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
Introduction
MyEGI
NCG
ATP =
User guides
Administrator guides
- SAM Release Notes
- SAM (including configuration via YAIM)
- SAM/NAGIOS Reference Card for sitemanger
- VO SAM
- 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.
Probes
- Probes
- Probes for the detection of unsupported gLite 3.1/3.2 products or end-points in GOCDB associated to retired service types
Developers guides
Support
FAQs and Troubleshooting guides
Tests and probes
- SAM Tests terminology and types
- Probe development policy
- SAM released probes
- EGI probes for software version monitoring
- EMI Nagios and status (ARC, dCache, gLite, UNICORE)
Profiles
Resource Centre AVAILABILITY/RELIABILITY COMPUTATION
- 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
ALL METRICS THAT NCG CAN USE TO CONFIGURE A SAM NGI
- ROC - all the possible metrics that NCG can use to configure NGI Nagios.
NOTE WELL: starting from SAMUpdate-17 the removal of a metric from ROC profile will immediately cause the removal of the metric from all NGI Nagios instances, i.e. tests will no longer be executed.
EGI.eu central tools and NGI SAM
OTHERS
- GLEXEC - gLExec tests
WLCG
- WLCG_CREAM_CRITICAL
- WLCG_CREAM_LCGCE_CRITICAL profile used for WLCG Availability/Reliability computation
- WLCG_CRITICAL
- WLCG_CRITICAL_TEST
OSG
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
- 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)