Open Stack

On Tue, 2022-06-28 at 14:08 +0300, GEORGIOS PAPATHANAIL wrote:
> Hi,
> 
> My instances are on a flat network.
> They get public IP address.
> The security group is configured correctly.
> 
> I did not launch an instance with —config-drive-true.
if they are booting on an external flat newtork with public ips then you need
to configre neutron to serve metadta by the dhcp agent if you are usign ml2/ovs
since there is no neutron router to impelement the metadta proxy in that configurtion.

if you are using ml2/ovn the docs for configuring this are here
https://docs.openstack.org/neutron/latest/contributor/internals/ovn/metadata_api.html
for ml2/ovs you will need to use isolated metadata 
https://docs.openstack.org/neutron/latest/admin/archives/config-agents.html#dhcp-agent-setup-ovs-plug-in 

you might find 
https://docs.openstack.org/operations-guide/ops-network-troubleshooting.html
and 

https://www.rdoproject.org/networking/networking-in-too-much-detail/
useful too for general overview of how things work.

> 
> 
> Στις Τρί 28 Ιουν 2022 στις 14:04 ο χρήστης Eugen Block <eblock at nde.ag>
> έγραψε:
> 
> > Hi,
> > 
> > this is one of the most common issues users post report in this list.
> > Did you try to find a solution? Do your instances in the flat network
> > get an IP address? If not, try to launch instances with
> > "--config-drive true". If the instances do get an IP, do your
> > security-group rules allow access?
> > 
> > 
> > Zitat von GEORGIOS PAPATHANAIL <papathanail at uom.edu.gr>:
> > 
> > > I am facing the following issue with my new Openstack installation. The
> > > installation is a little bit weird and to elaborate more, I have a
> > > controller and a compute node running as VMs in XenServer.
> > > 
> > > The compute node has nested virtualization enabled and uses qemu in order
> > > to provision VMs. I have a provider flat network that has a public range
> > of
> > > IPs and VMs use this network.
> > > 
> > > I am able to create instances and access them via console, but I can't
> > ping
> > > them or ssh even if they have public IPs.
> > > 
> > > I am not very familiar with Xen Server, is there any configuration that
> > is
> > > needed (bridges, promisc mode, etc)?
> > > 
> > > --
> > > *George Papathanail*
> > > *Associate Researcher*
> > > *Department of Applied Informatics*
> > > *University of Macedonia*
> > 
> > 
> > 
> > 
> > --
> *George Papathanail*
> *Associate Researcher*
> *Department of Applied Informatics*
> *University of Macedonia*