Re: [HTCondor-users] Submit job from host to htcondor/mini container using python bindings

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

On 9/12/2025 1:51 PM, Gavin Price wrote:

Hi all,

I started using HTCondor literally Tuesday so I'm an ultranoob. I'm trying to do something that I naively think should be pretty simple, e.g. run the htcondor/mini container and submit a job from the host using the python client. 

    Hi Gavin,
    
    The htcondor/mini container is an all-in-one container that running
    a full HTCondor System, including both the  HTCondor Access Point
    service (which holds and manages submitted jobs and runs the schedd)
    and the Execution Point service (which runs jobs).  All
    configuration defaults should be reasonable, and no config
    customization should be required.
    
    Running this container is a great way to "kick the tires", learn how
    to submit jobs and workflows, and play with the HTCondor Python API
    bindings.  
    
    I think where you took a wrong turn was changing around the default
    configuration by volume mounting config files (i.e.
    "99-NO_AUTH.config").  I suggest you try again just without
    customizing the configuration, the defaults should be fine.    Note
    that you cannot submit or run jobs as user "root"; the htcondor/mini
    container has user "submituser" created for this purpose.  Here is
    what I did to run your submit a sleep job test:
    
      C:\> docker run -d htcondor/mini
      C:\> docker exec -it -u submituser quirky_shtern bash
      [submituser@b7c643c8d107 /]$ python3
      Python 3.9.21 (main, Jun 27 2025, 00:00:00)
      [GCC 11.5.0 20240719 (Red Hat 11.5.0-5)] on linux
      Type "help", "copyright", "credits" or "license" for more
      information.
      >>> import htcondor
      >>> schedd = htcondor.Schedd()
      >>> sub = htcondor.Submit({
      ... "executable": "/bin/sleep",
      ... "arguments": "30",
      ... "output" : "/tmp/sleep.out",
      ... "error" : "/tmp/sleep.err",
      ... "log" : "/tmp/sleep.log",
      ... })
      >>> cluster_id = schedd.submit(sub)
    
    OR... are you trying to use the htcondor/mini container to submit
    jobs to an pre-existing Access Point (schedd) running someplace
    else, e.g. on a remote server?  That is NOT what the htcondor/mini
    container is about or is configured to do; you probably want the
    htcondor/submit container.  Also, if you wish to simply get an
    HTCondor Pool going across multiple servers or contains, you could
    use the "get_htcondor" tool as described in the Admin 
    Quick Start Guide at
https://htcondor.readthedocs.io/en/latest/getting-htcondor/admin-quick-start.html
    
    Hope the above helps,
    Todd