Hello,
I'm trying to set up metering for neutron in Pike. I tested it with a
centralized router and it works, but when I try with a distributed router it
doesn't record any usage samples. I have one compute node and one
network node
and I've created an instance with a floating ip.
openstack router show public-router2
+-------------------------+----------------------------------------------------+
| Field |
Value |
+-------------------------+----------------------------------------------------+
| admin_state_up |
UP |
| availability_zone_hints
| |
| availability_zones |
nova |
| created_at |
2018-10-05T12:07:32Z |
| description | |
| distributed |
True |
| external_gateway_info | {"network_id":
"b96473ce- |
| | 94f6-464f-a703-5285fb8ff3d3", "enable_snat":
true, |
| | "external_fixed_ips":
[{"subnet_id": |
| |
"6c08c3d9-7df1-4bec-b847-19f80b9d1764", |
| | "ip_address":
"192.168.252.102"}]} |
| flavor_id |
None |
| ha |
False |
| id |
37c1794b-58d1-4d0d-b34b-944ca411b86b |
| name |
public-router2 |
| project_id |
fe203109e67f4e39b066c9529f9fc35d |
| revision_number |
5 |
| routes | |
| status |
ACTIVE |
| tags | |
| updated_at |
2018-10-05T12:09:36Z |
+-------------------------+----------------------------------------------------+
openstack network agent list
+-----------+------------+-----------+-------------------+-------+-------+--------------+
| ID | Agent Type | Host | Availability Zone | Alive | State
| Binary |
+-----------+------------+-----------+-------------------+-------+-------+--------------+
| 14b9ea75- | L3 agent | compute1. | nova | :-) | UP | neutron-l3-a |
| 1dc1-4e37 | | localdoma | | | | gent |
| -a2b0-508 | | in | | | | |
| 3d336916d | | | | | | |
| 26139ec1- | Metering | compute1. | None | :-) | UP | neutron- |
| f4f9-4bb3 | agent | localdoma | | | | metering- |
| -aebb-c35 | | in | | | | agent |
| 3a36ed79c | | | | | | |
| 2a54971f- | DHCP agent | network1. | nova | :-) | UP | neutron- |
| 9849-4ed2 | | localdoma | | | | dhcp-agent |
| -b009-00e | | in | | | | |
| 45eb4d255 | | | | | | |
| 443c0b49- | Open | compute1. | None | :-) | UP | neutron- |
| 4484-44d2 | vSwitch | localdoma | | | | openvswitch- |
| -a704-32a | agent | in | | | | agent |
| 92ffe6982 | | | | | | |
| 5d00a219 | L3 agent | network1. | nova | :-) | UP | neutron-vpn- |
| -abce- | | localdoma | | | | agent |
| 48ca- | | in | | | | |
| ba1e-d962 | | | | | | |
| 01bd7de3 | | | | | | |
| bc3458b4 | Open | network1. | None | :-) | UP | neutron- |
| -250e- | vSwitch | localdoma | | | | openvswitch- |
| 4adf-90e0 | agent | in | | | | agent |
| -110a1a7f | | | | | | |
| 6ccb | | | | | | |
| c29f9da8- | Metering | network1. | None | :-) | UP | neutron- |
| ca58-4a11 | agent | localdoma | | | | metering- |
| -b500-a25 | | in | | | | agent |
| 3f820808e | | | | | | |
| cdce667d- | Metadata | network1. | None | :-) | UP | neutron- |
| faa4 | agent | localdoma | | | | metadata- |
| -49ed- | | in | | | | agent |
| 83ee-e0e5 | | | | | | |
| a352d482 | | | | | | |
| cf5ae104- | Metadata | compute1. | None | :-) | UP | neutron- |
| 49d7-4c85 | agent | localdoma | | | | metadata- |
| -a252-cc5 | | in | | | | agent |
| 9a9a12789 | | | | | | |
+-----------+------------+-----------+-------------------+-------+-------+--------------+
If I check the node on which my distributed router is running it tells
me that
it's running on the network node:
neutron l3-agent-list-hosting-router 37c1794b-58d1-4d0d-b34b-944ca411b86b
+--------------------------------------+----------------------+----------------+-------+----------+
| id | host |
admin_state_up | alive | ha_state |
+--------------------------------------+----------------------+----------------+-------+----------+
| 5d00a219-abce-48ca-ba1e-d96201bd7de3 | network1.localdomain |
True | :-) | |
+--------------------------------------+----------------------+----------------+-------+----------+
If I check the iptable rules for the router on the compute and network
nodes by running:
ip netns exec qrouter-37c1794b-58d1-4d0d-b34b-944ca411b86b iptables -nv -L
I see that compute1 records the traffic while network1 doesn't. Also, I
did some
debugging and found out that the metering agent on compute1 receives an
empty
list of routers when querying the routers that it should monitor.
Source:
https://github.com/openstack/neutron/blob/stable/pike/neutron/services/metering/agents/metering_agent.py#L177-L189
https://github.com/openstack/neutron/blob/stable/pike/neutron/db/metering/metering_rpc.py#L33-L57
I think this is because the router is running on network1. Why is it
running on
network1 and why does it seem that the l3 agent on compute1 does the actual
routing?
Thanks,
Alex
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