OVN octavia backend unsuported algorithm

[mathgonzalezz]

Hi,

After the ovn implemetation i see some errors about a not supported algorithm that prevents to expose a service using octavia:

2024-04-05 21:04:49.759 22 INFO octavia.api.drivers.utils [None req-52d882c9-5817-4f83-bb50-65438b0135a7 - 01adb0aae1b94bd493311c94456643a4 - - default default] Provider 'ovn' raised an unsupported option error: OVN provider does not support ROUND_ROBIN algorithm
2024-04-05 21:04:49.764 22 ERROR wsme.api [None req-52d882c9-5817-4f83-bb50-65438b0135a7 - 01adb0aae1b94bd493311c94456643a4 - - default default] Server-side error: "Provider 'ovn' does not support a requested option: OVN provider does not support ROUND_ROBIN algorithm". Detail:
Traceback (most recent call last):

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/octavia/api/drivers/utils.py", line 52, in call_provider
    return driver_method(*args, **kwargs)

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/ovn_octavia_provider/driver.py", line 110, in loadbalancer_create
    self.pool_create(pool)

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/ovn_octavia_provider/driver.py", line 141, in pool_create
    self._check_for_supported_algorithms(pool.lb_algorithm)

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/ovn_octavia_provider/driver.py", line 67, in _check_for_supported_algorithms
    raise driver_exceptions.UnsupportedOptionError(

octavia_lib.api.drivers.exceptions.UnsupportedOptionError: OVN provider does not support ROUND_ROBIN algorithm


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/wsmeext/pecan.py", line 82, in callfunction
    result = f(self, *args, **kwargs)

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/octavia/api/v2/controllers/load_balancer.py", line 577, in post
    lock_session.rollback()

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/oslo_utils/excutils.py", line 227, in __exit__
    self.force_reraise()

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/oslo_utils/excutils.py", line 200, in force_reraise
    raise self.value

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/octavia/api/v2/controllers/load_balancer.py", line 567, in post
    driver_utils.call_provider(

  File "/var/lib/kolla/venv/lib64/python3.9/site-packages/octavia/api/drivers/utils.py", line 74, in call_provider
    raise exceptions.ProviderUnsupportedOptionError(

octavia.common.exceptions.ProviderUnsupportedOptionError: Provider 'ovn' does not support a requested option: OVN provider does not support ROUND_ROBIN algorithm
: octavia.common.exceptions.ProviderUnsupportedOptionError: Provider 'ovn' does not support a requested option: OVN provider does not support ROUND_ROBIN algorithm

This is the note for the ovn octavia backend doc:

Limitations of the OVN Provider Driver:
Only the SOURCE_IP_PORT load balancing algorithm is supported, others like ROUND_ROBIN and LEAST_CONNECTIONS are not currently supported.

Thanks!

[mnaser]

I pushed a PR for this, if you're able to test it, that would be really nice... since we use the Amphora provider for our CI, not OVN.

[mathgonzalezz]

I pushed a PR for this, if you're able to test it, that would be really nice... since we use the Amphora provider for our CI, not OVN.

Hi!

Yes i can test it, i need only to update the python package right? because im using kolla ansible and magnun-api is containerized. But yes i go to test it and share results.

Thanks!

[mathgonzalezz]

i try to install but i dont find the 0.17 version:

ERROR: Could not find a version that satisfies the requirement magnum-cluster-api==0.17 (from versions: 0.1.0, 0.1.1, 0.1.2, 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.2.5, 0.2.6, 0.2.7, 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.4.0, 0.4.1, 0.4.2, 0.5.0, 0.5.1, 0.5.2, 0.5.3, 0.5.4, 0.6.0, 0.7.0, 0.7.1, 0.7.2, 0.8.0, 0.8.1, 0.9.0, 0.9.1, 0.10.0, 0.11.0, 0.11.1, 0.11.2, 0.12.0, 0.12.1, 0.13.0, 0.13.1, 0.13.2, 0.13.3, 0.13.4, 0.14.0, 0.14.1, 0.14.2, 0.15.0, 0.15.1, 0.16.0)
ERROR: No matching distribution found for magnum-cluster-api==0.17

[mnaser]

@mathgonzalezz You will need to install directly from Git, 0.17.0 has not been released yet.

[mathgonzlez]

@mathgonzalezz You will need to install directly from Git, 0.17.0 has not been released yet.

Hi @mnaser
Sorry for this question, but are you able to help me installing? or you have some document that i can follow?

thanks!