Talk to SurveyCTO http://www.surveycto.com/index.html
ODK Aggregate was designed to enable multi-tentant hosting of multiple
independent ODK Aggregate WAR files on a single Tomcat server. Each would
enforce its own data security by being configured to write into a different
database and/or table schema. You just need to run the installer script,
specify different database parameters, and rename the .WAR file to another
name (e.g., 'instance2') and deploy that to your server. You can then
access it via http://your.server.com/instance2 -- if that name is ROOT,
on Tomcat, that is a special name and maps to http://your.server.com
The issues are that the ODK Aggregate configuration has never been tuned
to be efficient. Each instance has its own database thread pool, its own
background worker thread pool, etc. and if you are processing large video
clips or exporting data to files, each instance can take gobs of main
memory because we did not implement streaming data processing (in part
because GAE has request limits and transient storage restrictions making
this very difficult to do on that platform).
We also designed the installer to impose choices to eliminate all
dependencies across WARs and to make no assumptions about the webserver
configuration. If you start making assumptions, about either, you can make
the system more memory efficient.
The SurveyCTO team has done an impressive job of working through all of
these issues.
If you are comfortable with their security measures, you may want to
simply have them host your data collection efforts.
It will be far easier and far less painful than wading into this yourself.
That said, if you have code changes that improve functionality, please
contribute them back under Apache 2 license, and if you have configuration
tips, please consider documenting them in our Wiki (we will happily give
you access).
Mitch
On Wed, Jan 29, 2014 at 3:49 PM, Neil Penman neilpenman@gmail.com wrote:
Cool Jared. Good to see there is interest in this. The Smap Server,
which is compatible with odkCollect and is fully open source, is
multi-tenant capable however there is no user interface to create new
organisations. In the next release (end of Feb) I will be adding this user
interface.
Smap already supports multiple projects that isolate surveys from each
other. So somebody with an Analyst role can only see surveys in the
projects that they have been given access to. With the new organisation
capability a user with an "Admin" role will only be able to create projects
and gain access to projects within their organisation.
More details on this release and previous releases are available at
http://blog.smap.com.au
regards
Neil
On Thu, Jan 30, 2014 at 10:42 AM, Jared B. Reimer jared@cascadeo.comwrote:
Greetings -
We are working with an organization that makes heavy use of ODK.
Currently, a single-tenant server instance is deployed for each of their
various divisions / projects. (This is done for security reasons, in the
sense that there can be no visibility between projects etc.) This
single-tenant model doesn't scale particularly well as the organization's
use of ODK grows.
I am wondering if anyone has interest in, or knowledge of, a
multi-tenant ODK server (preferably open source) that provides strong
partitioning / security between users of the system and scales
horizontally. This might be something already in existence but most likely
would be a development effort. At this point, I have no idea how much (or
little) work it would be to adapt the existing code to support
multi-tenancy... I am simply trying to gauge whether or not others are
interested and/or working on this problem.
Thanks,
-- Jared
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Application Developer - neilpenman@gmail.com minqiang.huang@gmail.com
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University of Washington
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