From EGIWiki
Revision as of 17:35, 13 May 2014 by Eimamagi (talk | contribs) (GOCDB)
Jump to: navigation, search
Main Roadmap and Innovation Technology For Users For Resource Providers Media

Workbenches: Open issues
Scenario 1
VM Management
Scenario 2
Data Management
Scenario 3
Information Systems
Scenario 4
Scenario 5
Scenario 6
Scenario 7
Federated AAI
Scenario 8
VM Image Management
Scenario 9
Scenario 10
Scenario 11

Scenario 5: Reliability/Availability of Resource Providers

Leader: Emir Imamagic, SRCE

Scenario collaborators

Role Institution Name
Scenario leader SRCE Emir Imamagic
Collaborator INFN Daniele Cesini
Collaborator CESGA Ivan Diaz
Collaborator CESGA Alvaro Simon

What Monitoring means in this context

Monitoring in this context is the monitoring of the availability and reliability of the cloud resources provided by the resource providers. What will be tested is the possibility for an hypothetical user to instantiate at least one predefined virtual machine within a given period of time. It consists of an "external" monitoring, no data will be collected from inside the VMs or underlying virtualization systems. Monitoring the capabilities of the cloud resource providers in terms of how many resources are available is beyond the scope of this Scenario, at least in its initial phase. Possible evolution of the FedCloud monitoring will be evaluated when the basic monitoring will be in place.

The outcome of Scenario5 will be a system that is able to run at least one probe on each Resource Provider paticipating to the FedCloud.

Given the experience accumulated with the NAGIOS system within the EMI and EGI projects the monitoring framework will be based on NAGIOS. This has also the advantage to ease the integration of the FedCloud monitoring framework in the SAM monitoring sytem used by the EGI project to monitor the production infrastructure.

Integration with EGI operational tools


The following service types can be added to GOCDB:

  • eu.egi.cloud.accounting (required)
  • eu.egi.cloud.information.bdii (required)
  • eu.egi.cloud.storage-management.cdmi 
  • eu.egi.cloud.vm-management.occi (required)
  • eu.egi.cloud.vm-metadata.marketplace

All RPs must enter cloud service endpoints to GOCDB in order to enable integration with other operational tools.

First step is defining site to which the endpoints will belong. There are two possible options:

1. Register resources on an existing EGI site

  • pre-reqs:
    • RP is associated with the existing site and the team handling existing grid services is the same/very close with the cloud team
    • site's Certification Status is "Certified"

2. Register resources on a new site

In both cases service endpoints should have the following flags set:

  • Production: 'N' (If the site is ready to certify the service please contact the fedcloud list first)
  • Beta: 'N'
  • Monitored: 'Y'

Special rules apply for the following service types:

  • eu.egi.cloud.storage-management.cdmi: Endpoint URL field must contain the following info:
  • eu.egi.cloud.vm-management.occi: Endpoint URL field must contain the following info:

Both <image_name> and <resource_name> cannot contain spaces. These attributes map to os_tpl and resource_tpl respectively.

Further information about GOCDB can be find on the following page: GOCDB/Input System User Documentation.


Central SAM instance is deployed for monitoring cloud resources. Once the set of probes is fully defined probes will be included to official SAM release. Once included to official release central instance will be switched off.

SAM instance is on the following address: https://cloudmon.egi.eu/nagios.

Detailed description of tests can be found here.


Nagios probes

Who has the responsibility to develop probes? Following the EGI model probes are developed by the Technology Providers and are integrated into the monitoring framework by the EGI-JRA1 staff that can also provide support during the initial phase of probes development in order to give guidelines and templates.

Information on how to develop NAGIOS probes can be retrieved in the SAM Development Guide

List of available probes within EGI is reported in the SAM Administrrator Guide

The EGI SAM System

The SAM system is basically a framework consisting of:
- Nagios monitoring system (https://www.nagios.org),
- custom databases for topology, probes description and storing results of tests
- web interface MyWLCG/MyEGI (https://tomtools.cern.ch/confluence/display/SAM/MyWLCG)
Probes used to perform check of services are provided by service developers. In case of EMI services probes are provided by EMI product teams. In case of Globus Toolkit, probes are provided by IGE project, etc. SAM team only maintains probes which test internal SAM functions (e.g. communication with messaging system, database synchronization, etc).

More information on SAM can be found here.


The SAM system EGi wiki pages

File:Flessr nagios probes.pdf (Thanks to David Wallom)