Hi there. I am having trouble with the docker agent. Here is the error I am getting when the agent tries to run the flow:

[2020-10-01 19:07:39,119] ERROR - agent | Error while deploying flow: APIError(HTTPError('400 Client Error: Bad Request for url: <http+docker://localhost/v1.40/containers/create'>))

I think it's related to the

tls_config

argument which defaults to

False

. Is it possible to set this in the command line?

Hi @Pedro Machado - I don't think there's a flag for that on the command line but you can modify that on your docker storage object when you define it for your flow

I had that issue when registering the flow and it got solved when I set that option but now the agent is having the same problem.

Hm ok, generally the docker daemon authentication should happen external to Prefect; in this case you can probably specify your TLS cert from the Docker CLI. I'm not sure the exact command but it'll be something like

docker --tlsverify

and then some flags for telling it where the certs are located

The thing is I haven't done anything special to my local docker. I am running on WSL 2. The error I see in the prefect UI is different from what I see on the terminal:

400 Client Error: Bad Request ("invalid IP address in add-host: """)

Hm, can you confirm which version of docker you're on with

docker --version

?

Docker version 19.03.13, build 4484

Ah I think this could actually be a docker bug, see this issue here: https://github.com/docker/cli/issues/2664

The error is the one reported on this issue https://github.com/PrefectHQ/prefect/issues/2781

Got it, then can I ask you to add a comment to that issue with your setup and what you're seeing? I think this might be bigger than a slack thread can get to the bottom of .

I added

--no-docker-interface

and the flow ran.

Interesting, thanks for updating that, very odd that that flag solved your problem but i'm happy you're unblocked!