Re: [HTCondor-users] Using the Python bindings with a Docker Condor

[Jason Patton <jpatton@xxxxxxxxxxx>]

Hi Gaetan,

I haven't tried it myself (yet) but I think it should be possible to use the Python bindings installed standalone (e.g. via pip or conda) from outside the Docker container to interact with HTCondor inside a Docker container supposing that:

1. the HTCondor daemons in the container are listening on the correct interface(s),Â

2. the HTCondor security configuration allows it, and

3. Docker is told to publish the HTCondor daemons port(s) (usually just 9618/tcp if using the shared port daemon, which is default).

(1) and (2) require changes to the 00-minicondor config file, which currently restricts the daemons to only listening to root@localhost.

There may be some other changes needed that I'mÂnot aware of without trying it, but definitely reply back to the list if you're having trouble with getting the config right.

Jason

On Thu, Jan 26, 2023 at 6:38 AM Gaetan Geffroy <gage@xxxxxxxxx> wrote:

Hi Jason,

Â

Thanks for the answer.

So you are confirming to me that it is possible to run a Python program on a machine that is not part of a Condor pool (and does not have Condor installed) and still have it interact with an instance of HTCondor running in a container ?

Â

Thanks,

GaÃtan

Â

Gaetan Geffroy
Junior Software Engineer
Terma GmbH
TÂ+49 6151 86005 43Â(direct)
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From: HTCondor-users <htcondor-users-bounces@xxxxxxxxxxx> On Behalf Of Jason Patton via HTCondor-users
Sent: Wednesday, January 25, 2023 18:27
To: HTCondor-Users Mail List <htcondor-users@xxxxxxxxxxx>
Cc: Jason Patton <jpatton@xxxxxxxxxxx>
Subject: Re: [HTCondor-users] Using the Python bindings with a Docker Condor

Â

CAUTION: This email originated from outside of Terma. Do not click links or open attachments unless you recognize the sender and know the content is safe.

Hi Gaetan,

Â

The htcondor/mini image contains network and security configuration that constrain the daemons to only listening to commands from the root user on the local interface inside the container:

Â

https://github.com/htcondor/htcondor/blob/fc39b1386de0f7290ab82f90e7957c310538f593/build/docker/services/mini/00-minicondor-ubuntu

Â

If you find this too restrictive, you couldÂbuild your own image for testing based on the htcondor/mini or other containers with the configuration you want for your testing. You might want to look at the htcondor/base image and the other htcondor images based on it:

Â

https://github.com/htcondor/htcondor/tree/main/build/docker/services

Â

Jason Patton

Â

On Wed, Jan 25, 2023 at 11:07 AM Gaetan Geffroy <gage@xxxxxxxxx> wrote:

Hi,

Â

I am working on a software which automates some Condor commands through Python. In order to run unit tests, I would like to have an easy way to deploy a little Condor to test basic functionalities.

I wanted to use the htcondor/mini Docker image, but the Python classes and functions only interact with the Condor daemons, so I guess that it is not possible to have a Python program interact with it unless it runs inside the container.

Am I correct ? I just want to confirm this before I abandon this idea and go for something else.

Â

Thanks,

Â

GaÃtan

Â

Gaetan Geffroy
Junior Software Engineer,ÂSpace

Terma GmbH
Europaarkaden II, BratustraÃe 7, 64293 Darmstadt, Germany
TÂ+49 6151 86005 43Â(direct)ÂÂâÂÂTÂ+49 6151 86005-0
Terma GmbHÂ-ÂSitz DarmstadtÂÂâÂÂHandelsregisterÂNr.:ÂHRBÂ7411,ÂDarmstadt
GeschÃftsfÃhrer:ÂPoul VighÂ/ÂSteen Vejby SÃrensen
www.terma.comÂâÂLinkedin â Twitter â Instagram â Youtube

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