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Message #80792
[Bug 1853840] [NEW] Neutron fails to create bandwidth providers if CONF.host is set
Public bug reported:
If neutron is configured to support qos minimum bandwidth policy rules
and the [DEFAULT]/host config option is set for both nova-compute and
neutron (sriov / ovs) agents on a given compute host then neutron fails
to find the compute host root resource provider and therefore fails to
create the agent providers and the device providers.
Reproduction:
* deploy an all-in-one devstack with the minimum bandwidth configuration [1] and set [DEFAULT]/host for nova-compute and neutron agent to something else than the hostname of the compute host.
* start up the nova and neutron services
* check what resource providers are created during the startup
Expected:
stack@aio:~/devstack$ openstack resource provider list
+--------------------------------------+--------------------------------+------------+
| uuid | name | generation |
+--------------------------------------+--------------------------------+------------+
| 737d9a03-3f8d-4740-9b3b-933fac0dded9 | aio | 2 |
| 31b21568-8d05-5d9c-a045-6956ac62790a | aio:Open vSwitch agent | 0 |
| 1110cf59-cabf-526c-bacc-08baabbac692 | aio:Open vSwitch agent:br-test | 2 |
| 9734f92c-16da-585b-a19c-e3d4f30302fe | aio:NIC Switch agent | 0 |
+--------------------------------------+--------------------------------+------------+
Actual:
stack@aio:~/devstack$ openstack resource provider list
+--------------------------------------+--------------------------------+------------+
| uuid | name | generation |
+--------------------------------------+--------------------------------+------------+
| 737d9a03-3f8d-4740-9b3b-933fac0dded9 | aio | 2 |
+--------------------------------------+--------------------------------+------------+
There is the following log visible in the neturon-server:
Nov 22 11:39:34 aio neutron-server[14589]: DEBUG neutron.services.placement_report.plugin [None req-59a8b1b9-771b-4a38-9270-ea9fabccebb4 None None] placement: syncing state for agent type Open vSwitch agent on host not-the-compute-hostname {{(pid=14612) handle_placement_config /opt/stack/neutron/neutron/services/placement_report/plugin.py:197}}
Nov 22 11:39:34 aio neutron-server[14589]: WARNING neutron.services.placement_report.plugin [None req-59a8b1b9-771b-4a38-9270-ea9fabccebb4 None None] Synchronization of resources of agent type Open vSwitch agent at host not-the-compute-hostname to placement failed.: IndexError: list index out of range
Precieved severity:
* Medium, workaround exists: do not try to use qos configuration at the same time when the [DEFAULT]/host needs to be configured to other than the hostname of ht compute host.
Version: neutron from master 418be00155a9fa93c8f63bd1d847d2fb3410228b
ML post about the problem and discussion about possible solution:
http://lists.openstack.org/pipermail/openstack-
discuss/2019-November/011044.html
[1] https://docs.openstack.org/neutron/latest/admin/config-qos-min-
bw.html
** Affects: neutron
Importance: Undecided
Assignee: Bence Romsics (bence-romsics)
Status: New
** Tags: placement qos
** Description changed:
If neutron is configured to support qos minimum bandwidth policy rules
and the [DEFAULT]/host config option is set for both nova-compute and
neutron (sriov / ovs) agents on a given compute host then neutron fails
to find the compute host root resource provider and therefore fails to
create the agent providers and the device providers.
-
Reproduction:
* deploy an all-in-one devstack with the minimum bandwidth configuration [1] and set [DEFAULT]/host for nova-compute and neutron agent to something else than the hostname of the compute host.
* start up the nova and neutron services
* check what resource providers are created during the startup
Expected:
stack@aio:~/devstack$ openstack resource provider list
+--------------------------------------+--------------------------------+------------+
| uuid | name | generation |
+--------------------------------------+--------------------------------+------------+
| 737d9a03-3f8d-4740-9b3b-933fac0dded9 | aio | 2 |
| 31b21568-8d05-5d9c-a045-6956ac62790a | aio:Open vSwitch agent | 0 |
| 1110cf59-cabf-526c-bacc-08baabbac692 | aio:Open vSwitch agent:br-test | 2 |
| 9734f92c-16da-585b-a19c-e3d4f30302fe | aio:NIC Switch agent | 0 |
+--------------------------------------+--------------------------------+------------+
Actual:
stack@aio:~/devstack$ openstack resource provider list
+--------------------------------------+--------------------------------+------------+
| uuid | name | generation |
+--------------------------------------+--------------------------------+------------+
| 737d9a03-3f8d-4740-9b3b-933fac0dded9 | aio | 2 |
+--------------------------------------+--------------------------------+------------+
There is the following log visible in the neturon-server:
Nov 22 11:39:34 aio neutron-server[14589]: DEBUG neutron.services.placement_report.plugin [None req-59a8b1b9-771b-4a38-9270-ea9fabccebb4 None None] placement: syncing state for agent type Open vSwitch agent on host not-the-compute-hostname {{(pid=14612) handle_placement_config /opt/stack/neutron/neutron/services/placement_report/plugin.py:197}}
Nov 22 11:39:34 aio neutron-server[14589]: WARNING neutron.services.placement_report.plugin [None req-59a8b1b9-771b-4a38-9270-ea9fabccebb4 None None] Synchronization of resources of agent type Open vSwitch agent at host not-the-compute-hostname to placement failed.: IndexError: list index out of range
Precieved severity:
* Medium, workaround exists: do not try to use qos configuration at the same time when the [DEFAULT]/host needs to be configured to other than the hostname of ht compute host.
+ Version: neutron from master 418be00155a9fa93c8f63bd1d847d2fb3410228b
+
[1] https://docs.openstack.org/neutron/latest/admin/config-qos-min-
bw.html
** Tags added: placement qos
** Description changed:
If neutron is configured to support qos minimum bandwidth policy rules
and the [DEFAULT]/host config option is set for both nova-compute and
neutron (sriov / ovs) agents on a given compute host then neutron fails
to find the compute host root resource provider and therefore fails to
create the agent providers and the device providers.
Reproduction:
* deploy an all-in-one devstack with the minimum bandwidth configuration [1] and set [DEFAULT]/host for nova-compute and neutron agent to something else than the hostname of the compute host.
* start up the nova and neutron services
* check what resource providers are created during the startup
Expected:
stack@aio:~/devstack$ openstack resource provider list
+--------------------------------------+--------------------------------+------------+
| uuid | name | generation |
+--------------------------------------+--------------------------------+------------+
| 737d9a03-3f8d-4740-9b3b-933fac0dded9 | aio | 2 |
| 31b21568-8d05-5d9c-a045-6956ac62790a | aio:Open vSwitch agent | 0 |
| 1110cf59-cabf-526c-bacc-08baabbac692 | aio:Open vSwitch agent:br-test | 2 |
| 9734f92c-16da-585b-a19c-e3d4f30302fe | aio:NIC Switch agent | 0 |
+--------------------------------------+--------------------------------+------------+
Actual:
stack@aio:~/devstack$ openstack resource provider list
+--------------------------------------+--------------------------------+------------+
| uuid | name | generation |
+--------------------------------------+--------------------------------+------------+
| 737d9a03-3f8d-4740-9b3b-933fac0dded9 | aio | 2 |
+--------------------------------------+--------------------------------+------------+
There is the following log visible in the neturon-server:
Nov 22 11:39:34 aio neutron-server[14589]: DEBUG neutron.services.placement_report.plugin [None req-59a8b1b9-771b-4a38-9270-ea9fabccebb4 None None] placement: syncing state for agent type Open vSwitch agent on host not-the-compute-hostname {{(pid=14612) handle_placement_config /opt/stack/neutron/neutron/services/placement_report/plugin.py:197}}
Nov 22 11:39:34 aio neutron-server[14589]: WARNING neutron.services.placement_report.plugin [None req-59a8b1b9-771b-4a38-9270-ea9fabccebb4 None None] Synchronization of resources of agent type Open vSwitch agent at host not-the-compute-hostname to placement failed.: IndexError: list index out of range
Precieved severity:
* Medium, workaround exists: do not try to use qos configuration at the same time when the [DEFAULT]/host needs to be configured to other than the hostname of ht compute host.
Version: neutron from master 418be00155a9fa93c8f63bd1d847d2fb3410228b
+ ML post about the problem and discussion about possible solution:
+ http://lists.openstack.org/pipermail/openstack-
+ discuss/2019-November/011044.html
+
[1] https://docs.openstack.org/neutron/latest/admin/config-qos-min-
bw.html
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https://bugs.launchpad.net/bugs/1853840
Title:
Neutron fails to create bandwidth providers if CONF.host is set
Status in neutron:
New
Bug description:
If neutron is configured to support qos minimum bandwidth policy rules
and the [DEFAULT]/host config option is set for both nova-compute and
neutron (sriov / ovs) agents on a given compute host then neutron
fails to find the compute host root resource provider and therefore
fails to create the agent providers and the device providers.
Reproduction:
* deploy an all-in-one devstack with the minimum bandwidth configuration [1] and set [DEFAULT]/host for nova-compute and neutron agent to something else than the hostname of the compute host.
* start up the nova and neutron services
* check what resource providers are created during the startup
Expected:
stack@aio:~/devstack$ openstack resource provider list
+--------------------------------------+--------------------------------+------------+
| uuid | name | generation |
+--------------------------------------+--------------------------------+------------+
| 737d9a03-3f8d-4740-9b3b-933fac0dded9 | aio | 2 |
| 31b21568-8d05-5d9c-a045-6956ac62790a | aio:Open vSwitch agent | 0 |
| 1110cf59-cabf-526c-bacc-08baabbac692 | aio:Open vSwitch agent:br-test | 2 |
| 9734f92c-16da-585b-a19c-e3d4f30302fe | aio:NIC Switch agent | 0 |
+--------------------------------------+--------------------------------+------------+
Actual:
stack@aio:~/devstack$ openstack resource provider list
+--------------------------------------+--------------------------------+------------+
| uuid | name | generation |
+--------------------------------------+--------------------------------+------------+
| 737d9a03-3f8d-4740-9b3b-933fac0dded9 | aio | 2 |
+--------------------------------------+--------------------------------+------------+
There is the following log visible in the neturon-server:
Nov 22 11:39:34 aio neutron-server[14589]: DEBUG neutron.services.placement_report.plugin [None req-59a8b1b9-771b-4a38-9270-ea9fabccebb4 None None] placement: syncing state for agent type Open vSwitch agent on host not-the-compute-hostname {{(pid=14612) handle_placement_config /opt/stack/neutron/neutron/services/placement_report/plugin.py:197}}
Nov 22 11:39:34 aio neutron-server[14589]: WARNING neutron.services.placement_report.plugin [None req-59a8b1b9-771b-4a38-9270-ea9fabccebb4 None None] Synchronization of resources of agent type Open vSwitch agent at host not-the-compute-hostname to placement failed.: IndexError: list index out of range
Precieved severity:
* Medium, workaround exists: do not try to use qos configuration at the same time when the [DEFAULT]/host needs to be configured to other than the hostname of ht compute host.
Version: neutron from master 418be00155a9fa93c8f63bd1d847d2fb3410228b
ML post about the problem and discussion about possible solution:
http://lists.openstack.org/pipermail/openstack-
discuss/2019-November/011044.html
[1] https://docs.openstack.org/neutron/latest/admin/config-qos-min-
bw.html
To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1853840/+subscriptions
Follow ups
