VOMon - the VO service monitor has been released:
http://vomon.sourceforge.net
VOMon is a mashup of the Astro Runtime
<http://www2.astrogrid.org/desktop/astro-runtime> and MARS
<http://leapfrog-mars.sourceforge.net/>, glued together with Python.
VOMon uses the Astro Runtime to query a Registry to obtain all the
services that match an admin-specified query. By default it queries the
central AstroGrid registry, but can be configured to query any
IVOA-compliant registry. This list of services is updated every hour or
so, so that VOMon will always have a reasonably up to date list of
services to monitor. The services are passed to MARS which does the
actual monitoring. Currently this monitoring consists of simply
pinging the accessURL and checking the response. Some services such as
Cone and SIAP, have default parameters appended to the accessURL to
ensure they do not fail. Once the VOSI interface is widely supported,
VOMon will be upgraded to use that. VOMon can either output a report to
be hosted on a web server, or present the user with a GUI interface.
An instance has been deployed at:
http://thor.roe.ac.uk/vomon/status.xml
