Here's how to run a Prefect worker on a Kubernetes cluster: 1. First, add the Prefect Helm repository and update it:

bash
helm repo add prefect <https://prefecthq.github.io/prefect-helm>
helm repo update

2. Create a Kubernetes secret for your Prefect API key:

bash
kubectl create secret generic prefect-api-key \
  --from-literal=PREFECT_API_KEY=<your-api-key>

3. Create a

values.yaml

file to configure your worker:

yaml
worker:
  enabled: true
  workPool: "your-work-pool-name"
  prefectApiKey:
    existingSecret: prefect-api-key
    key: PREFECT_API_KEY

4. Install the worker using Helm:

bash
helm install prefect-worker prefect/prefect-worker \
  -f values.yaml \
  --namespace your-namespace

Additional Configuration Options: 1. Resource Requests/Limits: You can specify CPU and memory requirements in your values.yaml:

yaml
worker:
  resources:
    requests:
      cpu: "500m"
      memory: "512Mi"
    limits:
      cpu: "1000m"
      memory: "1Gi"

2. Worker Settings: You can configure worker-specific settings:

yaml
worker:
  workQueues: ["default"]  # Specific work queues to pull from
  prefetchSeconds: 600     # How far ahead to prefetch scheduled runs
  type: "process"         # Worker type (process or thread)

3. Base Job Template: For more control over how your flow runs are executed, you can modify the base job template through the worker configuration. Important Notes: - Ensure your Kubernetes cluster has the necessary permissions to create and manage pods - The worker needs network access to both your Prefect API and any resources required by your flows - Consider using node selectors or tolerations if you need to run workloads on specific nodes - Monitor the worker pods using

kubectl logs

to troubleshoot any issues For more detailed information, you can refer to: - The official Kubernetes deployment guide: https://docs-3.prefect.io/v3/how-to-guides/deployment_infra/kubernetes - Example implementations: https://github.com/zzstoatzz/prefect-pack/tree/main/examples/run_a_prefect_worker/on_k8s/README.md

Based on the common issues I'm seeing, the problem is likely related to missing RBAC (Role-Based Access Control) permissions in your Kubernetes cluster. The worker needs specific permissions to create and manage jobs. Here's how to fix it: 1. First, create a file named

rbac.yaml

with the following content:

yaml
apiVersion: <http://rbac.authorization.k8s.io/v1|rbac.authorization.k8s.io/v1>
kind: ClusterRole
metadata:
  name: prefect-worker-role
rules:
- apiGroups: ["batch"]
  resources: ["jobs"]
  verbs: ["create", "get", "list", "watch", "delete"]
- apiGroups: [""]
  resources: ["pods", "pods/log", "namespaces"]
  verbs: ["get", "list", "watch"]
- apiGroups: [<http://apiextensions.k8s.io|apiextensions.k8s.io>]
  resources: [customresourcedefinitions]
  verbs: [get, list, watch]
---
apiVersion: <http://rbac.authorization.k8s.io/v1|rbac.authorization.k8s.io/v1>
kind: ClusterRoleBinding
metadata:
  name: prefect-worker-rolebinding
subjects:
- kind: ServiceAccount
  name: prefect-worker
  namespace: your-namespace  # Replace with your namespace
roleRef:
  apiGroup: <http://rbac.authorization.k8s.io|rbac.authorization.k8s.io>
  kind: ClusterRole
  name: prefect-worker-role

2. Apply the RBAC configuration:

bash
kubectl apply -f rbac.yaml

3. Update your

values.yaml

to specify the service account:

yaml
worker:
  enabled: true
  workPool: "your-work-pool-name"
  serviceAccount:
    create: true
    name: prefect-worker
  prefectApiKey:
    existingSecret: prefect-api-key
    key: PREFECT_API_KEY

4. Upgrade or reinstall your Helm deployment:

bash
helm upgrade --install prefect-worker prefect/prefect-worker \
  -f values.yaml \
  --namespace your-namespace

5. Verify the worker pod is running:

bash
kubectl get pods -n your-namespace

6. Check the worker logs for any errors:

bash
kubectl logs -l <http://app.kubernetes.io/name=prefect-worker|app.kubernetes.io/name=prefect-worker> -n your-namespace

Common Troubleshooting Steps: 1. Make sure the namespace exists:

bash
kubectl create namespace your-namespace  # if it doesn't exist

2. Verify the secret exists:

bash
kubectl get secret prefect-api-key -n your-namespace

3. Check if the service account was created:

bash
kubectl get serviceaccount prefect-worker -n your-namespace

If you're still experiencing issues, please share: 1. The output of

kubectl get pods -n your-namespace

2. Any error messages from the worker pod logs 3. The version of Prefect you're using (

prefect version

) This will help me provide more specific guidance for your situation.

The issue is that you need to explicitly create the ServiceAccount first before applying the RBAC rules. The RBAC configuration references a ServiceAccount that doesn't exist yet. Let's fix this by modifying your RBAC configuration. Update your

rbac.yaml

to include the ServiceAccount definition at the top:

yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  name: prefect-worker
  namespace: proofpoint
---
apiVersion: <http://rbac.authorization.k8s.io/v1|rbac.authorization.k8s.io/v1>
kind: ClusterRole
metadata:
  name: prefect-worker-role
rules:
- apiGroups: ["batch"]
  resources: ["jobs"]
  verbs: ["create", "get", "list", "watch", "delete"]
- apiGroups: [""]
  resources: ["pods", "pods/log", "namespaces"]
  verbs: ["get", "list", "watch"]
- apiGroups: [<http://apiextensions.k8s.io|apiextensions.k8s.io>]
  resources: [customresourcedefinitions]
  verbs: [get, list, watch]
---
apiVersion: <http://rbac.authorization.k8s.io/v1|rbac.authorization.k8s.io/v1>
kind: ClusterRoleBinding
metadata:
  name: prefect-worker-rolebinding
subjects:
- kind: ServiceAccount
  name: prefect-worker
  namespace: proofpoint
roleRef:
  apiGroup: <http://rbac.authorization.k8s.io|rbac.authorization.k8s.io>
  kind: ClusterRole
  name: prefect-worker-role

Then, follow these steps: 1. First, ensure the namespace exists:

bash
kubectl create namespace proofpoint

2. Apply the updated RBAC configuration:

bash
kubectl apply -f rbac.yaml

3. Verify the resources were created:

bash
kubectl get serviceaccount prefect-worker -n proofpoint
kubectl get clusterrole prefect-worker-role
kubectl get clusterrolebinding prefect-worker-rolebinding

If you're still experiencing issues, please share: 1. The exact error message you're getting 2. The output of the verification commands above 3. The output of

kubectl describe serviceaccount prefect-worker -n proofpoint

This will help me identify any specific permissions or configuration issues that might be preventing the service account creation.

There are a few potential issues to address. Let me help you fix the configuration: 1. First, your values.yaml has some issues: - The API key should be stored in a secret, not directly in the values file - The indentation appears incorrect (though this might be just in how it was pasted) Here's how to set this up correctly: 1. First, create the API key secret (if you haven't already):

bash
kubectl create secret generic prefect-api-key \
  --from-literal=PREFECT_API_KEY=your-api-key-here \
  --namespace proofpoint

2. Update your values.yaml to look like this:

yaml
worker:
  enabled: true
  workPool: "proofpoint"
  serviceAccount:
    create: false  # Set to false since we created it manually
    name: prefect-worker
  prefectApiKey:
    existingSecret: prefect-api-key
    key: PREFECT_API_KEY

3. If you already have a failed installation, remove it:

bash
helm uninstall prefect-worker --namespace proofpoint

4. Install the worker:

bash
helm install prefect-worker prefect/prefect-worker \
  -f values.yaml \
  --namespace proofpoint

5. Check the status:

bash
kubectl get pods -n proofpoint

6. If the pod isn't starting properly, check the logs:

bash
kubectl logs -l <http://app.kubernetes.io/name=prefect-worker|app.kubernetes.io/name=prefect-worker> -n proofpoint

Could you please run these commands and share: 1. The output of

kubectl get pods -n proofpoint

2. Any error messages from the worker pod logs 3. The output of

kubectl describe pod <pod-name> -n proofpoint

(replace <pod-name> with the actual pod name from step 1) This will help me identify exactly what's preventing the worker from starting properly. Also, make sure: 1. Your Prefect API key is correct and has the necessary permissions 2. The work pool "proofpoint" exists in your Prefect server/cloud 3. You can connect to your Prefect server/cloud from the cluster network

Let's troubleshoot this step by step. If no pods are being created, we need to check why the Helm deployment isn't creating the worker pod. 1. First, let's check if the Helm release is actually installed:

bash
helm list -n proofpoint

2. Let's check for any events in the namespace:

bash
kubectl get events -n proofpoint

3. Let's verify the Helm chart values are being applied correctly:

bash
helm get values prefect-worker -n proofpoint

4. Let's also check if the secret exists:

bash
kubectl get secrets -n proofpoint

Could you please run these commands and share their output? This will help us understand: - If the Helm chart was actually installed - If there are any error events preventing pod creation - If the secret with your API key exists - If the values are being properly applied Also, let's verify your current values.yaml is exactly like this (please create a new file with these exact contents):

yaml
worker:
  enabled: true
  workPool: "proofpoint"
  serviceAccount:
    create: false
    name: prefect-worker
  prefectApiKey:
    existingSecret: prefect-api-key
    key: PREFECT_API_KEY
  resources:
    requests:
      cpu: "100m"
      memory: "128Mi"
    limits:
      cpu: "500m"
      memory: "512Mi"

Then try these steps: 1. First, remove the existing Helm release:

bash
helm uninstall prefect-worker -n proofpoint

2. Verify the API key secret exists (if not, create it):

bash
kubectl create secret generic prefect-api-key \
  --from-literal=PREFECT_API_KEY=your-actual-api-key \
  --namespace proofpoint

3. Install the worker with debug output:

bash
helm install prefect-worker prefect/prefect-worker \
  -f values.yaml \
  --namespace proofpoint \
  --debug

Please share: 1. The output of all the verification commands above 2. Any error messages from the helm install --debug command 3. Confirm whether you've created the work pool named "proofpoint" in your Prefect server/cloud This will help us identify exactly where the deployment is failing.

No, that's not expected - if

helm list -n proofpoint

returns no results, it means the Helm installation failed or wasn't completed. Let's verify the Helm repository is properly set up and then try the installation again with more verbose output. 1. First, let's make sure the Prefect Helm repository is properly added and updated:

bash
helm repo add prefect <https://prefecthq.github.io/prefect-helm>
helm repo update

2. Verify the repository is available:

bash
helm repo list

3. Let's try installing with debug output to see what's going wrong:

bash
helm install prefect-worker prefect/prefect-worker \
  -f values.yaml \
  --namespace proofpoint \
  --debug

4. Also, let's verify the namespace exists and is ready:

bash
kubectl get namespace proofpoint

Could you please: 1. Run these commands in order 2. Share any error messages you see, especially from the helm install command with --debug flag 3. Confirm that you see the prefect repository in the

helm repo list

output The fact that the installation isn't showing up in

helm list

suggests that either: - The installation is failing silently - There might be an issue with Helm's access to the cluster - The namespace might not exist or might have issues Once you share the output from these commands, we can identify exactly where the process is breaking down and fix it.

Ah, that's the core issue - Helm isn't installed on your system. Let's install Helm first. The installation process depends on your operating system. For Windows: 1. Using Chocolatey (recommended):

powershell
choco install kubernetes-helm

OR 2. Using Windows PowerShell:

powershell
# Download the installer script
wget <https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3> -OutFile get-helm-3.ps1
# Run the installer script
./get-helm-3.ps1

For macOS:

bash
# Using Homebrew
brew install helm

For Linux:

bash
# Using curl
curl <https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3> | bash

After installation, verify Helm is installed correctly:

bash
helm version

Then proceed with the previous steps:

bash
# Add the Prefect repository
helm repo add prefect <https://prefecthq.github.io/prefect-helm>

# Update the repositories
helm repo update

# Install the worker
helm install prefect-worker prefect/prefect-worker \
  -f values.yaml \
  --namespace proofpoint

Please: 1. Install Helm using the appropriate method for your operating system 2. Run

helm version

to verify the installation 3. Let me know if you encounter any issues during the installation Once Helm is properly installed, we can proceed with setting up the Prefect worker.

The issue is that even though Helm is installed, it's not added to your system's PATH environment variable. Let's fix this on Windows. 1. First, Helm is typically installed in one of these locations:

C:\Program Files\Helm
C:\ProgramData\chocolatey\bin

2. You need to add the Helm installation directory to your PATH. Here's how: a. Press Windows key + X and select "System" b. Click on "Advanced system settings" on the right c. Click "Environment Variables" button at the bottom d. Under "System Variables" (bottom section), find and select "Path" e. Click "Edit" f. Click "New" g. Add the Helm installation directory (likely

C:\Program Files\Helm

) h. Click "OK" on all windows to save 3. Important: Close and reopen your command prompt/PowerShell window for the PATH changes to take effect. Alternative Installation Method: If you'd prefer, you can try installing Helm using Chocolatey instead, which usually handles PATH setup automatically: 1. First, install Chocolatey if you don't have it:

powershell
Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('<https://community.chocolatey.org/install.ps1>'))

2. Then install Helm:

powershell
choco install kubernetes-helm

After trying either method: 1. Open a new command prompt or PowerShell window 2. Run

helm version

to verify the installation Please try these steps and let me know: 1. Which method you used (PATH update or Chocolatey) 2. If you're still getting the 'not recognized' error 3. If you can see the Helm installation directory in the location mentioned above