openstack/openstack-ansible
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Merge "[doc] Update documentation for galera cluster recovery"

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Zuul 2024-02-05 08:43:10 +00:00 committed by Gerrit Code Review
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doc/source/admin/maintenance-tasks/galera.rst
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@ -149,14 +149,23 @@ one of the nodes.
Galera cluster recovery
-----------------------
Run the ``galera-install`` playbook using the ``galera-bootstrap`` tag
Run the ``galera-install`` playbook using the ``galera_force_bootstrap`` variable
to automatically recover a node or an entire environment.
#. Run the following Ansible command to show the failed nodes:
.. code-block:: shell-session
# openstack-ansible galera-install.yml --tags galera-bootstrap
# openstack-ansible galera-install.yml -e galera_force_bootstrap=True --tags galera_server-config
You can additionally define a different bootstrap node through
``galera_server_bootstrap_node`` variable, in case current bootstrap node is in
desynced/broken state. You can check what node is currently selected for
bootstrap using this ad-hoc:
.. code-block:: shell-session
root@aio1:/opt/openstack-ansible# ansible -m debug -a var="groups['galera_all'][0]" localhost
The cluster comes back online after completion of this command. If this
fails, please review `restarting the cluster`_ and `recovering the primary