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IVOA Operations Interest Group

Chair: Mark Taylor
Vice Chair: Steve Groom

IVOA Operations Interest Group Charter

Goal of the IVOA Operations Interest Group

Coordinate and publicize activities of individuals, institutions and groups interested in facilitating robust operations of distributed astronomy applications, particularly those based upon implementations of IVOA protocols.

Specific responsibilities

  1. Publicize existing forums and encourage new ones for monitoring services, notifications, discussions and questions regarding “real-time” operations of VO / distributed services.
  2. Promote discussion within the IVOA on standards and practices that would increase the reliability of VO implementations.
  3. Develop nominal implementation strategies for VO services as guides to best practice in the operational use of VO protocols.
  4. Periodically provide reports to the IVOA executive and WGs summarizing availability, quality and usage statistics for distributed services and VO protocols.
  5. During the IVOA standards review process, assess the validation capabilities that are now required as part of new standards.


Chair: Mark Taylor

Vice Chair: Steve Groom

Operations Projects

Procedure for Removing Non-Responsive Services

VO-Paris has presented a plan for a process for removing non-responsive services from the Registry which was presented to the Exec and discussed in the Interest Group. A revised version will be provided.

A revised procedure was adoped by the IVOA in October 2016.

Federated Validation Services

Coordination of VO validation services

It was agreed that the three sites that are currently collecting validation statistics will try to coordinate their activities. The first step is to provide a standard set of identifiers for issues so that results from the validators can be compared. This will allow us to compare the validator results and 'validate' the validators.

NCSA/HEASARC Validation tests (Conesearch and SIA)

VO Paris Validation Test

ESA Validation Tests

Data from these documents has been combined into the following documents:

Analysis of the results from these documents suggests that the validators are making somewhat different queries and that any given validator is only testing a subset of all poassible errors. Negative results regarding a service are generally valid. In principle a service should pass all validators.

Identifying Operational Clients

The wiki page UserAgentUsage discusses best practice for use of the HTTP User-Agent header to identify clients involved in operations-related (as opposed to end-user) service queries. At time of writing (11/2018) this is work in progress. It might turn into a Note at some point.

Mailing list
Operations Interest Group discussion forum (archive)

Operations sessions

  • General discussion of operational issues of VO services
  • Monitoring and validation reviews of VO services
  • Development and deployment of validation services
  • Discussion of operational best practice in VO service deployment and operations.

IVOA Interoperability Meetings

  • InterOpOct2019Ops - Groningen
    • Session 1: Operations
  • InterOpMay2019Ops - Paris
    • Session 1: Operations Status and Review
    • Session 2: Facility Operations and Current Issues
  • InterOpNov2018Ops - College Park
    • Session 1: Operations
  • InterOpMay2018Ops - Victoria
    • Session 1: Status, Operational Issues and Validation
    • Session 2: Experience and Issues
  • InterOpOct2017Ops - Santiago
    • Session 1: Implementations and Operational Issues
  • InterOpMay2017-Ops - Shanghai
    • Session 1: Implementations and Ops Issues
    • Session 2: Ops review and Validation
  • InteropOct2016Ops - Trieste
    • Session 1: Operations
  • InterOpMay2016-Ops - Cape Town
    • Session 1: Operations review and Validation
    • Session 2: Implementations and Ops Issues
  • InteropOct2015Ops - Sydney
    • Session 1: Building VO services
    • Session 2: VO Operations
  • InteropOpsJune2015 - Sesto
    • Session 1: Group organization and current statistics of VO services
    • Session 2: Using validation, monitoring and notification services


The earlier list of validators is now subsumed into the IvoaValidatorsSummary.

Continuous hourly monitoring of VO services is available at the HEASARC


IVOAOpsCharter-v20150327.docx: Charter for the IVOA Operations Interest Group

Topic attachments
I Attachment Action Size Date Who Comment
Unknown file formatdocx CSValidationComparison.docx manage 24.0 K 2015-09-25 - 13:48 TomMcGlynn  
PDFpdf ESA-EuroVO-Registry-Validator.pdf manage 583.6 K 2017-05-24 - 07:10 KostandinVrioni ESA-EuroVO-Registry-Validator
Unknown file formatdocx IVOAOpsCharter-v20150327.docx manage 19.8 K 2015-05-07 - 15:19 TomMcGlynn Charter for the IVOA Operations Interest Group
Unknown file formatdocx NCSA_HEASARC_Validator_Tests.docx manage 16.2 K 2015-07-06 - 14:32 TomMcGlynn  
PDFpdf Proposal-Registry-QA-v0.4.pdf manage 165.0 K 2015-06-17 - 12:33 RenaudSavalle Proposal for Quality Assurance of Services in the VO
Unknown file formatdocx SIAValidationComparison.docx manage 20.7 K 2015-09-28 - 14:03 TomMcGlynn  
Unknown file formatdocx VOParis_Validator_Tests-v1.0.docx manage 24.1 K 2015-07-10 - 15:38 RenaudSavalle List of tests performed by VOParis CS, SIA, and SSA validators
Unknown file formatsql vo-curation-dml.alignment-exercise.sql manage 56.3 K 2015-07-14 - 12:44 TomMcGlynn  
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Topic revision: r27 - 2019-10-12 - MarkTaylor
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