[HTCondor-users] Recent Docker package update will break HTCondor Docker Universe support

[Greg Thain <gthain@xxxxxxxxxxx>]

The most recent Docker Community Edition (docker-ce) update, version 
20.10.4, introduces serious bugs that will break Docker Universe in 
HTCondor on many platforms, including Ubuntu and CentOS. Docker CE 
version 20.10.3 does not have these bugs.

The HTCondor team strongly recommends that administrators version lock 
Docker to 20.10.3 on their systems until these bugs are resolved.

The symptom of the problem is that Docker Universe jobs will start from 
the HTCondor perspective, but not from the Docker perspective, and will 
not make progress, and hang in the 'R' state indefinitely. 
condor_ssh_to_job will report that the container is not started. There 
is no workaround in HTCondor for these problems.

The HTCondor team will continue to monitor the issue and will email 
updates as they are available.


Thank you,

-greg