Networking API and credential configuration

Each time a VM is provisioned or de-provisioned in OpenStack Compute, nova-* services communicate with OpenStack Networking using the standard API. For this to happen, you must configure the following items in the nova.conf file (used by each nova-compute and nova-api instance).

Table 4.43. nova.conf API and credential settings
Item	Configuration
`network_api_class`	Modify from the default to `nova.network.neutronv2.api.API`, to indicate that OpenStack Networking should be used rather than the traditional `nova-network` networking model.
`neutron_url`	Update to the hostname/IP and port of the `neutron-server` instance for this deployment.
`neutron_auth_strategy`	Keep the default `keystone` value for all production deployments.
`neutron_admin_tenant_name`	Update to the name of the service tenant created in the above section on OpenStack Identity configuration.
`neutron_admin_username`	Update to the name of the user created in the above section on OpenStack Identity configuration.
`neutron_admin_password`	Update to the password of the user created in the above section on OpenStack Identity configuration.
`neutron_admin_auth_url`	Update to the OpenStack Identity server IP and port. This is the Identity (keystone) admin API server IP and port value, and not the Identity service API IP and port.

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