[tor-bugs] #30028 [Internal Services/Tor Sysadmin Team]: additional prometheus/grafana exporters/dashboards

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#30028: additional prometheus/grafana exporters/dashboards
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 Reporter:  anarcat                              |          Owner:  anarcat
     Type:  project                              |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:
Component:  Internal Services/Tor Sysadmin Team  |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:                                       |  Actual Points:
Parent ID:  #29681                               |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by anarcat):

 upgraded nutans to buster to test the prometheus-bind-exporter package
 without having to mess around with backporting. things seem to work well.
 added the `statistics-channel` internal service (on localhost) so the
 exporter can slurp in the stats, and the metrics are now available
 locally.

 https://kb.isc.org/docs/aa-00769

 next step is to add the bind exporter to the prometheus module (like we
 did for postfix) and dashboard to prometheus. for non-buster hosts,
 backport the package into db.tpo as well. upgrade (say) half the boxes to
 buster and leave the other (say fallax and nova because they might be
 removed anyways and nevii because master so more complicated) on stretch
 to be on the safe side.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30028#comment:5>
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