Experience of xrootd monitoring for ALICE at RDIG sites
G.S. Shabratova JINRA.K. Zarochentsev SPbSU
Xrootd Monitoring
• Static monitoring - Bdii • Dynamic monitoring – Monalisa and “xRootd
federation monitoring”
2 xrootd BDII versions(from Claudiu Schiaua ( [email protected]))
• Xrootd information service (xis) 2009• glite-info-provider-SE_xrootd (gip) 2010
xis
• http://niham.nipne.ro/xis/xis.install.html• 2-d xrootd serivce on xis server :
root://xishost: 2194• Xrootd clients on xrootd servers.• Xrootd client on information provider (bdii
server)
gip
• http://indico.cern.ch/getFile.py/access?contribId=0&resId=0&materialId=slides&confId=77435
• http://niham.nipne.ro/NIHAM-repo/instr.html Xrootd client on gip and bdii server Scheme:GlueSALocalID=xroot:SA
>ClueVOinfoLocalID=xroot:VOID:alice
xrootd in ldap
DPM and xrootd in BDII
http://gstat2.grid.sinica.edu.tw/gstat/site/RU-SPbSU/treeview/bdii_site/alice23.spbu.ru/
http://gstat2.grid.sinica.edu.tw/gstat/ldap
DPM
XROOTD
Requirements to dynamic monitoring
• Transfers details:– Host out (ip)– Host in (ip)– Size of file– Number of files
• Statistic details:– Size of packages for host out (in) by time– Errors
Proposed Architecture to Monitoring & Control the Xrootd in ALICE
Long HistoryDB
MonALISA
Network Monitoring
ApMon
XROOTDSERVER
SystemMonitoring
MonaLisaXrootd Repository
Aggregated Data
Alerts
Actions
Xroootd Monitoring and Control, Harish Arora, Cern
ControlModule
Control / Update
MonALISA
Network Monitoring
ApMon
XROOTDSERVER
SystemMonitoring
ControlModule
MonALISA
Network Monitoring
ApMon
XROOTDSERVER
SystemMonitoring
ControlModule
MonALISA on http://alimonitor.cern.ch/display
MonALISA on http://alimonitor.cern.ch/display
MonALISA on http://alimonitor.cern.ch/display
MonALISA from gui client
• GUI client from alimonitor.cern.ch:
• Or form http://monalisa.caltech.edu/monalisa.htm :
MonALISA from gui client
MonALISA from console
• Need:– Monalisa Repository from
http://monalisa.caltech.edu/:
– And monalisaWSClients :
MonALISA from console
• Result:
xRootd federation monitoring
• 17 July 201215.45-16.00ATLAS Off-Grid Sites (Tier-3) Monitoring A.S. Petrosyan, D.A. Oleynik, S.D. Belov, J. Andreeva, I.S. Kadochnikov (on behalf of the ATLAS collaboration)
Data flow for XRootD• Both summary and detailed events
gatherer implemented as Linux daemon• Summary data goes directly to Ganglia• File transfer data can be stored in local
PostgreSQL and then presented via Ganglia
• Detailed data can be delivered to ActiveMQ directly
• Data being sent to global level:• Domain from, host and ip address• Domain to, host and ip address• User• File, size• Bytes read, written• Time transfer started and finished
1917.07.2012 GRID'2012, JINR, Dubna
Conclusions:• Bdii monitoring works, but not supported and
rarely used• Monalisa monitoring works, but can not
monitor separate transfer• “xRootd federation monitoring” – we wait it in
the near future.
Many thanks:
• Sergey Belov• Daniil Oleynik• Artem Petrosyan• Andrey Kiryanov• And etc
Questions?