Here's how to configure your base job template to load environment variables from both a ConfigMap and a Secret in your Kubernetes pods. You'll need to modify your work pool configuration or deployment configuration to include these settings. Here's an example of a base job template that incorporates both ConfigMap and Secret environment variables:

yaml
kubernetes_job:
  spec:
    template:
      spec:
        containers:
          - name: prefect-job
            envFrom:
              - configMapRef:
                  name: your-configmap-name
              - secretRef:
                  name: your-secret-name
            # You can also specify individual environment variables if needed
            env:
              - name: SPECIFIC_VAR
                valueFrom:
                  configMapKeyRef:
                    name: your-configmap-name
                    key: specific-key
              - name: SPECIFIC_SECRET
                valueFrom:
                  secretKeyRef:
                    name: your-secret-name
                    key: specific-secret-key

You can apply this configuration in two ways: 1. Work Pool Level: When creating or updating your Kubernetes work pool:

bash
prefect work-pool create my-k8s-pool \
  --type kubernetes \
  --base-job-template path/to/base-job-template.yaml

2. Deployment Level: In your

prefect.yaml

deployment configuration:

yaml
deployments:
  - name: my-deployment
    version: null
    tags: []
    description: null
    schedule: null
    flow_name: null
    entrypoint: null
    parameters: {}
    work_pool:
      name: my-k8s-pool
      job_variables:
        kubernetes_job:
          spec:
            template:
              spec:
                containers:
                  - name: prefect-job
                    envFrom:
                      - configMapRef:
                          name: your-configmap-name
                      - secretRef:
                          name: your-secret-name

A few important notes: 1. Replace

your-configmap-name

and

your-secret-name

with your actual ConfigMap and Secret names 2. The ConfigMap and Secret must exist in the same namespace as your flow runs 3. The Kubernetes service account used by the worker must have permissions to read the ConfigMap and Secret 4. You can use both

envFrom

to load all variables from a ConfigMap/Secret, or

env

with specific keys for more granular control For more details on customizing deployments and infrastructure, you can refer to the Kubernetes infrastructure guide and deployment customization guide.

Here's the JSON structure you need to add to the

variables

section of your base job template to load environment variables using `envFrom`:

json
{
  "variables": {
    "kubernetes_job": {
      "spec": {
        "template": {
          "spec": {
            "containers": [
              {
                "name": "prefect-job",
                "envFrom": [
                  {
                    "configMapRef": {
                      "name": "your-configmap-name"
                    }
                  },
                  {
                    "secretRef": {
                      "name": "your-secret-name"
                    }
                  }
                ]
              }
            ]
          }
        }
      }
    }
  }
}

This configuration will: 1. Load all key-value pairs from the ConfigMap named

your-configmap-name

as environment variables 2. Load all key-value pairs from the Secret named

your-secret-name

as environment variables Remember to: - Replace

your-configmap-name

with your actual ConfigMap name - Replace

your-secret-name

with your actual Secret name - Ensure the ConfigMap and Secret exist in the same namespace as your flow runs - Verify the Kubernetes service account has the necessary permissions to read these resources The environment variables will be available to your flow code when it runs in the Kubernetes pod.

You're right - the documentation about the base job template structure is not as comprehensive as it should be. The current documentation mainly focuses on high-level concepts rather than providing detailed reference for the template structure. The base job template follows the standard Kubernetes Job specification format, but there isn't a complete reference in the Prefect docs showing all available options. Here's what you can do to better understand the structure: 1. View Default Template: You can see the default template by creating a new Kubernetes work pool in the UI and viewing its configuration. 2. Reference Sources: - The Kubernetes Job API Reference shows all available fields - The Prefect Kubernetes guide shows some common configurations 3. Common Sections: The most commonly configured sections include:

json
   {
     "variables": {
       "kubernetes_job": {
         "metadata": {
           "labels": {},
           "annotations": {}
         },
         "spec": {
           "template": {
             "spec": {
               "containers": [{
                 "name": "prefect-job",
                 "image": "...",
                 "resources": {
                   "requests": {},
                   "limits": {}
                 },
                 "env": [],
                 "envFrom": []
               }],
               "imagePullSecrets": [],
               "serviceAccountName": "..."
             }
           }
         }
       }
     }
   }

I'll create a GitHub issue to request more comprehensive documentation about the base job template structure. In the meantime, you can use the Kubernetes Job specification as a reference for available fields, as the template follows the same structure. Would you like me to explain any specific parts of the template structure in more detail?