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https://issues.apache.org/jira/browse/SOLR-10654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17865296#comment-17865296
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David Smiley commented on SOLR-10654:
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The test using solr-prometheus-output.txt, which I asked for, is intended to
ensure we don't accidentally remove an exported metric due to some internal
renaming choice or a change in the type of metric. That's it. It also serves
as an integration test. The test may fail when metrics are added, yes, but we
need only re-save the file. Ideally this test would have docs to state such
things, and maybe cater to the situation of needing to re-save the file (such
as by dumping the output to a file that can then be saved-over.
> Expose Metrics in Prometheus format DIRECTLY from Solr
> ------------------------------------------------------
>
> Key: SOLR-10654
> URL: https://issues.apache.org/jira/browse/SOLR-10654
> Project: Solr
> Issue Type: Improvement
> Components: metrics
> Reporter: Keith Laban
> Priority: Major
> Attachments: prometheus_metrics.txt
>
> Time Spent: 7h 20m
> Remaining Estimate: 0h
>
> Expose metrics via a `wt=prometheus` response type.
> Example scape_config in prometheus.yml:
> {code:java}
> scrape_configs:
> - job_name: 'solr'
> metrics_path: '/solr/admin/metrics'
> params:
> wt: ["prometheus"]
> static_configs:
> - targets: ['localhost:8983']
> {code}
> [Rationale|https://issues.apache.org/jira/browse/SOLR-11795?focusedCommentId=17261423&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-17261423]
> for having this despite the "Prometheus Exporter". They have different
> strengths and weaknesses.
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