[Openstack] Trouble connecting to a new VM

Andreas Scheuring scheuran at linux.vnet.ibm.com
Tue Nov 17 08:48:36 UTC 2015

please check your Security Groups first. Per default, only traffic from
other VMs is accepted (Destination: default). If everything is set up
correctly, the simplest way is to setup another rule allowing ingress
icmp for (all ips). Now pings from extneral nodes can reach
the vm.

But this only helps if egress traffic is already working (ping from vm
to your external subnet). If this is not working, please provide more
details about your bridge setup (ovs-vsctl show) and your interface
setup and what exactly is pingable from which node.

(IRC: scheuran)

On Mo, 2015-11-16 at 16:03 -0800, Tyler Couto wrote:
> Hi, 
> I’m setting up a proof of concept openstack instance for a private
> cloud. I have two machines – the first is the controller and network
> node, and the second is a compute node. I started a VM on the compute
> node and assigned a floating ip on my internal subnet. Now I can’t
> ping it or connect to it in other ways. I’m new to openvswitch and
> virtual networking in general, and I’m having trouble figuring out how
> to debug it. I can ping the virtual router’s interface on the network
> node.
> I would love hints for useful debugging tools or where I should look
> first. 
> Thanks!
> Tyler
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