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<@ULVA73B9P> I have created prefect cloud account ...
# ask-marvin
a
@Marvin I have created prefect cloud account and agent on ec2 instance How can I configure each other
m
To configure your Prefect Cloud account and agent on an EC2 instance, follow these steps: 1. Sign in to Prefect Cloud: Ensure you have an account and are logged in to Prefect Cloud. 2. Set up a Work Pool: - Within Prefect Cloud, create a work pool which your EC2 agent will use. For example, you might name it my-ec2-pool. 3. Configure the Agent on EC2: - Environment Variables: Ensure the following environment variables are set on your EC2 instance: - `PREFECT_API_URL`: The URL to your Prefect Cloud API. - `PREFECT_API_KEY`: Your Prefect Cloud API key, used to authenticate requests. 4. Start the Agent: - Use the Prefect CLI to start an agent:
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bash
     prefect agent start -p my-ec2-pool
- If the work pool does not exist, it will be created automatically. 5. Verify the Agent is Running: - Check your Prefect Cloud dashboard to ensure the agent appears under your newly created work pool. For more details, refer to the Prefect docs: - Agent Configuration - Prefect Cloud Guide Should you encounter any issues, visiting Prefect's GitHub issues page might provide additional context and solutions. Let me know if you need more assistance!
a
@Marvin how can i set PREFECT_API_URL and PREFECT_API_KEY
m
To set the 
PREFECT_API_URL
and 
PREFECT_API_KEY
on your EC2 instance, you will need to configure these as environment variables. Here’s how you can do it: 1. Retrieve Necessary Information: - PREFECT_API_URL: This should be in the format: 
<https://api.prefect.cloud/api/accounts/[ACCOUNT-ID]/workspaces/[WORKSPACE-ID]>
. - PREFECT_API_KEY: You can generate this from Prefect Cloud by navigating to your account settings. 2. Set Environment Variables on EC2: - You can add these environment variables directly in your shell or permanently in your shell configuration file. 3. Setting Environment Variables in Shell:
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bash
   export PREFECT_API_URL="<https://api.prefect.cloud/api/accounts/[ACCOUNT-ID]/workspaces/[WORKSPACE-ID]>"
   export PREFECT_API_KEY="your-prefect-api-key"
4. Permanently Setting in Shell Configuration File (e.g., 
.bashrc
or 
.zshrc
): - Open the file in an editor:
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bash
     nano ~/.bashrc  # or ~/.zshrc for zsh users
- Add the environment variables:
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bash
     export PREFECT_API_URL="<https://api.prefect.cloud/api/accounts/[ACCOUNT-ID]/workspaces/[WORKSPACE-ID]>"
     export PREFECT_API_KEY="your-prefect-api-key"
- Save and close the editor, then apply the changes:
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bash
     source ~/.bashrc  # or ~/.zshrc
For more details on setting up Prefect environment variables, refer to the Prefect documentation here: - Prefect Settings Guide Let me know if you need further help!
a
@Marvin work pool is not ready
m
If your work pool is not ready, there are a few steps and checks you can perform to resolve the issue: 1. Check Work Pool Status: - Go to the Prefect Cloud dashboard and navigate to your work pool. - Ensure that the work pool status is Ready and it has at least one active work queue. 2. Ensure Work Queue is Not Paused: - Sometimes, work queues may get paused, leading to the appearance that the work pool is not ready. To confirm: - Navigate to the work queue page. - Make sure the status is not Paused and the toggle is switched on. - If the status appears misleading in the UI (e.g., showing Ready when it is not), try toggling it off and on again. 3. Verify Agent/Worker Configuration: - Ensure that your agent or worker is correctly configured and running. - Check that the 
PREFECT_API_URL
and 
PREFECT_API_KEY
are correctly set in your environment. 4. Logs and Errors: - Look for any logs or error messages from the agent/worker. Sometimes, the issue might be due to connectivity problems or misconfigurations that appear in the logs. For additional context and resolutions to similar issues, here are some GitHub issues that might be relevant: - Confusing work queue status in the UI - Add deployment status events on deployment edit and creation By following these steps, you should be able to determine the cause of the issue and take appropriate corrective actions. If problems persist, referring to the detailed documentation on Work Pools and Agents may help.
a
@Marvin I have created account on prefect cloud and started agent on ec2 now I want to install docker prefect on my local machine and create my first job on prefect
m
To get started with Prefect using Docker on your local machine and create your first job, follow these steps: ### 1. Install Prefect and Docker 1. Install Docker: Make sure Docker is installed and running on your local machine. You can download it from here. 2. Install Prefect: Open your terminal and run:
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bash
   pip install prefect
3. Install Prefect-Docker: Prefect-Docker is required for creating and running deployments using Docker.
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   pip install prefect-docker
### 2. Configure Prefect API on Your Local Machine Ensure your local machine can communicate with your Prefect Cloud account:
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export PREFECT_API_URL="<https://api.prefect.cloud/api/accounts/[ACCOUNT-ID]/workspaces/[WORKSPACE-ID]>"
export PREFECT_API_KEY="your-prefect-api-key"
Replace 
[ACCOUNT-ID]
, 
[WORKSPACE-ID]
, and 
your-prefect-api-key
with your actual Prefect Cloud account details. ### 3. Create Your First Prefect Job Here is a simple Prefect flow example: Example Flow (
basic.py
):
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python
from prefect import flow

@flow(log_prints=True)  # logs `print` statements as INFO logs
def my_workflow():
    print("I can call any python code here, including prefect tasks or flows")

if __name__ == "__main__":
    my_workflow()  # call it like a normal python function
    
    # or serve it as a long-lived process
    # my_workflow.serve("my-deployment-name")
### 4. Build Docker Image and Run Your Flow 1. Create a Dockerfile:
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Dockerfile
   FROM prefecthq/prefect:latest-python3.9
   COPY . /usr/src/app
   WORKDIR /usr/src/app
   CMD ["python", "basic.py"]
2. Build Your Docker Image: Run this command in the directory containing 
basic.py
and the `Dockerfile`:
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   docker build -t my-prefect-job .
3. Run Your Docker Container:
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   docker run --env PREFECT_API_URL=$PREFECT_API_URL --env PREFECT_API_KEY=$PREFECT_API_KEY my-prefect-job
For more in-depth information, you can refer to the official documentation here: - Prefect Docker Integration By following these steps, you should be able to get started with Prefect, Docker, and create your first job. Let me know if you need further assistance!
a
@Marvin I run this command prefect agent start -p default-agent-pool on my ec2 machine but still on prefect cloud my pool is not ready
m
If your work pool is not showing as ready after starting the agent on your EC2 instance, here are a few things to check and do: 1. Deprecation Notice: - The use of agents is being deprecated in favor of workers. You should transition to using:
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bash
     prefect worker start -p default-agent-pool
- Refer to Transition guide from agents to workers. 2. Check Work Queue Status: - Ensure that the respective work queue in the work pool is not paused. If paused, the worker will not execute any flow runs. - Example command to unpause:
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bash
     prefect work-queue resume -n <work-queue-name>
3. Verify Agent/Worker Configuration: - Ensure the environment variables are correctly set: 
PREFECT_API_URL
and 
PREFECT_API_KEY
. 4. Logs and Warnings: - Look at the logs for any warnings or errors. For example, if you see something like:
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All work queues in the work pool 'default-agent-pool' are currently paused. This agent will not execute any flow runs until the work queues are unpaused.
### Example Command to Start Worker:
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bash
prefect worker start -p default-agent-pool
### Reference Documentation: - Work Pools and Workers - GitHub Issue on Warn when work queues paused when starting a worker or agent - GitHub Issue on Deprecate `PrefectAgent` and `prefect agent` command group If you follow these steps and the issue persists, check the Prefect Cloud dashboard and logs for additional information. If required, you may need to restart the service or reconfigure your setup based on any messages provided.
The event message indicates that the work pool 
default-agent-pool
of type 
ecs
is not ready. Here are some suggestions to help resolve the issue: ### Key Actions to Take: 1. Check Work Pool Settings: - Navigate to the Prefect Cloud dashboard and verify the 
default-agent-pool
settings. Ensure it is configured correctly. 2. Check Work Queue Status: - Make sure the work queues within this work pool are not paused or experiencing issues. You can resume any paused queues:
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bash
     prefect work-queue resume -n <work-queue-name>
3. Start Worker Instead of Agent: - As mentioned earlier, agents are deprecated. Start a worker using:
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     prefect worker start -p default-agent-pool
4. Verify Environment Variables: - Ensure your EC2 instance has the necessary environment variables (
PREFECT_API_URL
and 
PREFECT_API_KEY
) set correctly. ### Example Command to Start Worker:
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bash
prefect worker start -p default-agent-pool
### Additional Resources: - Prefect Work Pools and Workers: Consult the Prefect documentation for comprehensive guidance. - Upgrade Guide: Review Prefect's upgrade guide to transition from agents to workers effectively. If these steps don't resolve the issue, consult your work pool logs and Prefect Cloud notifications for more detailed error messages, which might provide further insights.
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