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... for ml2/ovs you will need to use isolated metadata  https://docs.openstack.org/neutron/latest/admin/archives/config-agents.html#... 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@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@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*

Any thoughts? Στις Τετ 29 Ιουν 2022 στις 20:06 ο χρήστης GEORGIOS PAPATHANAIL < papathanail@uom.edu.gr> έγραψε:

I did the installation based on this https://docs.openstack.org/install-guide/openstack-services.html (queens version)

In my previous installation (I use VMWare instead of XenServer) the only thing that I did is to enable promisc mode in VSphere, and the VMs were reachable.

I am using ml2 plugin and linuxbridge (default installation)

Does it need extra configuration?

Thanks

-- *George Papathanail* *Associate Researcher* *Department of Applied Informatics* *University of Macedonia*