[DOCS] Edits to appendix F
Change-Id: If4da02742286987382290d497d397af50270d77d Partial-bug: 1629798
This commit is contained in:
Alexandra Settle
Jesse Pretorius (odyssey4me)
parent
5de2bf3c72
commit
f4fa8a947d
@ -2,12 +2,12 @@
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Affinity
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========
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OpenStack-Ansible's dynamic inventory generation has a concept called
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`affinity`. This determines how many containers of a similar type are deployed
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onto a single physical host.
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When OpenStack-Ansible generates its dynamic inventory, the affinity
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setting determines how many containers of a similar type are deployed on a
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single physical host.
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Using `shared-infra_hosts` as an example, consider this
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``openstack_user_config.yml``:
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Using ``shared-infra_hosts`` as an example, consider this
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``openstack_user_config.yml`` configuration:
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.. code-block:: yaml
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@ -21,13 +21,13 @@ Using `shared-infra_hosts` as an example, consider this
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Three hosts are assigned to the `shared-infra_hosts` group,
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OpenStack-Ansible ensures that each host runs a single database container,
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a single memcached container, and a single RabbitMQ container. Each host has
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an affinity of 1 by default, and that means each host will run one of each
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a single Memcached container, and a single RabbitMQ container. Each host has
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an affinity of 1 by default, which means that each host runs one of each
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container type.
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You can skip the deployment of RabbitMQ altogether. This is
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helpful when deploying a standalone swift environment. If you need
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this configuration, your ``openstack_user_config.yml`` would look like this:
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If you are deploying a stand-alone Object Storage (swift) environment,
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you can skip the deployment of RabbitMQ. If you use this configuration,
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your ``openstack_user_config.yml`` file would look as follows:
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.. code-block:: yaml
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@ -45,6 +45,6 @@ this configuration, your ``openstack_user_config.yml`` would look like this:
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rabbit_mq_container: 0
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ip: 172.29.236.103
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The configuration above deploys a memcached container and a database
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container on each host, without the RabbitMQ containers.
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This configuration deploys a Memcached container and a database container
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on each host, but no RabbitMQ containers.
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@ -2,6 +2,9 @@
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Appendix F: Advanced configuration
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===================================
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.. TODO: include intro on what advanced configuration is, whether it’s required
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or optional, and when someone should do it
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.. toctree::
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:maxdepth: 2
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@ -2,33 +2,35 @@
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Overriding OpenStack configuration defaults
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===========================================
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OpenStack has many configuration options available in configuration files
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which are in the form of ``.conf`` files (in a standard ``INI`` file format),
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policy files (in a standard ``JSON`` format) and also ``YAML`` files.
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OpenStack has many configuration options available in ``.conf`` files
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(in a standard ``INI`` file format),
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policy files (in a standard ``JSON`` format) and ``YAML`` files.
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.. note::
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``YAML`` files are only in the ceilometer project at this time.
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OpenStack-Ansible provides the facility to include reference to any options in
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the `OpenStack Configuration Reference`_ through the use of a simple set of
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configuration entries in ``/etc/openstack_deploy/user_variables.yml``.
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OpenStack-Ansible enables you to reference any options in the
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`OpenStack Configuration Reference`_ through the use of a simple set of
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configuration entries in the ``/etc/openstack_deploy/user_variables.yml``.
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This section provides guidance for how to make use of this facility. Further
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guidance is available in the developer documentation in the section titled
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`Setting overrides in configuration files`_.
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This section describes how to use the configuration entries in the
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``/etc/openstack_deploy/user_variables.yml`` file to override default
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configuration settings. For more information, see the
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`Setting overrides in configuration files`_ section in the developer
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documentation.
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.. _OpenStack Configuration Reference: http://docs.openstack.org/draft/config-reference/
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.. _Setting overrides in configuration files: ../developer-docs/extending.html#setting-overrides-in-configuration-files
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Overriding ``.conf`` files
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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Overriding .conf files
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~~~~~~~~~~~~~~~~~~~~~~
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The most common use-case for implementing overrides are for the
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``<service>.conf`` files (for example, ``nova.conf``). These files use a
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standard ``INI`` file format.
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Most often, overrides are implemented for the ``<service>.conf`` files
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(for example, ``nova.conf``). These files use a standard INI file format.
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For example, if you add the following parameters to ``nova.conf``:
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For example, you might want to add the following parameters to the
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``nova.conf`` file:
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.. code-block:: ini
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@ -43,8 +45,8 @@ For example, if you add the following parameters to ``nova.conf``:
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idle_timeout = 300
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max_pool_size = 10
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This is accomplished through the use of the following configuration
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entry in ``/etc/openstack_deploy/user_variables.yml``:
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To do this, you use the following configuration entry in the
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``/etc/openstack_deploy/user_variables.yml`` file:
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.. code-block:: yaml
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@ -58,8 +60,16 @@ entry in ``/etc/openstack_deploy/user_variables.yml``:
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idle_timeout: 300
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max_pool_size: 10
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Overrides may also be applied on a per host basis with the following
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configuration in ``/etc/openstack_deploy/openstack_user_config.yml``:
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.. note::
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The general format for the variable names used for overrides is
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``<service>_<filename>_<file extension>_overrides``. For example, the variable
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name used in these examples to add parameters to the ``nova.conf`` file is
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``nova_nova_conf_overrides``.
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You can also apply overrides on a per-host basis with the following
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configuration in the ``/etc/openstack_deploy/openstack_user_config.yml``
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file:
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.. code-block:: yaml
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@ -77,21 +87,18 @@ configuration in ``/etc/openstack_deploy/openstack_user_config.yml``:
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idle_timeout: 300
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max_pool_size: 10
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Use this method for any ``INI`` file format for all OpenStack projects
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Use this method for any files with the ``INI`` format for in OpenStack projects
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deployed in OpenStack-Ansible.
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To assist you in finding the appropriate variable name to use for
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overrides, the general format for the variable name is:
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``<service>_<filename>_<file extension>_overrides``.
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Overriding .json files
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~~~~~~~~~~~~~~~~~~~~~~
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Overriding ``.json`` files
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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To implement access controls that are different from the ones in a standard
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OpenStack environment, you can adjust the default policies applied by services.
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Policy files are in a ``JSON`` format.
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You can adjust the default policies applied by services in order
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to implement access controls which are different to a standard OpenStack
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environment. Policy files are in a ``JSON`` format.
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For example, you can add the following policy in keystone's ``policy.json``:
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For example, you might want to add the following policy in the ``policy.json``
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file for the Identity service (keystone):
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.. code-block:: json
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@ -100,8 +107,8 @@ For example, you can add the following policy in keystone's ``policy.json``:
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"identity:bar": "rule:admin_required"
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}
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Accomplish this through the use of the following configuration
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entry in ``/etc/openstack_deploy/user_variables.yml``:
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To do this, you use the following configuration entry in the
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``/etc/openstack_deploy/user_variables.yml`` file:
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.. code-block:: yaml
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@ -109,26 +116,34 @@ entry in ``/etc/openstack_deploy/user_variables.yml``:
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identity:foo: "rule:admin_required"
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identity:bar: "rule:admin_required"
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Use this method for all OpenStack projects
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deployed in OpenStack-Ansible with ``JSON`` file formats.
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.. note::
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The general format for the variable names used for overrides is
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``<service>_policy_overrides``. For example, the variable name used in this
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example to add a policy to the Identity service (keystone) ``policy.json`` file
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is ``keystone_policy_overrides``.
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Use this method for any files with the ``JSON`` format in OpenStack projects
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deployed in OpenStack-Ansible.
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To assist you in finding the appropriate variable name to use for
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overrides, the general format for the variable name is
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``<service>_policy_overrides``.
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Overriding YAML files
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Overriding .yml files
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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You can override ``.yml`` file values by supplying replacement YAML content.
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.. note::
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All default YAML file content will be completely overwritten by
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the provided overrides, so the entire YAML source (both the existing
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content and your changes) must be provided.
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All default YAML file content is completely overwritten by the overrides,
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so the entire YAML source (both the existing content and your changes)
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must be provided.
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For example, you can define a meter exclusion for all hardware items
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in the default content of ceilometer's ``pipeline.yml``:
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For example, you might want to define a meter exclusion for all hardware
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items in the default content of the ``pipeline.yml`` file for the
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Telemetry service (ceilometer):
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.. code-block:: yaml
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@ -142,8 +157,8 @@ in the default content of ceilometer's ``pipeline.yml``:
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- name: foo_source
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value: foo
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You can accomplish this through the use of the following configuration
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entry in ``/etc/openstack_deploy/user_variables.yml``:
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To do this, you use the following configuration entry in the
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``/etc/openstack_deploy/user_variables.yml`` file:
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.. code-block:: yaml
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@ -158,14 +173,17 @@ entry in ``/etc/openstack_deploy/user_variables.yml``:
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- name: source_foo
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value: foo
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To assist you in finding the appropriate variable name to use for
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overrides, the general format for the variable name is
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``<service>_<filename>_<file extension>_overrides``.
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.. note::
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The general format for the variable names used for overrides is
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``<service>_<filename>_<file extension>_overrides``. For example, the variable
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name used in this example to define a meter exclusion in the ``pipeline.yml`` file
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for the Telemetry service (ceilometer) is ``ceilometer_pipeline_yaml_overrides``.
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Currently available overrides
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The following is a list of overrides available:
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The following override variables are available.
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Galera:
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* galera_client_my_cnf_overrides
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@ -173,7 +191,7 @@ Galera:
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* galera_cluster_cnf_overrides
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* galera_debian_cnf_overrides
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Ceilometer:
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Telemetry service (ceilometer):
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* ceilometer_policy_overrides
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* ceilometer_ceilometer_conf_overrides
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* ceilometer_api_paste_ini_overrides
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@ -181,13 +199,13 @@ Ceilometer:
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* ceilometer_event_pipeline_yaml_overrides
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* ceilometer_pipeline_yaml_overrides
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Cinder:
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Block Storage (cinder):
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* cinder_policy_overrides
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* cinder_rootwrap_conf_overrides
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* cinder_api_paste_ini_overrides
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* cinder_cinder_conf_overrides
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Glance:
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Image service (glance):
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* glance_glance_api_paste_ini_overrides
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* glance_glance_api_conf_overrides
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* glance_glance_cache_conf_overrides
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@ -198,7 +216,7 @@ Glance:
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* glance_glance_scheme_json_overrides
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* glance_policy_overrides
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Heat:
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Orchestration service (heat):
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* heat_heat_conf_overrides
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* heat_api_paste_ini_overrides
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* heat_default_yaml_overrides
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@ -206,13 +224,13 @@ Heat:
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* heat_aws_rds_dbinstance_yaml_overrides
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* heat_policy_overrides
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Keystone:
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Identity service (keystone):
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* keystone_keystone_conf_overrides
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* keystone_keystone_default_conf_overrides
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* keystone_keystone_paste_ini_overrides
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* keystone_policy_overrides
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Neutron:
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Networking service (neutron):
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* neutron_neutron_conf_overrides
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* neutron_ml2_conf_ini_overrides
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* neutron_dhcp_agent_ini_overrides
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@ -224,13 +242,13 @@ Neutron:
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* neutron_metadata_agent_ini_overrides
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* neutron_metering_agent_ini_overrides
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Nova:
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Compute service (nova):
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* nova_nova_conf_overrides
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* nova_rootwrap_conf_overrides
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* nova_api_paste_ini_overrides
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* nova_policy_overrides
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Swift:
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Object Storage service (swift):
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* swift_swift_conf_overrides
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* swift_swift_dispersion_conf_overrides
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* swift_proxy_server_conf_overrides
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@ -5,39 +5,35 @@ Security hardening
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==================
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OpenStack-Ansible automatically applies host security hardening configurations
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using the `openstack-ansible-security`_ role. The role uses a version of the
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by using the `openstack-ansible-security`_ role. The role uses a version of the
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`Security Technical Implementation Guide (STIG)`_ that has been adapted for
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Ubuntu 14.04 and OpenStack.
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The role is applicable to physical hosts within an OpenStack-Ansible deployment
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that are operating as any type of node, infrastructure or compute. By
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default, the role is enabled. You can disable it by changing a variable
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within ``user_variables.yml``:
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default, the role is enabled. You can disable it by changing the value of
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the ``apply_security_hardening`` variable in the ``user_variables.yml`` file
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to ``false``:
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.. code-block:: yaml
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apply_security_hardening: false
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When the variable is set to ``true``, the ``setup-hosts.yml`` playbook applies
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the role during deployments.
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You can apply security configurations to an existing environment or audit
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an environment using a playbook supplied with OpenStack-Ansible:
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You can apply security hardening configurations to an existing environment or
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audit an environment by using a playbook supplied with OpenStack-Ansible:
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.. code-block:: bash
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# Perform a quick audit using Ansible's check mode
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openstack-ansible --check security-hardening.yml
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# Apply security hardening configurations
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openstack-ansible security-hardening.yml
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Refer to the `openstack-ansible-security`_ documentation for more details on
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the security configurations. Review the `Configuration`_
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section of the openstack-ansible-security documentation to find out how to
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fine-tune certain security configurations.
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# Perform a quick audit by using Ansible's check mode
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openstack-ansible --check security-hardening.yml
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For more information about the security configurations, see the
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`OpenStack-Ansible host security`_ hardening documentation.
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.. _openstack-ansible-security: http://docs.openstack.org/developer/openstack-ansible-security/
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.. _Security Technical Implementation Guide (STIG): https://en.wikipedia.org/wiki/Security_Technical_Implementation_Guide
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.. _Configuration: http://docs.openstack.org/developer/openstack-ansible-security/configuration.html
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.. _OpenStack-Ansible host security: http://docs.openstack.org/developer/openstack-ansible-security/
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.. _Appendix H: ../install-guide/app-custom-layouts.html
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@ -3,87 +3,87 @@ Securing services with SSL certificates
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=======================================
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The `OpenStack Security Guide`_ recommends providing secure communication
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between various services in an OpenStack deployment.
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between various services in an OpenStack deployment. The OpenStack-Ansible
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project currently offers the ability to configure SSL certificates for secure
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communication with the following services:
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.. _OpenStack Security Guide: http://docs.openstack.org/security-guide/secure-communication.html
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The OpenStack-Ansible project currently offers the ability to configure SSL
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certificates for secure communication with the following services:
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* HAProxy
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* Horizon
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* Keystone
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* Dashboard (horizon)
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* Identity (keystone)
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* RabbitMQ
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For each service, you have the option to use self-signed certificates
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For each service, you can either use self-signed certificates that are
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generated during the deployment process or provide SSL certificates,
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keys, and CA certificates from your own trusted certificate authority. Highly
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secured environments use trusted, user-provided, certificates for as
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secured environments use trusted, user-provided certificates for as
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many services as possible.
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.. note::
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Conduct all SSL certificate configuration in
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``/etc/openstack_deploy/user_variables.yml`` and not in the playbook
|
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Perform all SSL certificate configuration in
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``/etc/openstack_deploy/user_variables.yml`` file and not in the playbook
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roles themselves.
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Self-signed certificates
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~~~~~~~~~~~~~~~~~~~~~~~~
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Self-signed certificates ensure you are able to start quickly and you are able
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to encrypt data in transit. However, they do not provide a high level of trust
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for highly secure environments. The use of self-signed certificates is
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currently the default in OpenStack-Ansible. When self-signed certificates are
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being used, certificate verification must be disabled using the following
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user variables depending on your configuration. Add these variables
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in ``/etc/openstack_deploy/user_variables.yml``.
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Self-signed certificates enable you to start quickly and encrypt data in
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transit. However, they do not provide a high level of trust for highly
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secure environments. By default, self-signed certificates are used in
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OpenStack-Ansible. When self-signed certificates are used, you must disable
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certificate verification by using the following user variables, depending on
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your configuration. Add these variables in the
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``/etc/openstack_deploy/user_variables.yml`` file.
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.. code-block:: yaml
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keystone_service_adminuri_insecure: true
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keystone_service_internaluri_insecure: true
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Setting self-signed certificate subject data
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--------------------------------------------
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Setting subject data for self-signed certificates
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-------------------------------------------------
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Change the subject data of any self-signed certificate using
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configuration variables. The configuration variable for each service is
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``<servicename>_ssl_self_signed_subject``. To change the SSL certificate
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subject data for HAProxy, adjust ``/etc/openstack_deploy/user_variables.yml``:
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Change the subject data of any self-signed certificate by using
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configuration variables. The configuration variable for each service
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is formatted as ``<servicename>_ssl_self_signed_subject``. For example, to
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change the SSL certificate subject data for HAProxy, adjust the
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``/etc/openstack_deploy/user_variables.yml`` file as follows:
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.. code-block:: yaml
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|
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haproxy_ssl_self_signed_subject: "/C=US/ST=Texas/L=San Antonio/O=IT/CN=haproxy.example.com"
|
||||
|
||||
|
||||
For more information about the available fields in the certificate subject,
|
||||
refer to OpenSSL's documentation on the `req subcommand`_.
|
||||
see the OpenSSL documentation for the `req subcommand`_.
|
||||
|
||||
.. _req subcommand: https://www.openssl.org/docs/manmaster/apps/req.html
|
||||
|
||||
Generating and regenerating self-signed certificates
|
||||
----------------------------------------------------
|
||||
|
||||
Generate self-signed certificates for each service during the first run
|
||||
of the playbook.
|
||||
Self-signed certificates are generated for each service during the first
|
||||
run of the playbook.
|
||||
|
||||
.. note::
|
||||
To generate a new self-signed certificate for a service, you must set
|
||||
the ``<servicename>_ssl_self_signed_regen`` variable to true in one of the
|
||||
following ways:
|
||||
|
||||
Subsequent runs of the playbook do not generate new SSL
|
||||
certificates unless you set ``<servicename>_ssl_self_signed_regen`` to
|
||||
``true``.
|
||||
|
||||
To force a self-signed certificate to regenerate, you can pass the variable to
|
||||
``openstack-ansible`` on the command line:
|
||||
* To force a self-signed certificate to regenerate, you can pass the variable
|
||||
to ``openstack-ansible`` on the command line:
|
||||
|
||||
.. code-block:: shell-session
|
||||
|
||||
# openstack-ansible -e "horizon_ssl_self_signed_regen=true" os-horizon-install.yml
|
||||
|
||||
To force a self-signed certificate to regenerate with every playbook run,
|
||||
* To force a self-signed certificate to regenerate with every playbook run,
|
||||
set the appropriate regeneration option to ``true``. For example, if
|
||||
you have already run the ``os-horizon`` playbook, but you want to regenerate
|
||||
the self-signed certificate, set the ``horizon_ssl_self_signed_regen`` variable
|
||||
to ``true`` in ``/etc/openstack_deploy/user_variables.yml``:
|
||||
the self-signed certificate, set the ``horizon_ssl_self_signed_regen``
|
||||
variable to ``true`` in the ``/etc/openstack_deploy/user_variables.yml``
|
||||
file:
|
||||
|
||||
.. code-block:: yaml
|
||||
|
||||
@ -98,25 +98,27 @@ to ``true`` in ``/etc/openstack_deploy/user_variables.yml``:
|
||||
User-provided certificates
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
You can provide your own SSL certificates, keys, and CA certificates
|
||||
for added trust in highly secure environments. Acquiring certificates from a
|
||||
For added trust in highly secure environments, you can provide your own SSL
|
||||
certificates, keys, and CA certificates. Acquiring certificates from a
|
||||
trusted certificate authority is outside the scope of this document, but the
|
||||
`Certificate Management`_ section of the Linux Documentation Project explains
|
||||
how to create your own certificate authority and sign certificates.
|
||||
|
||||
.. _Certificate Management: http://www.tldp.org/HOWTO/SSL-Certificates-HOWTO/c118.html
|
||||
|
||||
Deploying user-provided SSL certificates is a three step process:
|
||||
Use the following process to deploy user-provided SSL certificates in
|
||||
OpenStack-Ansible:
|
||||
|
||||
#. Copy your SSL certificate, key, and CA certificate to the deployment host.
|
||||
#. Copy your SSL certificate, key, and CA certificate files to the deployment
|
||||
host.
|
||||
#. Specify the path to your SSL certificate, key, and CA certificate in
|
||||
``/etc/openstack_deploy/user_variables.yml``.
|
||||
the ``/etc/openstack_deploy/user_variables.yml`` file.
|
||||
#. Run the playbook for that service.
|
||||
|
||||
For example, to deploy user-provided certificates for RabbitMQ,
|
||||
copy the certificates to the deployment host, edit
|
||||
``/etc/openstack_deploy/user_variables.yml`` and set the following three
|
||||
variables:
|
||||
the ``/etc/openstack_deploy/user_variables.yml`` file and set the following
|
||||
three variables:
|
||||
|
||||
.. code-block:: yaml
|
||||
|
||||
@ -124,7 +126,7 @@ variables:
|
||||
rabbitmq_user_ssl_key: /tmp/example.com.key
|
||||
rabbitmq_user_ssl_ca_cert: /tmp/ExampleCA.crt
|
||||
|
||||
Run the playbook to apply the certificates:
|
||||
Then, run the playbook to apply the certificates:
|
||||
|
||||
.. code-block:: shell-session
|
||||
|
||||
@ -133,7 +135,7 @@ Run the playbook to apply the certificates:
|
||||
The playbook deploys your user-provided SSL certificate, key, and CA
|
||||
certificate to each RabbitMQ container.
|
||||
|
||||
The process is identical to the other services. Replace
|
||||
``rabbitmq`` in the configuration variables shown above with ``horizon``,
|
||||
``haproxy``, or ``keystone`` to deploy user-provided certificates to those
|
||||
services.
|
||||
The process is identical for the other services. Replace `rabbitmq` in
|
||||
the preceding configuration variables with `horizon`, `haproxy`, or `keystone`,
|
||||
and then run the playbook for that service to deploy user-provided certificates
|
||||
to those services.
|
||||
|
||||
@ -4,11 +4,11 @@
|
||||
Advanced service configuration
|
||||
==============================
|
||||
|
||||
OpenStack-Ansible has many options which can be used for the advanced
|
||||
configuration of services. Each role's documentation provides more
|
||||
insight into the options available and what they are used for.
|
||||
OpenStack-Ansible has many options that you can use for the advanced
|
||||
configuration of services. Each role's documentation provides information
|
||||
about the available options.
|
||||
|
||||
The following options are not necessary to set - they are entirely optional.
|
||||
The following options are optional.
|
||||
|
||||
Infrastructure service roles
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
Loading…
Reference in New Issue
Block a user