149076cd2c
Based on conversation on an ansible issue[1], I implemented a LB orchestration role[2] similar to the POC here[3]. This will allow external loadbalancer management roles to hook into a universal notify listener "Manage LB" to perform before/ after endpoint management actions when the service is being restarted. [1]: https://github.com/ansible/ansible/issues/27813 [2]: https://github.com/Logan2211/ansible-haproxy-endpoints [3]: https://github.com/Logan2211/tmp-ansible-27813 This reverts commit f876cf2926d5a80bd4e8b3acd6da2e9553b98e8f. Change-Id: Ib17c9ae6f5e75ce2288d52f6368cd40e9586ffdb
45 lines
1.4 KiB
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45 lines
1.4 KiB
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===============================
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OpenStack-Ansible Galera server
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===============================
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Ansible role to install and configure a Galera cluster powered by MariaDB
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To clone or view the source code for this repository, visit the role repository
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for `galera_server <https://github.com/openstack/openstack-ansible-galera_server>`_.
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Default variables
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~~~~~~~~~~~~~~~~~
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.. literalinclude:: ../../defaults/main.yml
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:language: yaml
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:start-after: under the License.
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Required variables
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~~~~~~~~~~~~~~~~~~
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To use this role, define the following variables:
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.. code-block:: yaml
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galera_root_password: secrete
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Example playbook
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~~~~~~~~~~~~~~~~
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.. literalinclude:: ../../examples/playbook.yml
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:language: yaml
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External Restart Hooks
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~~~~~~~~~~~~~~~~~~~~~~
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When the role performs a restart of the mariadb service, it will notify an
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Ansible handler named ``Manage LB``, which is a noop within this role. In the
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playbook, other roles may be loaded before and after this role which will
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implement Ansible handler listeners for ``Manage LB``, that way external roles
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can manage the load balancer endpoints responsible for sending traffic to the
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MariaDB servers being restarted by marking them in maintenance or active mode,
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draining sessions, etc. For an example implementation, please reference the
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`ansible-haproxy-endpoints role <https://github.com/Logan2211/ansible-haproxy-endpoints>`_
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used by the openstack-ansible project.
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