[tor-bugs] #5633 [Tor Relay]: Clock syncing feature

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#5633: Clock syncing feature
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 Reporter:  cypherpunks  |          Owner:                  
     Type:  enhancement  |         Status:  new             
 Priority:  normal       |      Milestone:  Tor: unspecified
Component:  Tor Relay    |        Version:  Tor: unspecified
 Keywords:               |         Parent:                  
   Points:               |   Actualpoints:                  
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Comment(by tmpname0901):

 > The problem is that a clock can't be accessed or modified by user, even
 as root.

 I assume that cypherpunks is referring to OpenVZ containers.

 I've had a number of OpenVZ containers running Tor.  Many had inaccurate
 system times, sometimes grossly inaccurate.  However I have uniformly
 found that VPS vendors will fix the time problem if you inform them of it.
 OpenVZ containers get their system time from the host, so if your VPS is
 inaccurate that means the host is inaccurate, which in turn means every
 container being hosted is inaccurate.

 Do this:

 1. Set your VPS to the local time zone, e.g.:

   # cp -fp /usr/share/zoneinfo/US/Central /etc/localtime; yum -y reinstall
 tzdata; reboot

 2. Use ntpdate to measure the gap between accurate time and system time,
 and send the output to you vendor:

   # ntpdate -q 0.us.pool.ntp.org

 Try it.  I think you'll find that your VPS vendor will realize that fixing
 your problem means also fixing their own problem.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5633#comment:2>
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