Open Stack

Hi Satish,

The one to use should be https://opendev.org/x/ovn-bgp-agent. The one on my
personal github repo was the initial PoC for it. But the opendev one is the
upstream effort to develop it, and is the one being maintained/updated.

Looking at your second logs, it seems you are missing FRR (and its shell,
vtysh) in the node.

Actually, thinking about this:
"Unexpected error while running command.
Command: /usr/bin/vtysh --vty_socket /run/frr/ -c copy /tmp/tmpiz5s_wvs
running-config"

The ovn-bgp-agent has been developed with "deploying on containers" in
mind, meaning it is assuming there is a frr container running, and the
container running the agent is trying to connect to the same socket so that
it can run the vtysh commands. Perhaps in your case the frr socket is in a
different location than /run/frr/

On Fri, Jul 22, 2022 at 6:27 AM Satish Patel <satish.txt at gmail.com> wrote:

> Folks,
>
> I am trying to create lab of of ovn-bgp-agent using this blog
> https://ltomasbo.wordpress.com/2021/02/04/ovn-bgp-agent-testing-setup/
>
> So far everything went well but I'm stuck at the bgp-agent
> installation and I encounter following error when running bgp-agent.
> Any suggestions?
>
> root at rack-1-host-2:/home/vagrant/bgp-agent# bgp-agent
> 2022-07-22 04:02:39.123 111551 INFO bgp_agent.config [-] Logging enabled!
> 2022-07-22 04:02:39.475 111551 CRITICAL bgp-agent [-] Unhandled error:
> AssertionError
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent Traceback (most recent call
> last):
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/bin/bgp-agent", line 10, in <module>
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     sys.exit(start())
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/bgp_agent/agent.py", line 76, in
> start
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     bgp_agent_launcher =
> service.launch(config.CONF, BGPAgent())
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/bgp_agent/agent.py", line 44, in
> __init__
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     self.agent_driver =
> driver_api.AgentDriverBase.get_instance(
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/bgp_agent/platform/driver_api.py",
> line 25, in get_instance
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     agent_driver =
> stevedore_driver.DriverManager(
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/stevedore/driver.py", line 54, in
> __init__
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     super(DriverManager,
> self).__init__(
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/stevedore/named.py", line 78, in
> __init__
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     extensions =
> self._load_plugins(invoke_on_load,
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/stevedore/extension.py", line 221,
> in _load_plugins
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     ext =
> self._load_one_plugin(ep,
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/stevedore/named.py", line 156, in
> _load_one_plugin
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     return
> super(NamedExtensionManager, self)._load_one_plugin(
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/stevedore/extension.py", line 257,
> in _load_one_plugin
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     obj =
> plugin(*invoke_args, **invoke_kwds)
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/bgp_agent/platform/osp/ovn_bgp_driver.py",
> line 64, in __init__
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     self._sb_idl =
> ovn.OvnSbIdl(
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/bgp_agent/platform/osp/utils/ovn.py",
> line 62, in __init__
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     super(OvnSbIdl,
> self).__init__(
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/bgp_agent/platform/osp/utils/ovn.py",
> line 31, in __init__
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     super(OvnIdl,
> self).__init__(remote, schema)
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/ovs/db/idl.py", line 283, in
> __init__
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     schema =
> schema_helper.get_idl_schema()
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/ovs/db/idl.py", line 2323, in
> get_idl_schema
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent
> self._keep_table_columns(schema, table, columns))
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent   File
> "/usr/local/lib/python3.8/dist-packages/ovs/db/idl.py", line 2330, in
> _keep_table_columns
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent     assert table_name in
> schema.tables
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent AssertionError
> 2022-07-22 04:02:39.475 111551 ERROR bgp-agent
>
>
>
>
> After googling I found one more agent at
> https://opendev.org/x/ovn-bgp-agent and its also throwing an error. Which
> agent should I be using?
>
> root at rack-1-host-2:~# ovn-bgp-agent
> 2022-07-22 04:04:36.780 111761 INFO ovn_bgp_agent.config [-] Logging
> enabled!
> 2022-07-22 04:04:37.247 111761 INFO ovn_bgp_agent.agent [-] Service
> 'BGPAgent' stopped
> 2022-07-22 04:04:37.248 111761 INFO ovn_bgp_agent.agent [-] Service
> 'BGPAgent' starting
> 2022-07-22 04:04:37.248 111761 INFO
> ovn_bgp_agent.drivers.openstack.utils.frr [-] Add VRF leak for VRF
> ovn-bgp-vrf on router bgp 64999
> 2022-07-22 04:04:37.248 111761 INFO oslo.privsep.daemon [-] Running
> privsep helper: ['sudo', 'privsep-helper', '--privsep_context',
> 'ovn_bgp_agent.privileged.vtysh_cmd', '--privsep_sock_path',
> '/tmp/tmp4cie9eiz/privsep.sock']
> 2022-07-22 04:04:37.687 111761 INFO oslo.privsep.daemon [-] Spawned new
> privsep daemon via rootwrap
> 2022-07-22 04:04:37.598 111769 INFO oslo.privsep.daemon [-] privsep daemon
> starting
> 2022-07-22 04:04:37.613 111769 INFO oslo.privsep.daemon [-] privsep
> process running with uid/gid: 0/0
> 2022-07-22 04:04:37.617 111769 INFO oslo.privsep.daemon [-] privsep
> process running with capabilities (eff/prm/inh):
> CAP_NET_ADMIN|CAP_SYS_ADMIN/CAP_NET_ADMIN|CAP_SYS_ADMIN/none
> 2022-07-22 04:04:37.617 111769 INFO oslo.privsep.daemon [-] privsep daemon
> running as pid 111769
> 2022-07-22 04:04:37.987 111769 ERROR ovn_bgp_agent.privileged.vtysh [-]
> Unable to execute vtysh with ['/usr/bin/vtysh', '--vty_socket',
> '/run/frr/', '-c', 'copy /tmp/tmpiz5s_wvs running-config']. Exception:
> Unexpected error while running command.
> Command: /usr/bin/vtysh --vty_socket /run/frr/ -c copy /tmp/tmpiz5s_wvs
> running-config
> Exit code: 1
> Stdout: '% Unknown command: copy /tmp/tmpiz5s_wvs running-config\n'
> Stderr: ''
> Traceback (most recent call last):
>   File
> "/usr/local/lib/python3.8/dist-packages/ovn_bgp_agent/privileged/vtysh.py",
> line 30, in run_vtysh_config
>     return processutils.execute(*full_args)
>   File
> "/usr/local/lib/python3.8/dist-packages/oslo_concurrency/processutils.py",
> line 438, in execute
>     raise ProcessExecutionError(exit_code=_returncode,
> oslo_concurrency.processutils.ProcessExecutionError: Unexpected error
> while running command.
> Command: /usr/bin/vtysh --vty_socket /run/frr/ -c copy /tmp/tmpiz5s_wvs
> running-config
> Exit code: 1
> Stdout: '% Unknown command: copy /tmp/tmpiz5s_wvs running-config\n'
> Stderr: ''
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service [-] Error
> starting thread.: oslo_concurrency.processutils.ProcessExecutionError:
> Unexpected error while running command.
> Command: /usr/bin/vtysh --vty_socket /run/frr/ -c copy /tmp/tmpiz5s_wvs
> running-config
> Exit code: 1
> Stdout: '% Unknown command: copy /tmp/tmpiz5s_wvs running-config\n'
> Stderr: ''
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service Traceback (most
> recent call last):
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service   File
> "/usr/local/lib/python3.8/dist-packages/oslo_service/service.py", line 806,
> in run_service
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service
> service.start()
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service   File
> "/usr/local/lib/python3.8/dist-packages/ovn_bgp_agent/agent.py", line 50,
> in start
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service
> self.agent_driver.start()
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service   File
> "/usr/local/lib/python3.8/dist-packages/ovn_bgp_agent/drivers/openstack/ovn_bgp_driver.py",
> line 73, in start
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service
> frr.vrf_leak(constants.OVN_BGP_VRF, CONF.bgp_AS, CONF.bgp_router_id)
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service   File
> "/usr/local/lib/python3.8/dist-packages/ovn_bgp_agent/drivers/openstack/utils/frr.py",
> line 110, in vrf_leak
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service
> _run_vtysh_config_with_tempfile(vrf_config)
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service   File
> "/usr/local/lib/python3.8/dist-packages/ovn_bgp_agent/drivers/openstack/utils/frr.py",
> line 93, in _run_vtysh_config_with_tempfile
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service
> ovn_bgp_agent.privileged.vtysh.run_vtysh_config(f.name)
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service   File
> "/usr/local/lib/python3.8/dist-packages/oslo_privsep/priv_context.py", line
> 271, in _wrap
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service     return
> self.channel.remote_call(name, args, kwargs,
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service   File
> "/usr/local/lib/python3.8/dist-packages/oslo_privsep/daemon.py", line 215,
> in remote_call
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service     raise
> exc_type(*result[2])
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service
> oslo_concurrency.processutils.ProcessExecutionError: Unexpected error while
> running command.
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service Command:
> /usr/bin/vtysh --vty_socket /run/frr/ -c copy /tmp/tmpiz5s_wvs
> running-config
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service Exit code: 1
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service Stdout: '%
> Unknown command: copy /tmp/tmpiz5s_wvs running-config\n'
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service Stderr: ''
> 2022-07-22 04:04:37.990 111761 ERROR oslo_service.service
> 2022-07-22 04:04:37.993 111761 INFO ovn_bgp_agent.agent [-] Service
> 'BGPAgent' stopping
> 2022-07-22 04:04:37.994 111761 INFO ovn_bgp_agent.agent [-] Service
> 'BGPAgent' stopped
>


-- 
LUIS TOMÁS BOLÍVAR
Principal Software Engineer
Red Hat
Madrid, Spain
ltomasbo at redhat.com
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