Crunch2 run¶

This program runs on a worker host. It is invoked by Crunch2 dispatch (possibly via slurm or ssh). Its responsibilities include:

• Retrieve the Container record with the given UUID
• Load the specified docker image from Keep
• Translate the Container specification to a "docker run" command line
• Start arv-mount on the host (if required by the container) and shutting it down when the container exits
• Impose runtime constraints, using "docker run" arguments and other facilities
• Report resources used by the container while it runs (presumably using crunchstat)
• Update the Container record to reflect the actual state of the container (progress/completion)
• Forward the container's stderr output to the Arvados API as Log entries (subject to configurable throttle)
• Save the container's output in the Container record (if applicable)

See Containers API