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I'm experiencing same problem as described here Strange public listening ports in Passenger.

Phusion Passenger is randomly opening ports and I have no idea how to further investigate it.

  • Passenger Version : 6.0.14
  • ruby-2.4.1
  • nginx version: nginx/1.20.2
  • Ubuntu 18.04.6 LTS
  • Linux 4.15.0-192-generic
netstat -lp
tcp        0      0 localhost:45363         0.0.0.0:*               LISTEN      13226/Passenger Rub
tcp        0      0 localhost:34515         0.0.0.0:*               LISTEN      7653/Passenger Ruby

ps -p 7653 -o pid,vsz=MEMORY -o user,group=GROUP -o comm,args=ARGS
7653 427776 user1    user1    ruby            Passenger RubyApp: /home/user1/apps/application1/current (production)

Thank you in advance for any tips how to solve this problem.

jeanlucdiscard
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1 Answers1

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It looks like this is by design. They can be used to manage the associated backend apps in some ways. See here: https://github.com/phusion/passenger/pull/2173 for a discussion.

Ben Trewern
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