Merge "add federation docs for mod_auth_mellon"
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@ -56,14 +56,18 @@ To enable federation, you'll need to:
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Configure Apache to use a federation capable authentication method
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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There are many ways to configure Federation in the Apache HTTPD server.
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Using Shibboleth and OpenID Connect are documented so far.
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There is currently support for two major federation protocols:
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* To use Shibboleth, follow the steps outlined at: `Setup Shibboleth`_.
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* To use OpenID Connect, follow the steps outlined at: `Setup OpenID Connect`_.
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* SAML - Keystone supports the following implementations:
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* Shibboleth - see `Setup Shibboleth`_.
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* Mellon - see `Setup Mellon`_.
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* OpenID Connect - see `Setup OpenID Connect`_.
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.. _`Setup Shibboleth`: federation/shibboleth.html
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.. _`Setup OpenID Connect`: federation/openidc.html
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.. _`Setup Mellon`: federation/mellon.html
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Configure keystone and Horizon for Single Sign-On
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -0,0 +1,122 @@
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:orphan:
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..
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations
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under the License.
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==============================
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Setup Mellon (mod_auth_mellon)
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==============================
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Configure Apache HTTPD for mod_auth_mellon
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Follow the steps outlined at: `Running Keystone in HTTPD`_.
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.. _`Running Keystone in HTTPD`: ../apache-httpd.html
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You'll also need to install the Apache module `mod_auth_mellon
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<https://github.com/UNINETT/mod_auth_mellon>`_. For example:
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.. code-block:: bash
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$ apt-get install libapache2-mod-auth-mellon
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Configure your Keystone virtual host and adjust the config to properly handle SAML2 workflow:
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Add *WSGIScriptAlias* directive to your vhost configuration::
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WSGIScriptAliasMatch ^(/v3/OS-FEDERATION/identity_providers/.*?/protocols/.*?/auth)$ /var/www/keystone/main/$1
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Make sure the *wsgi-keystone.conf* contains a *<Location>* directive for the Mellon module and
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a *<Location>* directive for each identity provider::
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<Location /v3>
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MellonEnable "info"
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MellonSPPrivateKeyFile /etc/httpd/mellon/http_keystone.fqdn.key
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MellonSPCertFile /etc/httpd/mellon/http_keystone.fqdn.cert
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MellonSPMetadataFile /etc/httpd/mellon/http_keystone.fqdn.xml
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MellonIdPMetadataFile /etc/httpd/mellon/idp-metadata.xml
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MellonEndpointPath /v3/OS-FEDERATION/identity_providers/idp_1/protocols/saml2/auth/mellon
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MellonIdP "IDP"
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</Location>
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<Location /v3/OS-FEDERATION/identity_providers/idp_1/protocols/saml2/auth>
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AuthType "Mellon"
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MellonEnable "auth"
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</Location>
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.. NOTE::
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* See below for information about how to generate the values for the
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`MellonSPMetadataFile`, etc. directives.
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* ``saml2`` may be different in your deployment, but do not use a wildcard value.
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Otherwise *every* federated protocol will be handled by Mellon.
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* ``idp_1`` has to be replaced with the name associated with the IdP in Keystone.
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* You are advised to carefully examine `mod_auth_mellon Apache
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configuration documentation
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<https://github.com/UNINETT/mod_auth_mellon>`_
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Enable the Keystone virtual host, for example:
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.. code-block:: bash
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$ a2ensite wsgi-keystone.conf
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Enable the ``ssl`` and ``auth_mellon`` modules, for example:
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.. code-block:: bash
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$ a2enmod ssl
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$ a2enmod auth_mellon
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Restart the Apache instance that is serving Keystone, for example:
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.. code-block:: bash
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$ service apache2 restart
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Configuring the Mellon SP Metadata
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Mellon provides a script called ``mellon_create_metadata.sh`` which generates the
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values for the config directives `MellonSPPrivateKeyFile`, `MellonSPCertFile`,
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and `MellonSPMetadataFile`. It is run like this:
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.. code-block:: bash
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$ mellon_create_metadata.sh http://keystone.fqdn:5000 \
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http://keystone.fqdn:5000/v3/OS-FEDERATION/identity_providers/idp_1/protocols/saml2/auth/mellon
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The first parameter is used as the entity ID, a unique identifier for this
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Keystone SP. You do not have to use the URL, but it is an easy way to uniquely
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identify each Keystone SP. The second parameter is the full URL for the
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endpoint path corresponding to the parameter `MellonEndpointPath`.
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Fetch your Service Provider's Metadata file. This corresponds to the value of
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the `MellonIdPMetadataFile` directive above. For example:
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.. code-block:: bash
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$ wget --cacert /path/to/ca.crt -O /etc/httpd/mellon/idp-metadata.xml \
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https://idp.fqdn/idp/saml2/metadata
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Upload your Service Provider's Metadata file to your Identity Provider. This
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is the file used as the value of the `MellonSPMetadataFile` in the config,
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generated by the `mellon_create_metadata.sh` script. The IdP may provide a
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webpage where you can upload the file, or you may be required to submit the
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file using `wget` or `curl`. Please check your IdP documentation for details.
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Once you are done, restart the Apache instance that is serving Keystone, for example:
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.. code-block:: bash
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$ service apache2 restart
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@ -89,6 +89,22 @@ If `mod_auth_kerb` is used, then use the following as an example:
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</Location>
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</VirtualHost>
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If `mod_auth_mellon` is used, then use the following as an example:
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.. code-block:: xml
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<VirtualHost *:5000>
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...
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<Location ~ "/v3/auth/OS-FEDERATION/websso/saml2">
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AuthType Mellon
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MellonEnable auth
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Require valid-user
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...
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</Location>
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</VirtualHost>
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.. NOTE::
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If you are also using SSO via the API, don't forget to make the Location
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settings match your configuration used for the keystone identity provider
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@ -101,7 +117,7 @@ A remote id attribute indicates the header to retrieve from the WSGI
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environment. This header contains information about the identity
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of the identity provider. For `mod_shib` this would be
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``Shib-Identity-Provider``, for `mod_auth_openidc`, this could be
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``HTTP_OIDC_ISS``.
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``HTTP_OIDC_ISS``. For `mod_auth_mellon`, this could be ``MELLON_IDP``.
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It is recommended that this option be set on a per-protocol basis.
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