openstack
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neutron
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[Doc] packet rate limit user workflow and notes 

Adds some notes and CLI examples for users to use the
packet rate limit to a port.

Change-Id: I7ad81d4a9028d88251c9dcfe07969dd2dd398592
This commit is contained in:
LIU Yulong 2022-02-10 15:42:33 +08:00 committed by Miguel Lavalle
parent bcdabad1c8
commit 76d0839db8
2 changed files with 61 additions and 0 deletions
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4
devstack/ovn-local.conf.sample
View File

@ -167,6 +167,10 @@ ENABLE_CHASSIS_AS_GW=True
# script, please don't modify or remove, keep it before any post-config items
#EXTRA_CONFIG
[[post-config|$NEUTRON_CONF]]
[DEFAULT]
dns_domain = elvira.org
[[post-config|$NOVA_CONF]]
[scheduler]
discover_hosts_in_cells_interval = 2

57
doc/source/admin/config-qos.rst
View File

@ -34,6 +34,8 @@ QoS supported rule types are now available as ``VALID_RULE_TYPES`` in `QoS rule
* bandwidth_limit: Bandwidth limitations on networks, ports or floating IPs.
* packet_rate_limit: Packet rate limitations on certain types of traffic.
* dscp_marking: Marking network traffic with a DSCP value.
* minimum_bandwidth: Minimum bandwidth constraints on certain types of traffic.
@ -56,6 +58,7 @@ traffic directions (from the VM point of view).
Rule \\ back end Open vSwitch SR-IOV Linux bridge OVN
==================== ============================= ======================= =================== ===================
Bandwidth limit Egress \\ Ingress Egress (1) Egress \\ Ingress Egress \\ Ingress
Packet rate limit Egress \\ Ingress - - -
Minimum bandwidth Egress \\ Ingress (2) Egress \\ Ingress (2) - -
Minimum packet rate - - - -
DSCP marking Egress - Egress Egress
@ -632,6 +635,60 @@ be used.
| shared | False |
+-------------------+--------------------------------------+
Create qos policy with packet rate limit rules:
.. code-block:: console
$ openstack network qos policy create pps-limiter
+-------------+--------------------------------------+
| Field | Value |
+-------------+--------------------------------------+
| description | |
| id | 97f0ac37-7dd6-4579-8359-3bef0751a505 |
| is_default | False |
| name | pps-limiter |
| project_id | 1d70739f831b421fb38a27adb368fc17 |
| rules | [] |
| shared | False |
| tags | [] |
+-------------+--------------------------------------+
$ openstack network qos rule create --max-kpps 1000 --max-burst-kpps 100 --ingress --type packet-rate-limit pps-limiter
+----------------+--------------------------------------+
| Field | Value |
+----------------+--------------------------------------+
| direction | ingress |
| id | 4a1cb166-9661-48d7-bddb-00b7d75846cd |
| max_burst_kpps | 100 |
| max_kpps | 1000 |
| name | None |
| project_id | |
+----------------+--------------------------------------+
$ openstack network qos rule create --max-kpps 1000 --max-burst-kpps 100 --egress --type packet-rate-limit pps-limiter
+----------------+--------------------------------------+
| Field | Value |
+----------------+--------------------------------------+
| direction | egress |
| id | 6abd67f7-0bde-4ad3-ac54-b0a6103b0449 |
| max_burst_kpps | 100 |
| max_kpps | 1000 |
| name | None |
| project_id | |
+----------------+--------------------------------------+
.. note:: The unit for the rate and burst is kilo (1000) packets per second.
Now apply the packet rate limit QoS policy to a Port:
.. code-block:: console
$ openstack port set --qos-policy pps-limiter 251948bd-08e4-4569-a47f-ecbc1fd4af4d
.. note:: Packet rate limit is only supported by the ml2 ovs driver. And it leverages
the meter actions of the ovs kernel datapath or the userspace ovs dpdk datapath.
The meter action is only supported when the datapath is in user mode
or ovs kernel datapath with kernerl version >= 4.15.
Administrator enforcement
-------------------------