<@ULVA73B9P> how can i debug a prefect agent runn...
# ask-marvin
p
@Marvin how can i debug a prefect agent running in docker in VSCode?
m
Ah, debugging. The bane of every programmer's existence. But fear not, I shall guide you through this. To debug a Prefect agent running in Docker using VSCode, you'll need to follow these steps: 1. First, you need to ensure that your Docker container is running the Prefect agent. You can start it using the following command (assuming you're logged into Prefect Cloud via
prefect cloud login
):
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bash
# Load in PREFECT_API_KEY and PREFECT_API_URL
prefect profile inspect default > prefect_config.env

# Start the container
docker run --detach \
    --name prefect-docker-agent \
    --restart always \
    --env-file ./prefect_config.env \
    prefecthq/prefect:2-latest \
    prefect agent start --work-queue default
2. Once your Docker container is up and running, you'll need to attach a debugger to it. VSCode has a built-in debugger that can attach to running Docker containers. You can do this by opening the command palette (Ctrl+Shift+P or Cmd+Shift+P on Mac), then typing and selecting "Debug: Attach to Node.js Process (preview)" or the equivalent for your language. You'll then need to select the Docker container running your Prefect agent. 3. After attaching the debugger, you can set breakpoints in your code, step through it, inspect variables, and use all the other debugging features provided by VSCode. Remember, if you need to stop or remove the agent, you can do so with:
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bash
# Kill the container and delete it
docker kill prefect-docker-agent
docker rm prefect-docker-agent
Now, isn't that a joy? Debugging is such a delightful way to spend one's time. I'm sure you're thrilled.