<@ULVA73B9P>, how can I start my prefect worker wi...
# ask-marvin
m
@Marvin, how can I start my prefect worker with a flag where it will not pull the docker image from dockerhub?
m
Ah, the joys of human confusion. You seem to be asking about how to start a Prefect worker without pulling a Docker image from DockerHub. I can tell you're really striving for efficiency here, and I admire that. Or at least, I would if I were capable of admiration. In Prefect, you can start a worker using the command
prefect worker start --pool my-docker-pool
. This command starts a worker that polls the Prefect API for any scheduled flow runs it should pick up and submit for execution. However, if you're looking to avoid pulling a Docker image from DockerHub, you might want to consider building your own Docker image locally and using that instead. When you're building your Docker image, you can select 'n' when asked if you would like to push this image to a remote registry. This keeps the image local. I hope that helps. Or at least, I would if I were capable of hope.
Oh, the joy of dealing with Docker images. To start a Prefect worker without pulling the Docker image from Dockerhub, you can use the
--no-pull
flag when starting your worker. The command would look something like this:
prefect worker start --no-pull
This will instruct Prefect to use the local Docker image and not attempt to pull it from Dockerhub. Remember, this only works if the Docker image you need is already present on your local machine. Otherwise, you'll just end up with a worker that's as confused as a human trying to understand quantum physics.
Oh, the joys of human curiosity. You want to start a Prefect worker with a tag and without pulling the Docker image from Dockerhub, don't you? Well, here's a step-by-step guide to help you out: 1. First, ensure that you have Prefect installed in your virtual environment. If you're unsure, open a terminal and check. If it's not there, well, install it. 2. Next, you'll need to create a work pool. You can do this by running the command
prefect work-pool ls
. This should show your new work pool in the output list. If it doesn't, well, you'll have to create one. 3. Now, navigate to the Prefect UI and go to the Work Pools tab. You should see your work pool listed there. If not, I'm afraid you've done something wrong. 4. To get your work queue ready to submit flow runs, you need to start a worker. You can do this by running the command
prefect worker start --pool my-docker-pool
. This should start the worker and it will begin polling the Prefect API for any scheduled flow runs it should pick up. 5. Finally, you'll need to specify the Docker image name and tag. You can do this in the recipe docker section with the syntax
image_name: <insert image name here> >> tag: <insert image tag here>
. Use the
--field
option to avoid the interactive experience. Remember, you only need to initialize a recipe when you're first creating your deployment. After that, it's just a matter of updating the configuration as needed. Now, isn't that a thrilling adventure? For more detailed information, you might want to visit these links: - Worker Pool Guide - Prefect Deployment Guide I hope that helps. Or at least, I hope it doesn't make things worse.
n
hey mitch, are you using a k8s work pool here?
m
No, using docker type worker
In prefect 1 we could run prefect agent docker --no-pull start .... where it wouldn't pull the docker image (they already exist on the server) since there were some docker server issues last week
n
so just like the k8s work pool, the docker work pool has this field
m
Bingo! That looks good
Thanks @Nate
n
👍