCHEMY_CONN`, `AIRFLOW__CELERY__RESULT_BACKEND`,
## or `AIRFLOW__CELERY__BROKER_URL`, they are dynamically created from chart values
##
## NOTE:
## - airflow allows environment configs to be set as environment variables
## - they take the form: AIRFLOW__<section>__<key>
## - see the Airflow documentation: https://airflow.apache.org/docs/stable/howto/set-config.html
##
## EXAMPLE:
## config:
## ## Security
## AIRFLOW__CORE__SECURE_MODE: "True"
## AIRFLOW__API__AUTH_BACKEND: "airflow.api.auth.backend.deny_all"
Reference file
and after that you have to run your command and further your DAG will be able to access the variables.
Helm documentation : https://github.com/helm/charts/tree/master/stable/airflow#docs-airflow---configs
Make sure you are configuring section : airflow.config

Answer 2

Okay, so I've figured this one out: The environment variables are set just nicely on the pods. However, this will not appear on the Web UI.
Workaround: to make it appear in the web UI, I will have to go into the Scheduler pod and import the variables. It can be done with a bash script.
# Get the name of scheduler pod
export SCHEDULER_POD_NAME="$(kubectl get pods --no-headers -o custom-columns=":metadata.name" -n airflow | grep scheduler)"
# Copy variables to the scheduler pod
kubectl cp ./variables.json airflow/$SCHEDULER_POD_NAME:./
# Import variables to scheduler with airflow command
kubectl -n $NAMESPACE exec $SCHEDULER_POD_NAME -- airflow variables import variables.json