The UI on flow runs has stopped displaying the flow run graph and only shows "This flow run did not generate any task or subflow runs" even though a task has been executed. Any ideas on how to troubleshoot and identify the root cause to get this view back? We are using Prefect Cloud on Kubernetes infra with Prefect version 3.0. Our subflows do produce a result correctly, so it is just tasks.

Anyone else's flows being stuck in 'Pending' state? They were running fine earlier. Is it some sort of limit I've run into by any chance on the free tier?

Hey everyone! Does anyone know what are the resource requirements when deploying the prefect-server helm chart? I tried to deploy it on two Raspberry Pi 4s with 8GB RAM that are running k3s, and most of the pods are unable to start, which results in 0 deployments working. All the dead pods are giving the

standard_init_linux.go:228: exec user process caused: exec format error

error in logs though, so not 100% sure the issue's hardware-related. Any suggestions would be appreciated 🙏

Hello , I am trying to run a prefect in docker. I looked in this community. But it seems that there is no proper docker compose file for prefect. I was trying to use this for the prefect docker compose. I am very new to docker. So, I tried to write a docker compose to up and prefect. I am also learning prefect very recently. I tried to write the docker compose below following this example. Is there any proper docker compose.yml file that I can use to create nodes for prefect and view the prefect dashboard? The dashboard is not showing. I am looking for docker-compose.yml for prefect v3. Thank you in advance for any assistance. https://github.com/PrefectHQ/prefect-background-task-examples/blob/main/chaos-duck/docker-compose.yaml But I seem to be encountering this issue in the docker compose logs.

prefect  | During handling of the above exception, another exception occurred:
prefect  | 
prefect  | Traceback (most recent call last):
prefect  |   File "/usr/local/bin/prefect", line 8, in <module>
prefect  |     sys.exit(cli())
prefect  |   File "/usr/local/lib/python3.7/site-packages/click/core.py", line 1130, in __call__
prefect  |     return self.main(*args, **kwargs)
prefect  |   File "/usr/local/lib/python3.7/site-packages/click/core.py", line 1055, in main
prefect  |     rv = self.invoke(ctx)
prefect  |   File "/usr/local/lib/python3.7/site-packages/click/core.py", line 1657, in invoke
prefect  |     return _process_result(sub_ctx.command.invoke(sub_ctx))
prefect  |   File "/usr/local/lib/python3.7/site-packages/click/core.py", line 1657, in invoke
prefect  |     return _process_result(sub_ctx.command.invoke(sub_ctx))
prefect  |   File "/usr/local/lib/python3.7/site-packages/click/core.py", line 1404, in invoke
prefect  |     return ctx.invoke(self.callback, **ctx.params)
prefect  |   File "/usr/local/lib/python3.7/site-packages/click/core.py", line 760, in invoke
prefect  |     return __callback(*args, **kwargs)
prefect  |   File "/usr/local/lib/python3.7/site-packages/prefect/cli/server.py", line 674, in start
prefect  |     ["docker-compose", "down"], cwd=compose_dir_path, env=env
prefect  |   File "/usr/local/lib/python3.7/subprocess.py", line 411, in check_output
prefect  |     **kwargs).stdout
prefect  |   File "/usr/local/lib/python3.7/subprocess.py", line 488, in run
prefect  |     with Popen(*popenargs, **kwargs) as process:
prefect  |   File "/usr/local/lib/python3.7/subprocess.py", line 800, in __init__
prefect  |     restore_signals, start_new_session)
prefect  |   File "/usr/local/lib/python3.7/subprocess.py", line 1551, in _execute_child
prefect  |     raise child_exception_type(errno_num, err_msg, err_filename)
prefect  | FileNotFoundError: [Errno 2] No such file or directory: 'docker-compose': 'docker-compose'

My docker-compose.yml

services:

  postgres:
    image: postgres:16
    restart: always
    environment:
      POSTGRES_USER: prefect
      POSTGRES_PASSWORD: password
      POSTGRES_DB: prefect
    volumes:
      - postgres-data:/var/lib/postgresql/data
    networks:
      - prefect-net

  prefect:
    image: prefecthq/prefect:latest
    container_name: prefect
    restart: always
    environment:
      PREFECT_HOME: /data
      PREFECT_API_DATABASE_CONNECTION_URL: <postgresql+asyncpg://prefect:password@postgres/prefect>
    command: prefect server start
    ports:
      - "4200:4200"
    volumes:
      - prefect-data:/data
    depends_on:
      - postgres
    networks:
      - prefect-net

volumes:
  postgres-data:
  prefect-data:

networks:
  prefect-net:

How can I schedule a deployment, and pass different parameters? I mean on this case for example:

@flow(log_prints=True)
def myflow(param: str):
    print(f'flow executed with param={param}')

I want to schedule 10 runs, and each of them with different values for param1. Schedule 1: param=1 Schedule 2: param=2 ...

I feel like this is a Noob question but I can't find an answer. Is there a way to make prefect server restart automatically after reboots? The documentation mentions using supervisord for agents on this, but there don't seem to be any equivalent instructions for server. The closest I found was another thread on here that seems to use

prefect server config

to generate a docker compose file, and I'm partway down the path of trying to set that up to auto-start (still working through https://github.com/flavienbwk/prefect-docker-compose, which was linked in it), but so far it's not working and it seems like there should be a simpler answer here. Docker has restart policies already (https://docs.docker.com/config/containers/start-containers-automatically/), is there not some flag I can pass to

prefect server start

to use them?

Hi there, I noticed that the schedule option has disappeared from the UI Deployment page. After Friday's updates, flows do not run on schedule. Is it a bug, or you move this option to a different place? The schedule will be deprecated in Sep 2024. Also, how can we be aware of the changes you make in advance? Thanks

Hey Good Morning everyone, Have anyone tried to use an NVIDIA-DOCKER as a prefect agent to run some flows. I have got the setup ready and running, but when the task which needs to use the GPU's start executing, I see it doesn't use the GPU, but instead it runs on CPU. I can see the below logs

@Marvin I have a local Dockerfile that I use to deploy a workflow. The work-pool also runs locally, but somehow I get the following error:

docker.errors.ImageNotFound: 404 Client Error for <http+docker://localhost/v1.47/images/create?tag=latest&fromImage=prefect-example>: Not Found ("pull access denied for prefect-example, repository does not exist or may require 'docker login'")

I can see the image locally though. This is my deployment code:

pipeline_flow.deploy(
        name="first-pipeline",
        work_pool_name="local-docker-pool",
        parameters={"folder": folder},
        image=DockerImage(
            name="prefect-example",
            tag="latest",
            dockerfile="Dockerfile"
        ),
        push=False,
    )

What could be the issue?

@Marvin how can i trigger a flow when another flow enters completed - both flows will have the same parameters