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

• SAM Instances

Documentation

Introduction

MyEGI

• MyEGI documentation
• MyEGI Web Services Specification

NCG

• NCG Component Overview

ATP

• Aggregated Topology Provider (ATP)

User guides

MyEGI, Nagios, POEM

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

• SAM Probes
• Probes for the detection of unsupported gLite 3.1/3.2 products or end-points in GOCDB associated to retired service types
• Probe development policy

Developers guides

Probes development, SAM PI

Support

FAQs and Troubleshooting guides

Tests and probes

• SAM Tests terminology and types

• 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

• ROC_OPERATORS

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

• OPS_MONITOR

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

• OSG
• OSG_CRITICAL

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

• SAM/Nagios EGI Support FAQ
• SAM/Nagios EGI Support Rotas

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)