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