<?xml version="1.0" encoding="utf-8"?> <section xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0" xml:id="sdk_auth_neutron"> <title>Authenticate against a Networking endpoint</title> <para>To authenticate against a Networking endpoint, instantiate a <classname>neutronclient.v_2_0.client.Client</classname> object:</para> <programlisting language="python">from os import environ as env from neutronclient.v2_0 import client as neutronclient neutron = neutronclient.Client(auth_url=env['OS_AUTH_URL'], username=env['OS_USERNAME'], password=env['OS_PASSWORD'], tenant_name=env['OS_TENANT_NAME'], region_name=env['OS_REGION_NAME'])</programlisting> <para>You can also authenticate by explicitly specifying the endpoint and token:</para> <programlisting language="python">from os import environ as env import keystoneclient.v2_0.client as ksclient from neutronclient.v2_0 import client as neutronclient keystone = ksclient.Client(auth_url=env['OS_AUTH_URL'], username=env['OS_USERNAME'], password=env['OS_PASSWORD'], tenant_name=env['OS_TENANT_NAME'], region_name=env['OS_REGION_NAME']) endpoint_url = keystone.service_catalog.url_for(service_type='network') token = keystone.auth_token neutron = neutronclient.Client(endpoint_url=endpoint_url, token=token)</programlisting> </section>