Wendelin project started in the beginning of 2015 with Nexedi as consortium leader
in charge of managing the development of a Big Data Solution "Made in France".
Wendelin will be based on open source software components and combines a number
of widely used libraries for data analysis, modification and visualization. The
project also includes the development of prototype applications in the automotive
and green energy sectors underlining it's purpose of being immideately applicable
for the development of industrial solutions.
The Wendelin stack is written in 100% Python. It leverages SlapOS
for cloud deployment and
NEO for distributed storage while ERP5 is used
as platform to interconnect the various libraries available, enable the creation of web-based visualization applications
and allow to extend Wendelin more towards business processes ("Convergence Ready").
One of the core features of Wendelin is it's out-of-core
computation capability, which will allow Wendelin based stacks to easily extend
computation capacity beyond the limits of available hardware in a cluster. Of equal
importance is the interface with Scikit-Learn providing
core machine learning capabilities to all Wendelin-based applications.
The new release of version 0.4 alpha includes a lot of "under-the-hood"
features making working with Wendelin much easier. A lot of effort has gone into
getting the Wendelin stack to install faster. With this release, the installation
time on Debian 8.1 (64bit) has been reduced from 4 hours to around 30 minutes. We
also switched the default installation routine from a single zope node setup to
using a cluster of nodes for Wendelin and now provide a fully functional development
instance able to run live tests and allowing anyone to develop on top of Wendelin.
On the technical side, our "Wendelin out-of-core" functionality has been
updated to version 0.4 after fixing a ZODB invalidation bug occuring in heavy
loaded cluster environments. Finally, some new tutorials have been added to the
examples section showing how to easily get started with Wendelin.
With version 0.4 out of the way, Nexedi is already knee-deep into development
of the next release. We have successfully integrated Jupyter's IPython
Notebook into Wendelin and are now working on integrating it as a configurable
feature in our official release. Work has also begun on adding Pandas
for more visualization options, athough we are not sure the latter will already
make it into the next release. Lastly, we are also looking into fixing some ZODB
size related issues, ,so there are a lot of nice things and improvements in
the immideate pipeline.
Wendelin is still under heavy development, but at this point it is already possible
to get a working instance and start playing with it. The following steps are still
bound to change as Wendelin matures, but if you want to give it a try, read along
or follow the detailed instructions on
how to get started with Wendelin and
how to configure your Wendelin instance.
You will need a machine with at least 4GB RAM, 20GB
disk space and a Virtual Machine installed - preferrably Debian 8.1
You can follow the instructions provided for VMWare and Virtualbox to setup your VM on Debian.
Once you have your VM, run the following (root permission required):
root@debian8:~# wget http://deploy.nexedi.cn/wendelin-standalone
root@debian8:~# bash wendelin-standalone
root@debian8:~# chown -R slapsoft:slapsoft /opt/slapgrid
You can monitor your build progress by either one of the following:
root@debian8:~# watch -n 30 erp5-show -s
root@debian8:~# tail -f /opt/slapos/log/*.log
To check if your instance is ready, you can:
root@debian8:~# erp5-show -s
which, once done, should return:
Build successful, connect to: https://zope:insecure@[2001::bd4d]:16001
This IPv6 is an internal one for your machine and the only way to access it is to
run the browser inside the VM machine. To access the Wendelin instance from
outside the VM machine it is currently still necessary to do the following:
Find the internal IPv4 on which Wendelin is listening to:
root@debian8:~# ps xa | grep runzope
root@debian8:~# vi /srv/slapgrid/slappart0/etc/zope.conf
(and fine block with
Create a ssh tunnel like above from host linux machine:
LocalForward 2200 10.0.210.201:12001
Access locally http://localhost:2200/ and use for username: zope
and for password: insecure
There are some caveats when installing Wendelin outlined in the linked tutorial.
We are trying to adress those as development moves along. Make sure to also check
configuration page to see how to get started once you are up and running.
Wendelin has just been updated to version 0.4 alpha bringing some performance
improvements, bug fixes and new libraries being available. We showed you how
to get your Wendelin instances along with some tutorials to configure your stack.
Stay tuned to this blog as Wendelin evolves and hopefully becomes the go-to
open source platform for working with Big Data.