Noam
08/13/2024, 6:27 AMMarvin
08/13/2024, 6:27 AMprefect deploy --prefect-file prefect.yaml
from a directory that is not the project root. You can specify the path to the prefect.yaml
file using the --prefect-file
option.
For example:
prefect deploy --prefect-file path/to/your_directory/prefect.yaml
For further details, refer to the official Prefect documentation: https://docs.prefect.io/latest/guides/prefect-deploy/Noam
08/13/2024, 6:30 AMMarvin
08/13/2024, 6:30 AMentrypoint
path in your prefect.yaml
file must be relative to the root directory of your project.
Given your directory structure, you should specify the entrypoint
as:
insertion_model/main_using_prefect.py:main
Your prefect.yaml
should have a section like this:
deployments:
- name: your_deployment_name
entrypoint: insertion_model/main_using_prefect.py:main
...
Ensure that the path provided in entrypoint
accurately reflects the directory structure relative to the prefect.yaml
file location.
For more details, refer to the official documentation: https://docs.prefect.io/latest/guides/prefect-deploy/Noam
08/13/2024, 6:32 AMMarvin
08/13/2024, 6:32 AMNoam
08/13/2024, 11:12 AMMarvin
08/13/2024, 11:12 AMFROM prefecthq/prefect:2-latest
RUN pip install scikit-learn
2. Custom Base Image: You can create a custom base Dockerfile if your requirements are different.
Example:
FROM python:3.10
COPY ./requirements.txt /requirements.txt
RUN pip install -r /requirements.txt
For more detailed information, refer to the following guides:
- Prefect Deployment Guide: https://docs.prefect.io/latest/guides/prefect-deploy/
- Prefect Docker Guide: https://docs.prefect.io/latest/guides/docker/
Choose the option that best fits your deployment needs.Noam
08/13/2024, 11:12 AMMarvin
08/13/2024, 11:13 AMFROM prefecthq/prefect:2-latest
RUN pip install -r /path/to/your/requirements.txt
COPY . /path/to/your/project
2. Custom Base Image:
If you have custom dependencies, you can build your Dockerfile starting from a Python base image:
FROM python:3.10
COPY ./requirements.txt /requirements.txt
RUN pip install -r /requirements.txt
COPY . /path/to/your/project
Ensure your directory structure and paths in the Dockerfile
match the entry point specified in your prefect.yaml
.
For more details, refer to the Kubernetes deployment guide: https://docs.prefect.io/latest/guides/deployment/kubernetes/
This guide contains useful information for configuring your Kubernetes jobs, such as setting the namespace, image pull policies, and managing completed jobs.Noam
08/13/2024, 11:13 AMMarvin
08/13/2024, 11:13 AM/bin/sh: 0: cannot open prefect: No such file
typically indicates that the Prefect CLI is not installed or not available in the PATH within your Docker image. To resolve this, ensure you are installing Prefect in your Dockerfile.
Here’s an example Dockerfile for a Kubernetes job with Prefect:
FROM python:3.10
# Install Prefect
RUN pip install prefect
# Copy your project files
COPY . /app
WORKDIR /app
# Install dependencies
COPY requirements.txt .
RUN pip install -r requirements.txt
# Set the entrypoint
ENTRYPOINT ["prefect", "run", "-p"]
Ensure that you have a requirements.txt
file including any additional dependencies:
prefect
# other dependencies
For further details, refer to the Kubernetes deployment guide:
- Kubernetes deployment guide: https://docs.prefect.io/latest/guides/deployment/kubernetes/
If you encounter any issues, please refer to Prefect's GitHub discussions and issues for more specific troubleshooting.Noam
08/13/2024, 11:26 AMNoam
08/13/2024, 11:26 AMENTRYPOINT ["/bin/sh"]
Marvin
08/13/2024, 11:26 AMENTRYPOINT ["/bin/sh"]
line in your Dockerfile sets the entrypoint to /bin/sh
, but it doesn't specify any script or command to run. This is likely why you're encountering the "cannot open prefect: No such file" error.
Instead, you should specify the Prefect command as the entrypoint. Here’s an example Dockerfile that sets up Prefect for Kubernetes:
Dockerfile
FROM python:3.10
# Install Prefect
RUN pip install prefect
# Copy your project files
COPY . /app
WORKDIR /app
# Install dependencies
COPY requirements.txt .
RUN pip install -r requirements.txt
# Set the entrypoint to run a Prefect flow
ENTRYPOINT ["prefect", "flow-run", "-p", "path/to/your/prefect-flow-file.yaml"]
### Explanation:
1. Base Image: python:3.10
to have Python installed.
2. Install Prefect: RUN pip install prefect
to install Prefect CLI.
3. Copy Project Files: Copies your project files into the Docker image.
4. Set Working Directory: Sets the working directory to /app
.
5. Install Dependencies: Installs dependencies listed in requirements.txt
.
6. Entry Point: Sets the entrypoint to run Prefect.
Ensure the path/to/your/prefect-flow-file.yaml
matches your file structure. Adjust the paths as needed for your project.
For further details, you can consult the Prefect Kubernetes deployment guide: https://docs.prefect.io/latest/guides/deployment/kubernetes/Noam
08/13/2024, 11:39 AMMarvin
08/13/2024, 11:39 AMInvalid value for '[ID]': 'prefect' is not a valid UUID
suggests that you need to provide a valid flow run ID (UUID) when using the prefect flow-run execute
command.
### Correct Usage
The correct command requires a valid flow run ID. Here’s an example:
bash
prefect flow-run execute <VALID_FLOW_RUN_ID>
1. Create a Flow Run: First, you need to create a flow run to obtain its ID.
bash
prefect deployment run <deployment_name>
2. Get the Flow Run ID:
After creating the flow run, you can retrieve the flow run ID from the Prefect UI or by using the CLI:
bash
prefect flow-run ls
3. Execute the Flow Run:
Now, use the obtained flow run ID to execute it.
bash
prefect flow-run execute <VALID_FLOW_RUN_ID>
Note: Ensure that your PREFECT_API_KEY
and PREFECT_API_URL
are correctly configured:
bash
prefect config view
For more details, you can refer to the following guides:
- Connecting to Prefect Cloud: https://docs.prefect.io/latest/cloud/connecting/
- Flow Concepts: https://docs.prefect.io/latest/concepts/flows/
Make sure to replace <VALID_FLOW_RUN_ID>
with the actual UUID of the flow run you obtained.Noam
08/13/2024, 11:50 AMMarvin
08/13/2024, 11:50 AMprefecthq/prefect:2-python3.9-kubernetes
base image, it comes pre-configured with essential dependencies and configurations for running Prefect flows on Kubernetes. This includes:
1. Prefect Installed: The Prefect library and CLI are already installed.
2. Kubernetes Integration: The image is equipped with tools and libraries required to integrate smoothly with Kubernetes.
3. Optimized Configurations: Default configurations are set to optimize Prefect's performance and compatibility with Kubernetes environments.
This pre-setup mitigates the need for additional installations and configurations, allowing you to focus directly on your flow logic and deployments.
For further details, refer to the Kubernetes deployment guide: https://docs.prefect.io/latest/guides/deployment/kubernetes/Noam
08/13/2024, 11:54 AMMarvin
08/13/2024, 11:54 AMprefecthq/prefect
as the base image, which is optimized for Kubernetes:
Dockerfile
# Use Prefect base image for Kubernetes
FROM prefecthq/prefect:2-python3.9-kubernetes
# Set the working directory
WORKDIR /app
# Copy the requirements file and install dependencies
COPY requirements.txt .
RUN pip install -r requirements.txt
# Copy the rest of the application files
COPY . .
# Set the entrypoint to run Prefect commands
ENTRYPOINT ["prefect", "flow-run", "-p", "/app/flows/your_flow_file.py"]
#### 2. Build and Push the Docker Image
Build the Docker image:
bash
docker build -t your-docker-repo/your-image-name:tag .
Push the image to your Docker repository:
bash
docker push your-docker-repo/your-image-name:tag
#### 3. Configure Kubernetes Job
Create a Kubernetes job manifest file (job.yaml):
yaml
apiVersion: batch/v1
kind: Job
metadata:
name: prefect-job
spec:
template:
spec:
containers:
- name: prefect-container
image: your-docker-repo/your-image-name:tag
env:
- name: PREFECT_API_KEY
valueFrom:
secretKeyRef:
name: prefect-api-key
key: YOUR_API_KEY
command: ["prefect", "deployment", "run", "your-deployment-name"]
restartPolicy: Never
#### 4. Deploy the Job to Kubernetes
Apply the job manifest:
bash
kubectl apply -f job.yaml
### Additional Tips
1. Namespace: Ensure you set the Kubernetes namespace to create jobs within, such as prefect
. By default, it's set to default
.
2. Image Pull Policy: Select from the dropdown options to specify when to pull the image. Make sure to use unique image tags if using the IfNotPresent
policy to avoid old images getting cached.
3. Environment Variables: Securely manage and use environment variables like PREFECT_API_KEY
for accessing Prefect Cloud.
4. Finished Job TTL: Set a time-to-live (TTL) for finished jobs to automatically clean them up after completion to manage resources effectively.
For more detailed guidance, refer to the official Prefect Kubernetes deployment documentation:
https://docs.prefect.io/latest/guides/deployment/kubernetes/
These steps and best practices should help you efficiently create Docker images and run them as Kubernetes jobs with Prefect.Noam
08/13/2024, 6:23 PMMarvin
08/13/2024, 6:24 PMannotations
field under the metadata
section of the job definition.
Here is an example of a Kubernetes job manifest with annotations:
yaml
apiVersion: batch/v1
kind: Job
metadata:
name: prefect-job
annotations:
<http://example.com/annotation-key|example.com/annotation-key>: "annotation-value"
spec:
template:
metadata:
annotations:
<http://example.com/template-annotation-key|example.com/template-annotation-key>: "template-annotation-value"
spec:
containers:
- name: prefect-container
image: your-docker-repo/your-image-name:tag
env:
- name: PREFECT_API_KEY
valueFrom:
secretKeyRef:
name: prefect-api-key
key: YOUR_API_KEY
command: ["prefect", "deployment", "run", "your-deployment-name"]
restartPolicy: Never
### Explanation:
- Job-Level Annotations: These are specified under metadata
.
- Pod-Level Annotations: If you need annotations on the pod template itself (within the job), include them under template.metadata
.
### Applying the Job
To apply this job manifest with the annotations, run:
bash
kubectl apply -f job.yaml
These annotations can be useful for adding metadata, managing logging, monitoring, and other Kubernetes-native functionalities.
For more advanced configurations and additional details, you can refer to the Prefect Kubernetes integration guide:
- Prefect Kubernetes Worker: https://docs.prefect.io/latest/integrations/prefect-kubernetes/worker/
- Prefect Kubernetes Jobs: https://docs.prefect.io/latest/integrations/prefect-kubernetes/jobs/
These guides will offer further insights and options for customized Kubernetes job configurations.Noam
08/13/2024, 6:24 PMMarvin
08/13/2024, 6:25 PMannotations
field. Here's an example:
### Base Job Template JSON
json
{
"job_configuration": {
"apiVersion": "batch/v1",
"kind": "Job",
"metadata": {
"annotations": {
"<http://example.com/job-annotation-key|example.com/job-annotation-key>": "job-annotation-value"
}
},
"spec": {
"template": {
"metadata": {
"annotations": {
"<http://example.com/pod-annotation-key|example.com/pod-annotation-key>": "pod-annotation-value"
}
},
"spec": {
"containers": [
{
"name": "prefect-container",
"image": "your-docker-repo/your-image-name:tag",
"env": [
{
"name": "PREFECT_API_KEY",
"valueFrom": {
"secretKeyRef": {
"name": "prefect-api-key",
"key": "YOUR_API_KEY"
}
}
}
],
"command": ["prefect", "deployment", "run", "your-deployment-name"]
}
],
"restartPolicy": "Never"
}
}
}
},
"variables": {
// other variables if any
}
}
### Updating the Work Pool
To update your work pool with this base job template, save the above JSON to a file, say base-job-template.json
, and then run:
bash
prefect work-pool update --base-job-template base-job-template.json my-work-pool
Replace my-work-pool
with the name of your work pool.
### Applying the Job Template
This will update the work pool’s base job template to include the specified annotations. Any Kubernetes Job created by this work pool will now have the annotations specified.
For more detailed guidance, refer to the Prefect documentation on work-pools:
- Prefect Work Pools: https://docs.prefect.io/latest/concepts/work-pools/
This approach helps you manage job annotations effectively while using Prefect's work pools for Kubernetes deployments.Noam
08/13/2024, 6:42 PMMarvin
08/13/2024, 6:43 PMwhat im missing here?{ “variables”: { “type”: “object”, “properties”: { “env”: { “type”: “object”, “title”: “Environment Variables”, “description”: “Environment variables to set when starting a flow run.“, “additionalProperties”: { “type”: “string” } }, “name”: { “type”: “string”, “title”: “Name”, “description”: “Name given to infrastructure created by a worker.” }, “image”: { “type”: “string”, “title”: “Image”, “example”: “docker.io/prefecthq/prefect:2-latest”, “description”: “The image reference of a container image to use for created jobs. If not set, the latest Prefect image will be used.” }, “labels”: { “type”: “object”, “title”: “Labels”, “description”: “Labels applied to infrastructure created by a worker.“, “additionalProperties”: { “type”: “string” } }, “command”: { “type”: “string”, “title”: “Command”, “description”: “The command to use when starting a flow run. In most cases
Noam
08/13/2024, 6:43 PMMarvin
08/13/2024, 6:43 PMwhat im missing here“job_configuration”: { “env”: “{{ env }}“, “name”: “{{ name }}“, “labels”: “{{ labels }}“, “command”: “{{ command }}“, “namespace”: “{{ namespace }}“, “job_manifest”: { “kind”: “Job”, “spec”: { “template”: { “spec”: { “containers”: [ { “env”: “{{ env }}“, “args”: “{{ command }}“, “name”: “prefect-job”, “image”: “{{ image }}“, “resources”: { “limits”: { “cpu”: “{{ cpu_limit }}“, “memory”: “{{ memory_limit }}” }, “requests”: { “cpu”: “{{ cpu_request }}“, “memory”: “{{ memory_request }}” } }, “imagePullPolicy”: “{{ image_pull_policy }}” } ], “completions”: 1, “parallelism”: 1, “restartPolicy”: “Never”, “serviceAccountName”: “{{ service_account_name }}” } }, “backoffLimit”: 0, “ttlSecondsAfterFinished”: “{{ finished_job_ttl }}” }, “metadata”: { “labels”: “{{ labels }}“,
Noam
08/13/2024, 6:44 PMMarvin
08/13/2024, 6:44 PM“job_manifest”: {“kind”: “Job”, “spec”: { “template”: { “spec”: { “containers”: [ { “env”: “{{ env }}“, “args”: “{{ command }}“, “name”: “prefect-job”, “image”: “{{ image }}“, “resources”: { “limits”: { “cpu”: “{{ cpu_limit }}“, “memory”: “{{ memory_limit }}” }, “requests”: { “cpu”: “{{ cpu_request }}“, “memory”: “{{ memory_request }}” } }, “imagePullPolicy”: “{{ image_pull_policy }}” } ], “completions”: 1, “parallelism”: 1, “restartPolicy”: “Never”, “serviceAccountName”: “{{ service_account_name }}” } }, “backoffLimit”: 0, “ttlSecondsAfterFinished”: “{{ finished_job_ttl }}” }, “metadata”: { “labels”: “{{ labels }}“, “namespace”: “{{ namespace }}“, “annotations”: { “eks.amazonaws.com/role-arn”: “arnawsiam:091061493057role/algo-prefect-dev-use1” },
Noam
08/13/2024, 6:45 PMMarvin
08/13/2024, 6:45 PMjson
{
"job_configuration": {
"kind": "Job",
"metadata": {
"generateName": "{{ name }}-",
"namespace": "{{ namespace }}",
"labels": "{{ labels }}",
"annotations": {
"<http://eks.amazonaws.com/role-arn|eks.amazonaws.com/role-arn>": "arn:aws:iam::091061493057:role/algo-prefect-dev-use1"
}
},
"spec": {
"completions": 1,
"parallelism": 1,
"backoffLimit": 0,
"ttlSecondsAfterFinished": "{{ finished_job_ttl }}",
"template": {
"metadata": {
"annotations": {
"<http://eks.amazonaws.com/role-arn|eks.amazonaws.com/role-arn>": "arn:aws:iam::091061493057:role/algo-prefect-dev-use1"
}
},
"spec": {
"containers": [
{
"name": "prefect-container",
"image": "your-docker-repo/your-image-name:tag",
"imagePullPolicy": "{{ image_pull_policy }}",
"env": [
{
"name": "PREFECT_API_KEY",
"valueFrom": {
"secretKeyRef": {
"name": "prefect-api-key",
"key": "YOUR_API_KEY"
}
}
}
],
"command": ["prefect", "deployment", "run", "your-deployment-name"]
}
],
"restartPolicy": "Never",
"serviceAccountName": "{{ service_account_name }}"
}
}
}
},
"variables": {
// other variables if any
}
}
### Explanation:
- Annotations: Added to both the job’s metadata and the pod’s metadata within the template.
- Placeholders: Defined using Jinja templates (e.g., {{ name }}
, {{ namespace }}
) for dynamic substitution.
### Applying the Configuration
Save this JSON configuration to a file, say base-job-template.json
, and update your work pool using the command:
bash
prefect work-pool update --base-job-template base-job-template.json my-work-pool
Adjust the placeholders and specific values as needed for your environment. This will ensure your Kubernetes jobs created by Prefect’s work pool are annotated properly.
For additional information, check the Prefect work pools documentation: https://docs.prefect.io/latest/concepts/work-pools/