mlbiscoc commented on issue #705:
URL: https://github.com/apache/solr-operator/issues/705#issuecomment-2151008756
Did a bit of digging and I think the cause is because of the metrics api in
Solr being different from 8->9.
Solr 8:
` "ADMIN./admin/ping.totalTime":4869095628,
"ADMIN./admin/ping.distrib.totalTime":2035581611,
"ADMIN./admin/ping.local.totalTime":0,`
Solr 9:
`"ADMIN./admin/ping.totalTime":3739370399,
"ADMIN./admin/ping.totalTime":3994744966,`
I think the prometheus exporter is scraping Solr 8's api but didn't append
the correct labels of `distrib`. Solr 9 had a
[change](https://issues.apache.org/jira/browse/SOLR-14401) that removed
`distrib` and that kind of fixed the problem in Solr 9. I haven't actually
tested this and just did digging but the config in needs to be changed for Solr
8's prometheus exporter to probably remove the duplicate metric. I'd give it a
shot if I were you or maybe delete the `<str
name="expr">solr\.core\..*:ADMIN\..*</str>` line to remove that metric from
being output from the prometheus exporter
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