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WP4 - Monitoring

WP4 - Monitoring. Progress report. sylvain.chapeland@cern.ch. Overview. Work completed New monitoring sensor agent (MSA) Work in progress Alarm display Repository : database and server Transport Work to be done. MSA. Release 1.3 Deployed on ~325 nodes at CERN New features:

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WP4 - Monitoring

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  1. WP4 - Monitoring Progress report sylvain.chapeland@cern.ch WP4 Workshop - CERN

  2. Overview • Work completed • New monitoring sensor agent (MSA) • Work in progress • Alarm display • Repository : database and server • Transport • Work to be done WP4 Workshop - CERN

  3. MSA • Release 1.3 • Deployed on ~325 nodes at CERN • New features: • Smart reconfiguration • Multiple transport mechanism supported • Self-monitoring capabilities • Tree-like configuration • Works on Solaris WP4 Workshop - CERN

  4. Alarm display To be released in July WP4 Workshop - CERN

  5. Repository • Multithreaded server being implemented • Currently, data still stored in flat files. • Two relational databases being tested : • MySQL • Oracle WP4 Workshop - CERN

  6. Repository : database structure • Database aimed at storing samples: • Metric identifier WHAT • Target identifier WHERE • Timestamp WHEN • Value • Value is very different from one metric to the other. WP4 Workshop - CERN

  7. Repository : database structure One table per metric WP4 Workshop - CERN

  8. Repository : database structure CPU load WP4 Workshop - CERN

  9. Repository : database structure Network traffic WP4 Workshop - CERN

  10. Repository management • Not clear what to use for subscription mechanism • A simple ASCII protocol might be used • Server side already implemented, missing client implementation of C API and subscription. WP4 Workshop - CERN

  11. Transport • UDP transport easy to use and deploy, but: • Data loss : 0.01% to 10% • Currently no security • Lack of scalability • New transport to be released in July. WP4 Workshop - CERN

  12. Transport • TCP: direct connection to server not scalable. • Possible solution: use of proxies • Proposed transport mechanism: pull data, file transfer, proxy collector. WP4 Workshop - CERN

  13. Transport Repository Proxy Proxy MSA MSA MSA MSA MSA MSA MSA MSA WP4 Workshop - CERN

  14. Transport Repository Proxy MSA B FILE B1 MSA A FILE A1 FILE A2 FILE B2 WP4 Workshop - CERN

  15. Transport Repository Proxy File P1: FILE A1 ; FILE A2 GET * MSA B FILE B1 MSA A FILE A1 FILE A2 FILE B2 WP4 Workshop - CERN

  16. Transport Repository Proxy File P1: FILE A1 ; FILE A2 ; FILE B1 ; FILE B2 GET * MSA B FILE B1 MSA A FILE A1 FILE A2 FILE B2 WP4 Workshop - CERN

  17. Transport Repository File P1: FILE A1 ; FILE A2 ; FILE B1 ; FILE B2 GET * Proxy File P1: FILE A1 ; FILE A2 ; FILE B1 ; FILE B2 MSA B FILE B1 MSA A FILE A1 FILE A2 FILE B2 WP4 Workshop - CERN

  18. Transport Repository File P1: FILE A1 ; FILE A2 ; FILE B1 ; FILE B2 DEL P1 Proxy File P1: FILE A1 ; FILE A2 ; FILE B1 ; FILE B2 MSA B FILE B1 MSA A FILE A1 FILE A2 FILE B2 WP4 Workshop - CERN

  19. Transport Repository File P1: FILE A1 ; FILE A2 ; FILE B1 ; FILE B2 Proxy DEL A1 A2 DEL B1 B2 MSA B FILE B1 MSA A FILE A1 FILE A2 FILE B2 WP4 Workshop - CERN

  20. Transport Repository File P1: FILE A1 ; FILE A2 ; FILE B1 ; FILE B2 Parse and store Proxy MSA B MSA A WP4 Workshop - CERN

  21. Transport • Transport safe • Duplication of transport possible • Need a file index. Repository only keeps highest index. File already inserted in DB are rejected. • Can be implemented with FTP. • But then polling required. • Push/Pull possibles WP4 Workshop - CERN

  22. Transport • Open issue : security • Possible use of Grid-FTP • Other solutions also easy to implement • Tunneling, or use of wide spread libraries • Anyway, key distribution? Are there any preferred method? WP4 Workshop - CERN

  23. Work to be done • Complete work in progress • Architecture defined, but implementation choices to be tested and clarified • Integration: • Lcfg object • Sensors : what do we need? WP4 Workshop - CERN

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