beermann/rucio-daemon repository overview

⁠Rucio Daemons

Data Management for science in the Big Data era.

Rucio is a project that provides services and associated libraries for allowing scientific collaborations to manage large volumes of data spread across facilities at multiple institutions and organizations. Rucio has been developed by the ATLAS⁠. experiment. It offers advanced features, is highly scalable and modular. Rucio is a data management solution that could cover the needs of different communities in the scientific domain (e.g., HEP, astronomy, biology).

⁠Documentation

General information and latest documentation about Rucio can be found at readthedocs⁠.

⁠Developers

For information on how to contribute to Rucio, please refer and follow our CONTRIBUTING⁠ guidelines.

⁠Getting Started

This image provides the Rucio daemons. Each daemon has to be run in a separate container. It supports MySQL, PostgreSQL, Oracle and SQLite as database backends.

A simple judge-cleaner daemon without a additional parameters can be started just by running this:

docker run --name=rucio-judge-cleaner -v /tmp/rucio.cfg:/opt/rucio/etc/rucio.cfg -e RUCIO_DAEMON=judge-cleaner rucio/rucio-daemons

The rucio.cfg is used to configure the database backend and the daemons.

The RUCIO_DAEMON environment variable gives the name of the rucio daemon.

By default the daemon logs are written to stdout and stderr if you want to write to a file you can use RUCIO_ENABLE_LOGS like this:

docker run --name=rucio-judge-cleaner -v /tmp/rucio.cfg:/opt/rucio/etc/rucio.cfg -v /tmp/logs:/var/log/rucio -e RUCIO_DAEMON=judge-cleaner -e RUCIO_ENABLE_LOGS=True rucio/rucio-daemons

⁠Environment Variables

As shown in the examples above the rucio-daemon image can be configured using environment variables that are passed with docker run. Below is a list of all available variables and their behaviour:

⁠RUCIO_DAEMON

This variable is mandatory and it specifies the name of the daemon, e.g., hermes, kronos, judge-evaluator, etc.

⁠RUCIO_DAEMON_ARGS

Any additional command line parameter can be specified here, e.g., --run-once. This field is optional.

⁠RUCIO_ENABLE_LOGFILE

By default the log output of the daemon is written to stdout and stderr. If you set this variable to True the output will be written to access_log and error_log under /var/log/rucio.

⁠Getting Support

If you are looking for support, please contact our mailing list [email protected]⁠ or join us on our slack support⁠ channel.