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Hi Ritesh,

Can I precisely know is this what you meant in the below email? Kill dnsmasq process and start it again. Then restart the nova-network.

Regards,
Krishnaprasad
From: Ritesh Nanda [mailto:riteshnanda09 at gmail.com]
Sent: Donnerstag, 6. März 2014 02:50
To: Narayanan, Krishnaprasad
Subject: Re: [Openstack] Unable to restore network connectivity after the controller and compute nodes were restarted

Hello Krishna,
Please check the dnsmasq process using ps aux | grep dnsmasq. If it is there you can still kill the process and restart the nova-network , i think dhcp will start giving lease.

Regards,
Ritesh

On Wed, Mar 5, 2014 at 7:30 PM, Narayanan, Krishnaprasad <narayana at uni-mainz.de<mailto:narayana at uni-mainz.de>> wrote:
Hallo all,

In our OpenStack ESSEX (openstack-2012.1-dev) setup, there are multiple compute nodes and the networking mode is based on VLAN manager. The controller and the compute nodes were restarted and I could see that only few VMs have network connectivity and for the others the connections are lost.
For example, I have posted the log of a VM below

cloud-init start-local running: Wed, 05 Mar 2014 20:23:18 +0000. up 4.30 seconds
no instance data found in start-local
cloud-init-nonet waiting 120 seconds for a network device.
cloud-init-nonet gave up waiting for a network device.
ci-info: lo    : 1 127.0.0.1       255.0.0.0       .
ci-info: eth1  : 0 .               .               fa:16:3e:60:36:8d
ci-info: eth0  : 1 .               .               fa:16:3e:59:c7:35
route_info failed

Waiting for network configuration...
Waiting up to 60 more seconds for network configuration...
Booting system without full network configuration...

Can I seek any help to resolve this problem?

Best regards,
Krishnaprasad

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 With Regards

 Ritesh Nanda




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