Learning OpenStack Networking (Neutron) - Second Edition

Per-tenant quotas

To prevent system resources from being exhausted, Neutron supports per-tenant quota limits via the quotas extension. Every tenant is bound to a default quota that is set by the administrator in the Neutron configuration file, as follows:

[quotas]
# Default driver to use for quota checks
# quota_driver = neutron.db.quota_db.DbQuotaDriver

# Resource name(s) that are supported in quota features
# quota_items = network,subnet,port

# Default number of resource allowed per tenant. 
# default_quota = -1

# Number of networks allowed per tenant. 
# quota_network = 10

# Number of subnets allowed per tenant. 
# quota_subnet = 10

# Number of ports allowed per tenant. 
# quota_port = 50

# Number of security groups allowed per tenant. 
# quota_security_group ...