[tor-bugs] #29864 [Internal Services/Tor Sysadmin Team]: consider replacing nagios with prometheus

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#29864: consider replacing nagios with prometheus
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 Reporter:  anarcat                              |          Owner:  tpa
     Type:  project                              |         Status:  new
 Priority:  Low                                  |      Milestone:
Component:  Internal Services/Tor Sysadmin Team  |        Version:
 Severity:  Major                                |     Resolution:
 Keywords:                                       |  Actual Points:
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by anarcat):

 the magic formula is, according to @bbrazil on #prometheus:

 {{{
 avg_over_time(up{job="node"}[7d])
 }}}

 [[Image(https://paste.anarc.at/publish/2019-08-19-VRTQYG6TD1s/magic.gif)]]

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29864#comment:5>
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