[Openstack] unable to ping google.com

Drew Weaver drew.weaver at thenap.com
Tue Mar 4 14:40:01 UTC 2014


DNS is clearly resolving but it looks like the machine is unable to reach 74.125.236.206 or the replies are being filtered.

-Drew


From: yalla.gnan.kumar at accenture.com [mailto:yalla.gnan.kumar at accenture.com]
Sent: Tuesday, March 04, 2014 9:08 AM
To: damon.devops at gmail.com
Cc: openstack at lists.openstack.org
Subject: Re: [Openstack] unable to ping google.com

When I change the nameserver to my internal network server, ping is showing  a single line with IP. But following it, no other output.

--------------
$ ping google.com
PING google.com (74.125.236.206): 56 data bytes


From: Damon Wang [mailto:damon.devops at gmail.com]
Sent: Tuesday, March 04, 2014 7:32 PM
To: Gnan Kumar, Yalla
Cc: Sushma Korati; openstack at lists.openstack.org<mailto:openstack at lists.openstack.org>
Subject: Re: [Openstack] unable to ping google.com

Hi Kumar,
I think you need set nameserver to 8.8.8.8 or 8.8.4.4 or other valid DNS at /etc/resolv.conf, besides you need to reset nameserver at your OpenStack's internal network or other places.
8.8.8.7 is a typo, right?
Damon

2014-03-04 21:52 GMT+08:00 <yalla.gnan.kumar at accenture.com<mailto:yalla.gnan.kumar at accenture.com>>:
Ping is not working with these nameservers.

-------------
$ nslookup google.com<http://google.com>
Server:    8.8.8.7
Address 1: 8.8.8.7

nslookup: can't resolve 'google.com<http://google.com>'
-----------------

From: Damon Wang [mailto:damon.devops at gmail.com<mailto:damon.devops at gmail.com>]
Sent: Tuesday, March 04, 2014 7:21 PM
To: Sushma Korati
Cc: Gnan Kumar, Yalla; openstack at lists.openstack.org<mailto:openstack at lists.openstack.org>
Subject: Re: [Openstack] unable to ping google.com<http://google.com>

Hi Kumar,
Please check the vm's /etc/resolv.conf and try to ping 8.8.8.8.
Hope it helps.
Damon

2014-03-04 21:34 GMT+08:00 Sushma Korati <sushma_korati at persistent.co.in<mailto:sushma_korati at persistent.co.in>>:

Hi,



Can you please check if the nameservers provided while creating subnet are correct?

Regards,
Sushma Korati

________________________________
From: yalla.gnan.kumar at accenture.com<mailto:yalla.gnan.kumar at accenture.com> <yalla.gnan.kumar at accenture.com<mailto:yalla.gnan.kumar at accenture.com>>
Sent: Tuesday, March 4, 2014 6:48 PM
To: openstack at lists.openstack.org<mailto:openstack at lists.openstack.org>
Subject: [Openstack] unable to ping google.com<http://google.com>

Hi All,


I have installed openstack Havana on three nodes.
I am able to boot a cirrOS   image. When I log into the VM, I am unable to ping outside network.
-------------
$ ping google.com<http://google.com>
ping: bad address 'google.com<http://google.com>'
$
---------------------

What could be the reason ?


Thanks
Kumar

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