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Re: [tor-relays] Logs full of "eventdns: All nameservers have failed"



On 03.12.2011 20:58, Steve Snyder wrote:
> I see the same thing, and have a working theory: the network connection is saturated, which delays name resolution, causing the log entries.
> 

We have a server on Gbit that only uses about 400 Mbit/s, and it still
occasionally spits out these messages.

I am using unbound, too.

# cat /etc/resolv.conf
nameserver 127.0.0.1
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 4.2.2.6

# grep "ameserver" /var/log/tor/notices*

notices0.log.1:Dec 02 13:22:08.000 [warn] eventdns: All nameservers have
failed
notices0.log.1:Dec 02 13:22:08.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices1.log.1:Dec 03 03:23:10.000 [warn] eventdns: All nameservers have
failed
notices1.log.1:Dec 03 03:23:10.000 [notice] eventdns: Nameserver 8.8.8.8
is back up
notices2.log:Dec 03 07:17:46.000 [warn] eventdns: All nameservers have
failed
notices2.log:Dec 03 07:17:46.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices2.log.1:Dec 02 07:01:32.000 [warn] eventdns: All nameservers have
failed
notices2.log.1:Dec 02 07:01:32.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices2.log.1:Dec 02 09:08:55.000 [warn] eventdns: All nameservers have
failed
notices2.log.1:Dec 02 09:08:55.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices2.log.1:Dec 02 09:08:58.000 [warn] eventdns: All nameservers have
failed
notices2.log.1:Dec 02 09:08:58.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices2.log.1:Dec 02 11:26:21.000 [warn] eventdns: All nameservers have
failed
notices2.log.1:Dec 02 11:26:21.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices2.log.1:Dec 02 17:15:44.000 [warn] eventdns: All nameservers have
failed
notices2.log.1:Dec 02 17:15:45.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices2.log.1:Dec 02 20:04:43.000 [warn] eventdns: All nameservers have
failed
notices2.log.1:Dec 02 20:04:43.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices2.log.1:Dec 02 21:31:19.000 [warn] eventdns: All nameservers have
failed
notices2.log.1:Dec 02 21:31:19.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log:Dec 03 09:39:41.000 [warn] eventdns: All nameservers have
failed
notices3.log:Dec 03 09:39:41.000 [notice] eventdns: Nameserver 8.8.8.8
is back up
notices3.log.1:Dec 02 07:01:32.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 07:01:32.000 [notice] eventdns: Nameserver 8.8.8.8
is back up
notices3.log.1:Dec 02 09:03:11.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 09:03:11.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices3.log.1:Dec 02 09:03:17.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 09:03:17.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices3.log.1:Dec 02 10:44:30.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 10:44:30.000 [notice] eventdns: Nameserver 8.8.8.8
is back up
notices3.log.1:Dec 02 10:44:32.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 10:44:32.000 [notice] eventdns: Nameserver 8.8.8.8
is back up
notices3.log.1:Dec 02 12:20:12.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 12:20:12.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log.1:Dec 02 13:03:09.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 13:03:10.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log.1:Dec 02 13:50:40.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 13:50:40.000 [notice] eventdns: Nameserver 8.8.8.8
is back up
notices3.log.1:Dec 02 14:08:51.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 14:08:51.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log.1:Dec 02 14:43:09.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 14:43:10.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log.1:Dec 02 14:43:20.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 14:43:20.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices3.log.1:Dec 02 16:16:38.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 16:16:38.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices3.log.1:Dec 02 16:43:05.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 16:43:05.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices3.log.1:Dec 02 17:03:33.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 17:03:34.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log.1:Dec 02 17:26:50.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 17:26:50.000 [notice] eventdns: Nameserver 4.2.2.6
is back up
notices3.log.1:Dec 02 17:34:26.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 17:34:26.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log.1:Dec 02 18:45:57.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 18:45:57.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log.1:Dec 02 22:32:45.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 02 22:32:45.000 [notice] eventdns: Nameserver 8.8.4.4
is back up
notices3.log.1:Dec 03 03:58:02.000 [warn] eventdns: All nameservers have
failed
notices3.log.1:Dec 03 03:58:02.000 [notice] eventdns: Nameserver 8.8.4.4
is back up

-- 
Moritz Bartl
https://www.torservers.net/
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