@Marvin what is the values block: worker: apiConfig: selfHosted config: workPool: <target work pool name> selfHostedCloudApiConfig: # If the prefect server is located external to this cluster, set a fully qualified domain name as the apiUrl # If the prefect server pod is deployed to this cluster, use the cluster DNS endpoint: http//&lt;prefect server service name&gt;.&lt;namespace&gt;.svc.cluster.local<prefect-server-port>/api apiUrl: "https://<DNS of Self Hosted Cloud API>" accountId: <target account ID> workspaceId: <target workspace ID> uiUrl: "https://<DNS of Self Hosted Cloud UI>" for in the prefect-worker helm chart. what is selfHosted?

The

selfHosted

configuration under the

worker

section in the Prefect Helm chart is used to configure the worker to interact with a self-hosted Prefect server instead of Prefect Cloud. Here's what each part means: *

apiConfig: selfHosted

sets the worker to use a self-hosted API configuration. *

config.workPool

specifies the target work pool name. *

selfHostedCloudApiConfig.apiUrl

is the API URL of the self-hosted Prefect server. *

selfHostedCloudApiConfig.accountId

and

workspaceId

are used to specify the target account and workspace. *

selfHostedCloudApiConfig.uiUrl

is the URL for the self-hosted Prefect UI. This configuration is primarily useful when your Prefect server is hosted externally or within the same Kubernetes cluster but not using Prefect Cloud. For detailed guidance, you can refer to the following resources: 1. Deploying a worker using Helm: https://docs.prefect.io/latest/guides/deployment/kubernetes/ 2. Hosting a Prefect server instance: https://docs.prefect.io/latest/guides/host/

@Marvin there is a third option for apiConfig: server though. what is the differnce?

The

apiConfig

attribute in the Prefect Helm chart under the

worker

section can be configured with three options:

selfHosted

,

selfHostedCloudApiConfig

, and

server

. Here's the difference between them: 1. selfHosted: - Configures the worker to connect to a self-hosted Prefect server. - Requires detailed settings such as

apiUrl

,

accountId

,

workspaceId

, and

uiUrl

under

selfHostedCloudApiConfig

. 2. selfHostedCloudApiConfig: - A specialized form of

selfHosted

where the worker is configured to communicate with the Prefect Cloud-like instance that you host yourself. - It primarily contains the same settings as

selfHosted

but is used when you want fine-grained control over the specific cloud-like settings. 3. server: - Used when the worker needs to connect to a standard Prefect server instance, either local or remote. - The

PREFECT_API_URL

should be set to the appropriate URL of the Prefect server instance, for example,

<http://127.0.0.1:4200/api>

for a local instance. In summary: - Use selfHosted or selfHostedCloudApiConfig for connecting to a self-hosted server, with the latter being useful for cloud-like configurations. - Use server for general Prefect server instances. For more details: - Deploy a worker using Helm - Configure Prefect server settings

@Marvin how do i specify image pull secrets for our containerized flows in kuberntes

To specify image pull secrets for your containerized flows in Kubernetes with Prefect, add the

imagePullSecrets

section to your deployment's

values.yaml

file. Here is a sample configuration:

yaml
worker:
  apiConfig: selfHosted
  config:
    workPool: <target work pool name>
  selfHostedCloudApiConfig:
    apiUrl: "https://<DNS of Self Hosted Cloud API>"
    accountId: <target account ID>
    workspaceId: <target workspace ID>
    uiUrl: "https://<DNS of Self Hosted Cloud UI>"

## Specify image pull secrets
imagePullSecrets:
  - name: <your-image-pull-secret>

You also need to create a Kubernetes secret that contains the Docker registry credentials. For example:

sh
kubectl create secret docker-registry <your-image-pull-secret> \
--docker-server=<your-docker-registry> \
--docker-username=<your-username> \
--docker-password=<your-password> \
--namespace=<your-namespace>

For a detailed guide, you can refer to the Prefect Kubernetes deployment documentation. This setup ensures that Kubernetes can pull your Docker images using the specified credentials when executing Prefect flows. Sources: - Deploy a worker using Helm - Docker integration guide

how can i tell the job to use that secret?

To configure a Kubernetes job to use the image pull secret, you need to reference that secret in the

values.yaml

file under the worker configuration for your Prefect Helm chart. Here’s an example configuration that shows how to specify image pull secrets: 1. Add the

imagePullSecrets

section to your

values.yaml

file:

yaml
worker:
  apiConfig: selfHosted
  config:
    workPool: <target work pool name>
  selfHostedCloudApiConfig:
    apiUrl: "https://<DNS of Self Hosted Cloud API>"
    accountId: <target account ID>
    workspaceId: <target workspace ID>
    uiUrl: "https://<DNS of Self Hosted Cloud UI>"
  imagePullSecrets:
    - name: <your-image-pull-secret>

2. Ensure you have created the Kubernetes secret for your Docker registry credentials:

sh
kubectl create secret docker-registry <your-image-pull-secret> \
--docker-server=<your-docker-registry> \
--docker-username=<your-username> \
--docker-password=<your-password> \
--namespace=<your-namespace>

This configuration will ensure that Kubernetes uses the specified image pull secret for pulling images specified in your flow container. For in-depth guidance, refer to the following documentation: - Guide to deploying on Kubernetes - Guide to using Docker with Prefect