Thanks for your reply Russell. I installed devstack with latest development releases but I don't see the namespace created with latest version also.
~~~ [stack@devstack-centos-controller devstack]$ grep -i ovn local.conf | grep -v "#" enable_plugin networking-ovn https://git.openstack.org/openstack/networking-ovn enable_service ovn-northd enable_service ovn-controller enable_service networking-ovn-metadata-agent [stack@devstack-centos-controller devstack]$ neutron net-list neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead. +--------------------------------------+-----------+----------------------------------------------------------+ | id | name | subnets | +--------------------------------------+-----------+----------------------------------------------------------+ | 786530e0-775b-482c-8149-c6e751c188da | internal1 | dc4961f7-0be3-46be-a545-da7e3a9add8c 10.10.10.0/24 | | 823cab04-68ea-4d02-843d-ab420e2b0709 | private | 00893897-44b3-42e6-9b2d-568568fae221 fde5:d829:f076::/64 | | | | 10b1f798-729c-4329-ae0a-65946fee80e4 10.0.0.0/26 | | e1ddda3d-eab5-46a9-a880-15f4eab0360c | public | b785fc74-ee29-4d0d-bd1f-234337528024 | | | | d49dc742-9709-4e3b-8a45-68333b7af8b1 | +--------------------------------------+-----------+----------------------------------------------------------+ [stack@devstack-centos-controller devstack]$ ip netns list [stack@devstack-centos-controller devstack]$ ~~~ Can you please share the steps if you have them handy. Thanks & Regards, Vikrant Aggarwal On Tue, Sep 19, 2017 at 1:51 AM, Russell Bryant <[email protected]> wrote: > On Fri, Sep 15, 2017 at 12:45 AM, Vikrant Aggarwal > <[email protected]> wrote: > > Hi Folks, > > > > With ovs as mechanism driver in neutron, I used network namespaces often > to > > troubleshoot the network related issue especially with instances which > are > > not having floating ip attached to them. It's easy to take ssh session to > > instances without floating ip from network namespace and then take the > > tcpdump at various hops to troubleshoot the issue. > > > > With ovn, hops are reduced as all decisions are made using openflows but > > it's difficult to troubleshoot the issue. > > > > Do we have any mechanism to take the ssh session to instance with only > > private ip in case of ovn and take tcpdump on logical switches and ports? > > If you're using the latest Neutron integration (networking-ovn), we > now create namespaces for OpenStack metadata API integration. You can > use those namespaces like you did before. > > The other option would be to manually create a Neutron port, and then > manually create an interface in a namespace for that Neutron port. I > can send instructions if needed ... > > -- > Russell Bryant >
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