Manage Networking service quotas¶
A quota limits the number of available resources. A default quota might be enforced for all projects. When you try to create more resources than the quota allows, an error occurs:
$ openstack network create test_net
Error while executing command: ConflictException: 409, Quota exceeded for resources: ['network'].
Per-project quota configuration is also supported by the quota extension API. See Configure per-project quotas for details.
Basic quota configuration¶
In the Networking default quota mechanism, all projects have the same quota values, such as the number of resources that a project can create.
The quota value is defined in the OpenStack Networking
/etc/neutron/neutron.conf configuration file. This example shows the
default quota values:
[quotas]
# Default number of resources allowed per project. A negative value means
# unlimited. (integer value)
#default_quota = -1
# Number of networks allowed per project. A negative value means unlimited.
# (integer value)
quota_network = 100
# Number of subnets allowed per project, A negative value means unlimited.
# (integer value)
quota_subnet = 100
# Number of ports allowed per project. A negative value means unlimited.
# (integer value)
quota_port = 500
# default driver to use for quota checks
quota_driver = neutron.db.quota.driver_nolock.DbQuotaNoLockDriver
# When set to True, quota usage will be tracked in the Neutron database
# for each resource, by directly mapping to a data model class, for
# example, networks, subnets, ports, etc. When set to False, quota usage
# will be tracked by the quota engine as a count of the object type
# directly. For more information, see the Quota Management and
# Enforcement guide.
# (boolean value)
track_quota_usage = true
#
# From neutron.extensions
#
# Number of routers allowed per project. A negative value means unlimited.
# (integer value)
quota_router = 10
# Number of floating IPs allowed per project. A negative value means
# unlimited.
# (integer value)
quota_floatingip = 50
# Number of security groups allowed per project. A negative value means
# unlimited.
# (integer value)
quota_security_group = 10
# Number of security group rules allowed per project. A negative value means
# unlimited.
# (integer value)
quota_security_group_rule = 100
Configure per-project quotas¶
OpenStack Networking also supports per-project quota limit by quota extension API.
Use these commands to manage per-project quotas:
- openstack quota delete
Delete defined quotas for a specified project
- openstack quota list
Lists defined quotas for all projects with non-default quota values
- openstack quota show
Shows defined quotas for all projects
- openstack quota show <project>
Shows quotas for a specified project
- openstack quota show –default <project>
Show default quotas for a specified project
- openstack quota set –<resource> <value> <project>
Updates quotas for a specified project
Only users with the admin role can change a quota value. By default,
the default set of quotas are enforced for all projects, so no
opentack quota create command exists.
Configure Networking to show per-project quotas
Set the
quota_driveroption in the/etc/neutron/neutron.conffile.quota_driver = neutron.db.quota.driver.DbQuotaDriver
When you set this option, the output for Networking commands shows
quotas.List Networking extensions.
To list the Networking extensions, run this command:
$ openstack extension list --network
The command shows the
quotasextension, which provides per-project quota management support.+------------------------+------------------------+--------------------------+ | Name | Alias | Description | +------------------------+------------------------+--------------------------+ | ... | ... | ... | | Quota management | quotas | Expose functions for | | support | | quotas management per | | | | project | | ... | ... | ... | +------------------------+------------------------+--------------------------+
Show information for the quotas extension.
To show information for the
quotasextension, run this command:$ openstack extension show quotas +-------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | alias | quotas | | description | Expose functions for quotas management per project | | id | quotas | | links | [] | | location | Munch({'cloud': '', 'region_name': 'RegionOne', 'zone': None, 'project': Munch({'id': 'afc55714081b4ef29f99ec128cb1fa30', 'name': 'demo', 'domain_id': 'default', 'domain_name': None})}) | | name | Quota management support | | updated | 2012-07-29T10:00:00-00:00 | +-------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
Note
Only some plug-ins support per-project quotas. Specifically, OVN, Open vSwitch, and Linux Bridge support them, but new versions of other plug-ins might bring additional functionality. See the documentation for each plug-in.
List projects who have per-project quota support.
The openstack quota list command lists projects for which the per-project quota is enabled. The command does not list projects with default quota support. You must be an administrative user to run this command:
$ openstack quota list --network +----------------------------------+--------------+----------+-------+---------------+---------+-----------------+----------------------+---------+--------------+ | Project ID | Floating IPs | Networks | Ports | RBAC Policies | Routers | Security Groups | Security Group Rules | Subnets | Subnet Pools | +----------------------------------+--------------+----------+-------+---------------+---------+-----------------+----------------------+---------+--------------+ | 6f88036c45344d9999a1f971e4882723 | 50 | 100 | 500 | 10 | 20 | 10 | 100 | 100 | -1 | | bff5c9455ee24231b5bc713c1b96d422 | 100 | 100 | 500 | 10 | 10 | 10 | 100 | 100 | -1 | +----------------------------------+--------------+----------+-------+---------------+---------+-----------------+----------------------+---------+--------------+
Show per-project quota values.
The openstack quota show command reports the current set of quota limits for the specified project. Non-administrative users can run this command without the
<project>argument. If per-project quota limits are not enabled for the project, the command shows the default set of quotas.$ openstack quota show 6f88036c45344d9999a1f971e4882723 +----------------+-------+ | Resource | Limit | +----------------+-------+ | networks | 100 | | ports | 500 | | rbac_policies | 10 | | routers | 20 | | subnets | 100 | | subnet_pools | -1 | | floating-ips | 50 | | secgroup-rules | 100 | | secgroups | 10 | +----------------+-------+
The following command shows the command output for a non-administrative user.
$ openstack quota show +----------------+-------+ | Resource | Limit | +----------------+-------+ | networks | 100 | | ports | 500 | | rbac_policies | 10 | | routers | 20 | | subnets | 100 | | subnet_pools | -1 | | floating-ips | 50 | | secgroup-rules | 100 | | secgroups | 10 | +----------------+-------+
Update quota values for a specified project.
Use the openstack quota set command to update a quota for a specified project.
$ openstack quota set --routers 20 6f88036c45344d9999a1f971e4882723
You can update quotas for multiple resources through one command.
$ openstack quota set --subnets 50 --ports 100 6f88036c45344d9999a1f971e4882723
You can update the limits of multiple resources through one command:
$ openstack quota set --networks 50 --subnets 50 --ports 100 \ --floating-ips 20 --routers 5 6f88036c45344d9999a1f971e4882723
Delete per-project quota values.
To clear per-project quota limits, use the openstack quota delete command.
$ openstack quota delete 6f88036c45344d9999a1f971e4882723
After you run this command, you can see that quota values for the project are reset to the default values.
$ openstack quota show --network 6f88036c45344d9999a1f971e4882723 +----------------+-------+ | Resource | Limit | +----------------+-------+ | networks | 100 | | ports | 500 | | rbac_policies | 10 | | routers | 20 | | subnets | 100 | | subnet_pools | -1 | | floating-ips | 50 | | secgroup-rules | 100 | | secgroups | 10 | +----------------+-------+
Note
Listing default quotas with the OpenStack command line client will provide all quotas for networking and other services.
