[tor-bugs] #13003 [Onionoo]: Figure out a better strategy to avoid concurrent Onionoo executions

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#13003: Figure out a better strategy to avoid concurrent Onionoo executions
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 Reporter:  karsten  |          Owner:
     Type:  defect   |         Status:  new
 Priority:  normal   |      Milestone:
Component:  Onionoo  |        Version:
 Keywords:           |  Actual Points:
Parent ID:           |         Points:
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 The current strategy for the hourly cronjob to avoid concurrent executions
 is to write a lock file at startup and delete it upon termination.  And if
 there's already such a file at startup the cronjob doesn't start.

 This strategy works fine if there's a live process not succeeding on time.
 It fails pretty badly if a process died, because subsequent runs won't
 start without human intervention.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13003>
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