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This patch introduces a new section displaying failover coordinator metrics. It includes panels for coordinator status (active/passive), and instances visible to each coordinator.

Need for #TNTP-197

Closes #247

If this pull request introduces support for new metrics, do not forget to

  • add Grafana panel;
  • run make update-tests to build new dashboard artifacts;
  • add example application code to generate non-null metrics;
  • attach a screenshot of a new panel to the PR description;
  • add new Telegraf tag key, if relevant,
    • to all telegraf.conf files,
    • to "Grafana dashboard" documentation page;
  • add alert example, if relevant,
    • to alerts.yml,
    • to "Alerting" documentation page;
  • update supported_metrics.md.

In any case, do not forget to

  • link an issue;
  • add a CHANGELOG entry;
  • update documentation guidelines;
  • update README guidelines.

This patch introduces a new section displaying failover coordinator
metrics. It includes panels for coordinator status (active/passive),
and instances visible to each coordinator.

Need for #TNTP-197

Closes tarantool#247
@mandesero mandesero force-pushed the mandesero/coordinator-monitoring branch from 3e6e790 to c861e56 Compare December 9, 2025 12:20
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Support for monitoring the failover coordinator

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