SAM
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The Service Availability Monitoring (SAM) system is used to monitor the resources within the production infrastructure. SAM monitoring data is used for calculation of availability and reliability of grid sites. It includes the following components:
- probes: a test execution framework (based on the open source monitoring framework Nagios) and the Nagios Configuration Generator (NCG)
- the Aggregated Topology Provider (ATP), the Metrics Description Database (MDDB), and the Metrics Results Database (MRDB)
- the message bus to publish results and a programmatic interface
- the visualization portal (MyEGI).
SAM tool instances
Documentation
- SAM Release Notes
- SAM Administrator's Guide
- SAM/NAGIOS Reference Card for sitemanger
- User Guides (Nagios, MyEGI, POEM]
- FAQs
- Troubleshooting
Monitoring uncertified sites
- Setting NAGIOS to Monitor Uncertified Sites
- IMPORTANT. EGI.eu provides catch-all WMS and BDII services for the monitoring of uncertified sites. The service is open for use, and your NGI can easily apply here.
Tests and probes
- Terminology
- Probe development policy
- SAM released probes
- EMI Nagios and status (ARC, dCache, gLite, UNICORE)
Profiles
Main profiles
FOR EGI AVAILABILITY/RELIABILITY COMPUTATION
- Resource Centres: ROC_CRITICAL - the profile for Availability/Reliability computation of EGI Resource Centres (OPS VO). It replaces WLCG_CREAM_LCGCE_CRITICAL as of 01 Jan 2012.
FOR GENERATION OF ALARMS IN THE OPERATIONS DASHBOARD IN CASE OF FAILURE
OTHERS
WLCG
- WLCG_CREAM_CRITICAL
- WLCG_CREAM_LCGCE_CRITICAL profile used for WLCG Availability/Reliability computation
- WLCG_CRITICAL
- WLCG_CRITICAL_TEST
OSG
Tools information pages
MyEGI
NCG
Databases
- Aggregated Topology Provider (ATP)
- Profile Management Database (POEM)
- Metric Result Store (MRS)
Related Procedures
- Validate ROC or NGI Nagios Procedures: PROC05
- Setting a Nagios test status to OPERATIONS: PROC06
- Adding new probes to SAM: PROC07
- Management of the EGI OPS Availability and Reliability Profile: PROC08
SAM/Nagios EGI Support Procedures
Resources
- SAM Project home page
- SAM milestones
- Multi Level Monitoring Overview
- Computation of Service Availability Metrics in ACE
- SAM-PI documentation (Non official wiki page containing SAM PI examples)
- Andreade, P.; M. Babik, M.; Bhatt, K; Service Availability Monitoring Framework Based On Commodity Software; CHEP12, March 2012 (poster)