run this on the host:
strace host www.google.com
and scan the output.
more efficient then guessing.
--guy
On 03/22/2015 12:50 PM, Gabor Szabo wrote:
Hi,
I run an Ubuntu based VPS on Linode.
I few hours ago the machine stopped resolving hostnames.
I think it was after an aptitude
[mailto:linux-il-boun...@cs.huji.ac.il] On Behalf Of Gabor Szabo
Sent: Sunday, March 22, 2015 1:14 PM
To: guy keren
Cc: linux-il
Subject: Re: Server stopped DNS name resolution
I tried that, and although I am not sure what should I look for in there it
seems to be claiming
rt_sigsuspend
Hi,
I run an Ubuntu based VPS on Linode.
I few hours ago the machine stopped resolving hostnames.
I think it was after an aptitude safe-upgrade and a reboot, but I am not
sure. Maybe was like this earlier.
It takes ages to ssh to it, once I got to the machine I can ping IP
addresses from it, but
1. Sounds like the ip's in your resolv.conf are wrong. Where does the
server get them from? ip's 8.8.8.8 and 8.8.4.4 are the Google unicast
public DNS servers. They are reliable but it's not optimal for a server to
have to reach out to them on every query.
2. The ssh login is possibly slow
They basically told you use google dns servers instead/in addition to
ours, could be they were suffering problems with their DNS or they
changed IPs...
2015-03-22 13:13 GMT+02:00 Gabor Szabo ga...@szabgab.com:
I tried that, and although I am not sure what should I look for in there it
seems to
Thanks to the educated response to all of you.
The Google nameservers got me a temporary solution and after a while they
have fixed their own nameservers.
regards
Gabor
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Linux-il@cs.huji.ac.il
I tried that, and although I am not sure what should I look for in there it
seems to be claiming
rt_sigsuspend([];; connection timed out; no servers could be reached
I tried to telnet 72.14.179.5 53 (one of the DNS servers) and that did not
got a response.
Anyway, Linode support told me to
On 22/03/15 12:50, Gabor Szabo wrote:
Hi,
It takes ages to ssh to it, once I got to the machine I can ping IP
addresses from it, but I cannot ping anything with a hostname.
Add to the sshd_config file the following line:
UseDNS no
This will speed up the ssh connection regardless of whether
Google unicast public DNS servers
s/unicast/anycast/, I keep forgetting that term.
On 22 March 2015 at 22:28, Amos Shapira amos.shap...@gmail.com wrote:
1. Sounds like the ip's in your resolv.conf are wrong. Where does the
server get them from? ip's 8.8.8.8 and 8.8.4.4 are the Google unicast
