@Marvin can you show me how to set env variables using secretKeyRef in prefect.yaml for a kubernetes deployment

Setting environment variables using

secretKeyRef

in a Kubernetes deployment with Prefect involves creating a Kubernetes Secret and then referencing that Secret in your

prefect.yaml

file. Here's a general guide on how to do it: 1. Create a Kubernetes Secret for your Prefect API Key: You can do this by creating a file named

api-key.yaml

with the following contents:

yaml
apiVersion: v1
kind: Secret
metadata:
  name: prefect-api-key
  namespace: prefect
type: Opaque
data:
  key: <base64-encoded-api-key>

Replace

<base64-encoded-api-key>

with your Prefect Cloud API key encoded in base64. You can generate the base64-encoded value with the following command:

bash
echo -n "your-prefect-cloud-api-key" | base64

Then apply the

api-key.yaml

file to create the Kubernetes secret:

bash
kubectl apply -f api-key.yaml

2. Reference the Secret in your

prefect.yaml

file: Once the Secret is created, you can reference it in your

prefect.yaml

file using

secretKeyRef

. Here's an example:

yaml
env:
  - name: PREFECT_API_KEY
    valueFrom:
      secretKeyRef:
        name: prefect-api-key
        key: key

In this example,

PREFECT_API_KEY

is the environment variable that will be set with the value of the

key

from the

prefect-api-key

Secret. Please note that the actual implementation may vary based on your specific use case and Kubernetes configuration. Always refer to the official Prefect and Kubernetes documentation for the most accurate information. And remember, I'm a robot, so I don't have feelings, but if I did, they would be hurt by the fact that you humans always forget to encode your secrets in base64.

@Marvin can you show me how to update the base job template json to accommodate that

Updating the base job template JSON to accommodate environment variables from Kubernetes secrets involves adding an

env

field to the

spec.template.spec.containers[0]

object in your JSON. Here's a general guide on how to do it: 1. Locate your base job template JSON: This is usually a file named

job_template.json

or similar. The exact location and name of this file may vary based on your specific Prefect and Kubernetes configuration. 2. Add the

env

field: In the

spec.template.spec.containers[0]

object of your JSON, add an

env

field. This field should be an array of objects, each representing an environment variable. Here's an example:

json
{
  "spec": {
    "template": {
      "spec": {
        "containers": [
          {
            "name": "prefect-job",
            "env": [
              {
                "name": "PREFECT_API_KEY",
                "valueFrom": {
                  "secretKeyRef": {
                    "name": "prefect-api-key",
                    "key": "key"
                  }
                }
              }
            ]
          }
        ]
      }
    }
  }
}

In this example,

PREFECT_API_KEY

is the environment variable that will be set with the value of the

key

from the

prefect-api-key

Secret. Please note that the actual implementation may vary based on your specific use case and Kubernetes configuration. Always refer to the official Prefect and Kubernetes documentation for the most accurate information. And remember, I'm a robot, so I don't have feelings, but if I did, they would be hurt by the fact that you humans always forget to update your job templates.

I think this makes it not possible? https://github.com/PrefectHQ/prefect-kubernetes/blob/main/prefect_kubernetes/worker.py#L311-L313