157 lines
4.7 KiB
ReStructuredText
157 lines
4.7 KiB
ReStructuredText
=============================
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Highly available Identity API
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=============================
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You should be familiar with
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`OpenStack Identity service
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<http://docs.openstack.org/admin-guide/common/get_started_identity.html>`_
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before proceeding, which is used by many services.
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Making the OpenStack Identity service highly available
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in active / passive mode involves:
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- :ref:`identity-pacemaker`
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- :ref:`identity-config-identity`
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- :ref:`identity-services-config`
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.. _identity-pacemaker:
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Add OpenStack Identity resource to Pacemaker
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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SUSE
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-----
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SUSE Enterprise Linux and SUSE-based distributions, such as openSUSE,
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use a set of OCF agents for controlling OpenStack services.
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#. You must first download the OpenStack Identity resource to Pacemaker
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by running the following commands:
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.. code-block:: console
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# cd /usr/lib/ocf/resource.d
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# mkdir openstack
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# cd openstack
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# wget https://git.openstack.org/cgit/openstack/openstack-resource-agents/plain/ocf/keystone
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# chmod a+rx *
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#. You can now add the Pacemaker configuration
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for the OpenStack Identity resource
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by running the :command:`crm configure` command
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to connect to the Pacemaker cluster.
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Add the following cluster resources:
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::
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primitive p_keystone ocf:openstack:keystone \
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params config="/etc/keystone/keystone.conf" os_password="secretsecret" os_username="admin" os_tenant_name="admin" os_auth_url="http://10.0.0.11:5000/v2.0/" \
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op monitor interval="30s" timeout="30s"
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This configuration creates ``p_keystone``,
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a resource for managing the OpenStack Identity service.
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:command:`crm configure` supports batch input
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so you may copy and paste the above lines
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into your live Pacemaker configuration,
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and then make changes as required.
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For example, you may enter edit ``p_ip_keystone``
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from the :command:`crm configure` menu
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and edit the resource to match your preferred virtual IP address.
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#. After you add these resources,
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commit your configuration changes by entering :command:`commit`
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from the :command:`crm configure` menu.
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Pacemaker then starts the OpenStack Identity service
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and its dependent resources on one of your nodes.
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Red Hat
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--------
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For Red Hat Enterprise Linux and Red Hat-based Linux distributions,
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the process is simpler as they use the standard Systemd unit files.
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.. code-block:: console
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# pcs resource create openstack-keystone systemd:openstack-keystone --clone interleave=true
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.. _identity-config-identity:
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Configure OpenStack Identity service
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#. Edit the :file:`keystone.conf` file
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to change the values of the :manpage:`bind(2)` parameters:
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.. code-block:: ini
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bind_host = 10.0.0.12
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public_bind_host = 10.0.0.12
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admin_bind_host = 10.0.0.12
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The ``admin_bind_host`` parameter
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lets you use a private network for admin access.
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#. To be sure that all data is highly available,
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ensure that everything is stored in the MySQL database
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(which is also highly available):
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.. code-block:: ini
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[catalog]
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driver = keystone.catalog.backends.sql.Catalog
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...
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[identity]
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driver = keystone.identity.backends.sql.Identity
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...
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.. _identity-services-config:
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Configure OpenStack services to use the highly available OpenStack Identity
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Your OpenStack services must now point
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their OpenStack Identity configuration
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to the highly available virtual cluster IP address
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rather than point to the physical IP address
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of an OpenStack Identity server as you would do
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in a non-HA environment.
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#. For OpenStack Compute, for example,
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if your OpenStack Identiy service IP address is 10.0.0.11,
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use the following configuration in your :file:`api-paste.ini` file:
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.. code-block:: ini
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auth_host = 10.0.0.11
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#. You also need to create the OpenStack Identity Endpoint
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with this IP address.
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.. note::
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If you are using both private and public IP addresses,
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you should create two virtual IP addresses
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and define your endpoint like this:
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.. code-block:: console
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$ openstack endpoint create --region $KEYSTONE_REGION \
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$service-type public http://PUBLIC_VIP:5000/v2.0
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$ openstack endpoint create --region $KEYSTONE_REGION \
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$service-type admin http://10.0.0.11:35357/v2.0
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$ openstack endpoint create --region $KEYSTONE_REGION \
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$service-type internal http://10.0.0.11:5000/v2.0
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#. If you are using the horizon dashboard,
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edit the :file:`local_settings.py` file
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to include the following:
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.. code-block:: ini
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OPENSTACK_HOST = 10.0.0.11
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