[Openstack] Instance can not ping each other

Mark Loza mloza at morphlabs.com
Fri Feb 27 11:57:25 UTC 2015


Did you check if the neutron agents are all alive?

# neutron agent-list

On 2/27/15 3:49 PM, Mitchell Chen wrote:
> Hi All,
> I followed the OpenStack icehouse installation guide to successfully 
> install a five node system, one control node, one neutron and three 
> compute nodes.  Inside of the instance, I can ping other instances’ 
> virtual IP address and outside internet fine. Recently, we decided to 
> move all the nodes to a lab. So, I powered down the five nodes before 
> the move and powered up them afterward. All the physical network 
> connections were exactly the same as they were before the move. But, I 
> can not even ping other instance after the five nodes up again.
> I typed “route –n” inside of the instance, no any IP is shown. What’s 
> wrong? Please help how I can get the instance networking back.
> Thanks,
> Mitchell
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