Unable to set user defined environment variable in KC

[williamyeungforsure]

Hi there,
I am trying to set the namespace as an environment variable in KafkaConnect, so that I could use it to format a string that would be used in the KafkaConnector's spec.config like this: "postgresql-ha-${NAMESPACE}"
At first, I defined it inside KafkaConnect's externalConfiguration.env using Downward API like this:

- name: NAMESPACE
   valueFrom:
       fieldRef:
         fieldPath: metadata.namespace

However, seems like Strimzi API does not support this fieldRef syntax. I got such error here:

error validating data: ValidationError(KafkaConnect.spec.externalConfiguration.env[0].valueFrom): unknown field "fieldRef" in io.strimzi.kafka.v1beta2.KafkaConnect.spec.externalConfiguration.env.valueFrom

Does anyone know there's a way to set a user defined environment variable in KafkaConnect? Or is there a way to get the namespace of the deployed KafkaConnector pod? Thanks a lot.

[scholzj]

You can set environment variables either by setting the value directly or based on Secrets or ConfigMaps. You cannot set them based on the Downward API.