[tor-bugs] #31056 [Core Tor/Tor]: Hidden service sometimes unable to create circuit

[Tor Bug Tracker & Wiki]

#31056: Hidden service sometimes unable to create circuit
--------------------------+------------------------------
 Reporter:  dylanholand   |          Owner:  (none)
     Type:  defect        |         Status:  new
 Priority:  High          |      Component:  Core Tor/Tor
  Version:  Tor: 0.3.5.8  |       Severity:  Normal
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+------------------------------
 I have a dedicated server with a few onoin-services on it. One of the
 services has some traffic to it and this service can't be reached a few
 times every day, lasting 5-15 minutes.

 While it's not available, the other onions is working just fine, it's just
 this particular .onion (which is the important one).

 The service is not of the kind that would get ddos'ed or similar, however,
 it can have some heavy peaks in traffic, which at some degree correlate
 with the unavailability. However, no server process is under heavy stress
 and other services, including other hidden services, is functioning
 normally)

 {{{
 #!div style="font-size: 80%"
 Server specs:
   {{{
 OS: CentOS/RHEL 7
 TOR: 0.3.5.8-1.el7

 torrc config:

 RunAsDaemon 1
 DataDirectory /var/lib/tor
 TransPort 9040
 TransListenAddress 127.0.0.1
 DNSPort 127.0.0.1:54
   }}}
 }}}


 {{{
 #!div style="font-size: 80%"
 A few lines from journalctl output, "xxx" is the onion that can't be
 reached:
   {{{
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Couldn't relaunch rendezvous circuit to '[scrubbed]'.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Couldn't relaunch rendezvous circuit to '[scrubbed]'.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
 [scrubbed] for service xxx.
 Tor[19172]: Giving up launching first hop of circuit to rendezvous point
   }}}
 }}}

 I have not found a similar issue in other tickets and it's very important
 that I can provide 100% uptime for this .onion.

 Many thanks for your time reading this, highly appreciated.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31056>
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