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https://issues.apache.org/jira/browse/HDDS-15333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prathmesh Sapate reassigned HDDS-15333:
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Assignee: Prathmesh Sapate
> Expose volume quota and namespace usage metrics in OM Prometheus endpoint
> -------------------------------------------------------------------------
>
> Key: HDDS-15333
> URL: https://issues.apache.org/jira/browse/HDDS-15333
> Project: Apache Ozone
> Issue Type: Improvement
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Emil Kleszcz
> Assignee: Prathmesh Sapate
> Priority: Minor
> Labels: Newbie
>
> Apache Ozone exposes bucket quota metrics from OM via /prom, for example:
> bucket_utilization_metrics_bucket_used_bytes
> bucket_utilization_metrics_bucket_quota_bytes
> bucket_utilization_metrics_bucket_available_bytes
> bucket_utilization_metrics_bucket_quota_namespace
> These are useful for bucket byte quota monitoring, but there appear to be no
> equivalent Prometheus metrics for native volume quotas, even though volume
> quotas are available via the CLI/API.
> Example CLI output:
> ozone sh volume list
> volume quotaInBytes quotaInNamespace
> batch-accounting 1099511627776 -1
> monitoring 10995116277760 -1
> user -1 -1
> Also, for buckets, the CLI exposes namespace usage:
> ozone sh bucket info /user/ekleszcz
> usedNamespace: 4
> quotaInNamespace: 10
> but OM /prom appears to expose only the namespace quota limit:
> bucket_utilization_metrics_bucket_quota_namespace
> and not a matching used namespace metric.
> This makes it possible to monitor bucket byte quota usage, but not:
> - native volume quota usage
> - volume quota limits via Prometheus
> - bucket namespace quota usage percentage
> Requested improvement:
> Expose OM Prometheus metrics for:
> - volume used bytes
> - volume quota bytes
> - volume available bytes, if applicable
> - volume namespace quota
> - volume used namespace
> - bucket used namespace
> This would allow operators to build Grafana dashboards and alerts for both
> volume and bucket quota usage without relying on custom exporters or CLI
> polling.
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