Hello Lokendra:

Did you check the version of the ovn-controller service in the compute nodes and the ovn services in the controller nodes? The services should be in sync.

What is the "openstack network agent list" output? Do you see the OVN controller, OVN gateways and OVN metadata entries corresponding to the compute and controller nodes you have? And did you check the sanity of your OVN SB database? What is the list of "Chassis" and "Chassis_Private" registers? Each "Chassis_Private" register must have a "Chassis" register associated.

Regards.

On Wed, May 17, 2023 at 6:14 PM Lokendra Rathour <lokendrarathour@gmail.com> wrote:

Hi Swogat,

Thanks for the inputs, it was showing a similar issue but somehow the issue is not getting resolved.

we are trying to explore more around it. 

getting the error in 

ovn-metadata-agent.log

Cannot find Chassis_Private with name=f80799b9-0cf4-4413-bb4b-e36278c73f6c

detailed:

2023-05-17 19:26:31.984 45317 INFO oslo.privsep.daemon [-] privsep daemon running as pid 45317
2023-05-17 19:26:32.712 44735 ERROR ovsdbapp.backend.ovs_idl.transaction [-] Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/connection.py", line 131, in run
    txn.results.put(txn.do_commit())
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/transaction.py", line 93, in do_commit
    command.run_idl(txn)
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/command.py", line 172, in run_idl
    record = self.api.lookup(self.table, self.record)
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/__init__.py", line 208, in lookup
    return self._lookup(table, record)
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/__init__.py", line 268, in _lookup
    row = idlutils.row_by_value(self, rl.table, rl.column, record)
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/idlutils.py", line 114, in row_by_value
    raise RowNotFound(table=table, col=column, match=match)
ovsdbapp.backend.ovs_idl.idlutils.RowNotFound: Cannot find Chassis_Private with name=f80799b9-0cf4-4413-bb4b-e36278c73f6c

2023-05-17 19:26:32.713 44735 ERROR ovsdbapp.backend.ovs_idl.command [-] Error executing command (DbAddCommand): ovsdbapp.backend.ovs_idl.idlutils.RowNotFound: Cannot find Chassis_Private with name=f80799b9-0cf4-4413-bb4b-e36278c73f6c
2023-05-17 19:26:32.713 44735 ERROR ovsdbapp.backend.ovs_idl.command Traceback (most recent call last):
2023-05-17 19:26:32.713 44735 ERROR ovsdbapp.backend.ovs_idl.command   File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/command.py", line 42, in execute

waiting for your always helpful inputs.

On Tue, May 16, 2023 at 10:47 PM Swogat Pradhan <swogatpradhan22@gmail.com> wrote:

Hi 

I am not sure if this will help, but i faced something similar.

You might need to check the ovn database entries.

http://www.jimmdenton.com/neutron-ovn-private-chassis/

Or maybe try restarting the ovn service from pcs, sometimes issue comes up when ovn doesn't sync up.

Again m not sure if this will be of any help to you.

With regards,

Swogat Pradhan

On Tue, 16 May 2023, 10:41 pm Lokendra Rathour, <lokendrarathour@gmail.com> wrote:

Hi All,

Was trying to create OpenStack VM in OpenStack wallaby release, not able to create VM, it is failing because of Port not getting created. 

The error that we are getting:

nova-compute.log:

2023-05-16 18:15:35.495 7 INFO nova.compute.provider_config [req-faaf38e7-b5ee-43d1-9303-d508285f5ab7 - - - - -] No provider configs found in /etc/nova/provider_config. If files are present, ensure the Nova process has access.
2023-05-16 18:15:35.549 7 ERROR nova.cmd.common [req-8842f11c-fe5a-4ad3-92ea-a6898f482bf0 - - - - -] No db access allowed in nova-compute:   File "/usr/bin/nova-compute", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.6/site-packages/nova/cmd/compute.py", line 59, in main
    topic=compute_rpcapi.RPC_TOPIC)
  File "/usr/lib/python3.6/site-packages/nova/service.py", line 264, in create
    utils.raise_if_old_compute()
  File "/usr/lib/python3.6/site-packages/nova/utils.py", line 1068, in raise_if_old_compute
    ctxt, ['nova-compute'])
  File "/usr/lib/python3.6/site-packages/nova/objects/service.py", line 563, in get_minimum_version_all_cells
    binaries)
  File "/usr/lib/python3.6/site-packages/nova/context.py", line 544, in scatter_gather_all_cells
    fn, *args, **kwargs)
  File "/usr/lib/python3.6/site-packages/nova/context.py", line 432, in scatter_gather_cells
    with target_cell(context, cell_mapping) as cctxt:
  File "/usr/lib64/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)

neutron/ovn-metadata-agent.log

2023-05-16 22:33:41.871 45204 ERROR ovsdbapp.backend.ovs_idl.command ovsdbapp.backend.ovs_idl.idlutils.RowNotFound: Cannot find Chassis_Private with name=b6e6f0d3-40c6-4d4e-8ef6-c935fa027bd2
2023-05-16 22:33:41.871 45204 ERROR ovsdbapp.backend.ovs_idl.command
2023-05-16 22:36:41.876 45204 ERROR ovsdbapp.backend.ovs_idl.transaction [-] Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/connection.py", line 131, in run
    txn.results.put(txn.do_commit())
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/transaction.py", line 93, in do_commit
    command.run_idl(txn)
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/command.py", line 172, in run_idl
    record = self.api.lookup(self.table, self.record)
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/__init__.py", line 208, in lookup
    return self._lookup(table, record)
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/__init__.py", line 268, in _lookup
    row = idlutils.row_by_value(self, rl.table, rl.column, record)
  File "/usr/lib/python3.6/site-packages/ovsdbapp/backend/ovs_idl/idlutils.py", line 114, in row_by_value
    raise RowNotFound(table=table, col=column, match=match)
ovsdbapp.backend.ovs_idl.idlutils.RowNotFound: Cannot find Chassis_Private with name=b6e6f0d3-40c6-4d4e-8ef6-c935fa027bd2

any input to help get this issue fixed would be of great help.

thanks

--

~ Lokendra

skype: lokendrarathour

--

~ Lokendra

skype: lokendrarathour