1. EDT-WP4 monitoring group status report
Gennaro Tortone (INFN Napoli)
DataTAG WP4 meeting Bologna – January 14, 2003

2. EDT monitoring group Partecipants Sergio Andreozzi (INFN CNAF)
Vincenzo Ciaschini (INFN CNAF)
Sergio Fantinel (INFN Legnaro)
Antonia Ghiselli (INFN CNAF)
Gennaro Tortone (INFN Napoli)
Cristina Vistoli (INFN CNAF)
Goal
development of a Grid monitoring tool in order to monitor the overall functioning of the Grid. The software should enable the grid administrators to quickly identify problems and take appropriate action

3. Tasks identify the requirements for Grid monitoring
done – Grid monitoring analysis draft [with some LCG inputs] (available on
evaluation of existing monitoring tools (sensors) to use as “first monitoring layer” on each grid-element
done – tools evaluated:
Ganglia gmond
very easy to use
multicast based (to gather metrics in a farm)
it has not an historical archive
some RPM dependencies …

4. Tasks …
EDG-WP4 fabric-monitoring tool (fmon)
client-server model
very easy to use
very easy to install (one RPM – without dependencies)
highly customizable (time interval for each metric, …)
it is very easy to add a new metric
historical archive
database in plain-text format
extension of the WP4 fabric-monitoring tool (fmon) to include other monitoring metrics
done – (all metrics added are available on

5. Tasks GLUE schema extension to include all monitoring metrics
done – “host level” added to GLUE schema
development of information-providers “to fill” the GLUE host level extension – in progress
definition of database structure to store snapshot/historical monitoring data – in progress

6. information providers
web interface
ldap query
GIIS (GLUE schema)
discovery service
information index
monitoring service
ldap query
monitoring server
WP4 fmonserver
GRIS (GLUE schema)
write
run
ldif output
information providers
farm monitoring archive
WP4 monitoring agent
worker node
/proc filesystem
WP4 sensor
run
read
metric output
WP4 monitoring agent
worker node
/proc filesystem
WP4 sensor
run
read
metric output
read
computing element
GRID monitoring architecture for LCG/EDT testbeds
author: G. Tortone
date: 18/12/2002

8. Future activities “personal” Grid-monitoring [integration with VOMS]
job monitoring
automatic resource discovery using MDS infrastructure and GLUE schema
evaluation of OGSA as monitoring service
development of a "Nagios based" Grid monitoring tool
scalability
very low intrusivity
automatic resource discovery
fault detection and notification
metrics graphs
web interface