Our offering in terms of software tools relies on 2 separate components :
nepi-ngfocuses on experiment orchestration that runs on your laptop ; it allows you to describe the sequencing and dependencies of the various steps of your experiment, including if desired for loading images on the nodes when you start from scratch ;
rhubarbeis a low-level tool that is available on the R2lab gateway, that helps inspect and change the node status (think: on or off) and to load and restore images on the nodes.
You can find a hands-on tutorial and introduction to both tools in the tutorials section.
nepi-ng : Network Experiment Programming Interface new generation
nepi-ng is a Python-based library to model and run network
experiments on a variety of network evaluation testbeds. It allows to
specify resources to use in an experiment, to define experiment
workflow constraints and to automate deployment, resource control and
It only assumes
ssh connectivity to the nodes to be controlled, so
it is not specific to R2lab, and can be used in a variety of contexts;
in particular it ensures optimal usage of ssh connections.
It is available through a CreateCommon license CC BY-NC-ND.
nepi-ng is in fact the addition of 2 python libraries named
apssh. You can find more details on their API and
internals at the
rhubarbe : a tool for low-level management of nodes
Less sophisticated, but still quite useful on a daily basis,
rhubarbe is a R2lab-specific tool for doing quick nodes management
from the command line on the gateway. It can also be invoked through
nepi-ng as part of your automated experiment, typically in order to
check that you have a valid lease at this time, load images, wait for
the nodes to show up, or switch off the testbed when you leave (but
don't worry if you forget, it's taken care of).
More details on
rhubarbe can be found on its github