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Re: [tor-bugs] #29681 [Internal Services/Tor Sysadmin Team]: replace munin with prometheus and grafana

#29681: replace munin with prometheus and grafana
-------------------------------------------------+-------------------------
 Reporter:  anarcat                              |          Owner:  anarcat
     Type:  task                                 |         Status:
                                                 |  accepted
 Priority:  Medium                               |      Milestone:
Component:  Internal Services/Tor Sysadmin Team  |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:                                       |  Actual Points:
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by anarcat):

 more plugins that we might want to setup in Prometheus, after the audit
 performed during the removal of Munin:

  * '''spamassassin''': ham/spam/total counts, looks for `spamd:
 ((processing|checking) message|identified spam|clean message)` in
 mail.log, could be replaced with [https://github.com/google/mtail ​mtail]
  * '''postgres-wal-traffic_''': should be covered by the postgres_exporter
 mentioned above, otherwise hook `psql -p "$port" --no-align --command
 'SELECT * FROM pg_current_xlog_insert_location()' --tuples-only --quiet |
 tr -d /,` into the node_exporter
  * '''ksm stats''': extra memory statistics, might not be very important
  * '''haproxy''': https://github.com/prometheus/haproxy_exporter
  * '''per VM disk usage''': see  #29816
  * '''vsftpd''': custom mtail plugin, no known exporter or dashboard

 See the full review in #29682 for details.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29681#comment:8>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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