1. Status of SA2 network monitoring and troubleshooting tools
Guillaume Cessieux
(CNRS/IN2P3-CC, EGEE SA2)
OTAG, , AMS

2. Why is this a complicated topic ?
More than 40 heterogeneous networks domains
Network monitoring slowly converging toward perfSONAR but not yet mature, usable and deployed enough
EGEE cannot support manpower in each NRENs
And we have no direct customer/provider relationships
Networks are shared
Reduce network monitoring overhead and overlaps
Must be generic, not on a per project basis
Active performance tests are disturbing and facing unknown interferences on shared networks
Passive tests are facing unwillingness to grant access on network devices or to share data

3. SA2 tools
Monitoring and troubleshooting tools converged toward two main tools
DownCollector
perfSONAR-lite TroubleShooting Services (TSS)
Several other attempts
NPM, e2emonit, Grid jobs...
All source code produced by the EGEE-SA2 activity is publicly published (Apache 2 license via EGEE)
Support will be provided until the end of EGEE-III

4. DownCollector (1/2) Completely home made monitoring tool for EGEE-SA2
Started in EGEE-II, developments lead by IN2P3-CC
Central tool
No remote deployment needed
Testing Grid TCP ports on all Grid nodes registered in GOCDB every 2 minutes (3000 tests)
Aggregated connectivity results and history shown on a webinterface
Interfaced with some other tools: Nagios, CIC portal...
Users: Sites, ROCs, COD, ENOC

5. DownCollector (2/2) Status Future
Tool released , mature and stable
Very used and appeared giving useful results
Future
Some interest by CNRS and IN2P3, but still unclear
Equivalent in Nagios?

6. perfSONAR-lite TroubleShooting Services (1/3)
Site A
Probe A
2 - Request
ENOC
1 - Request
4 - Result
Central server
3 - e2e measurement
Users
5 - Result
Site B
Probe B
Started in EGEE-III, entirely designed by SA2
Developments lead by DFN/Erlangen as a SA2 partner
Central server orchestrating on demand e2e measurements between light probes hosted by Grid sites
EGEE driven improvements of standard perfSONAR framework
Authentication & Authorisation mapped from GOCDB’s roles

7. perfSONAR-lite TSS (2/3)

8. perfSONAR-lite TSS (3/3)
Expected users: Sites, ROCs, ENOC...
Status: Tool nearly ready, but missing maturation phase
Suffered some staff movements and licensing issues
Not yet production deployment, but promising testbed with 3 sites
First production release: End of March
Future: May be followed and used outside EGI
DFN and CNRS currently looking for some applications and fundings around
Could be interesting for NRENs to host probes on demarcation points

9. Conclusion from SA2
Network monitoring and troubleshooting tools are key dependencies for networking support
SA2 really suffered from this area
Collaboration with network providers is essential
Good network monitoring also eases Grid operations
Lot of constraints are hardening good ideas or standard tools
Multi domains, security policies, data disclosure, manpower, scale etc.
We were unable to obtain network performance monitoring
We suggest DownCollector and perfSONAR-lite TSS for interest in EGI