[metrics-bugs] #20681 [Metrics/Onionoo]: Remove Onionoo's lock file

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#20681: Remove Onionoo's lock file
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     Reporter:  karsten          |      Owner:  metrics-team
         Type:  enhancement      |     Status:  new
     Priority:  Medium           |  Milestone:
    Component:  Metrics/Onionoo  |    Version:
     Severity:  Normal           |   Keywords:
Actual Points:                   |  Parent ID:
       Points:                   |   Reviewer:
      Sponsor:                   |
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 Onionoo still creates a lock file and fails to start if such a file is
 present.  But the main reason for that file was to avoid concurrent runs
 triggered by hourly cronjobs.  This wouldn't happen anymore, because
 Onionoo uses its own scheduler to start runs.  The only possible issue
 we're preventing is that the operator runs another Onionoo process in
 parallel.  But CollecTor doesn't use a lock file, either.  Is it time to
 remove Onionoo's lock file?  Removing the lock file would make the start
 script somewhat simpler.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20681>
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