Re: [HTCondor-users] Signature Verification Errors

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

On 10/14/2025 2:19 PM, Bryant Finney via HTCondor-users wrote:

Hello, my team is receiving the following error message when attempting to install Condor:

W: GPG error: https://htcss-downloads.chtc.wisc.edu/repo/ubuntu/24.0 noble InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9DF75B52EFFC3BE6

E: The repository 'http://research.cs.wisc.edu/htcondor/repo/ubuntu/24.0 noble InRelease' is not signed.

Can we request assistance?

Thanks!

Bryant

    Hi Bryant,
    
    I am no packaging expert, but luckily the "get htcondor" tool that
    installs HTCondor is better at packaging than I am.  :)
    
    For ease of installation on Linux, we provide a script that will
    automatically download, install, and start HTCondor.  
    See
https://htcondor.readthedocs.io/en/25.0/getting-htcondor/install-linux-as-root.html
    
    At any rate, the "get htcondor" tool does the following on Ubuntu to
    add the HTCondor 24.0 repositories and  allow signatures to be
    verified:
    
    # Adding our repository
      DEBIAN_FRONTEND=noninteractive apt-get update
      DEBIAN_FRONTEND=noninteractive apt-get install -y curl gnupg
      mkdir -p /etc/apt/keyrings
      curl -fsSL
      https://htcss-downloads.chtc.wisc.edu/repo/keys/HTCondor-24.0-Key
      -o /etc/apt/keyrings/htcondor.asc
      DEBIAN_FRONTEND=noninteractive apt-get install apt-transport-https
      curl -fsSL
https://htcss-downloads.chtc.wisc.edu/repo/ubuntu/htcondor-24.0-noble.list
      -o /etc/apt/sources.list.d/htcondor.list
      
      
    After doing the above, you should be able to do an "apt-get
    update" followed by apt-get install.
    
    Alternatively, I think you could just use "apt-key add" to add our
    Ubuntu signing key which you can download from:
       https://htcss-downloads.chtc.wisc.edu/repo/keys/HTCondor-24.0-Key
    
    Finally, please consider installing HTCondor 25.0 instead of
    HTCondor 24.0.  In with the new, out with the old!  :)
    
    Hope the above helps,
    regards,
    Todd