1c29ed3182
Remove Fuel, screen-based DevStack, Pacemaker and Linux service drivers. Rename devstack_systemd into devstack. Use common schema for auth parameters. Change-Id: I38b5f82282b72e969fc08e0948109939c95cf948
63 lines
2.2 KiB
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63 lines
2.2 KiB
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=================
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OS-Faults + Rally
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=================
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Combination of OS-Faults and `Rally`_ gives a powerful tool to test OpenStack high availability
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and fail-over under the load.
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Fault injection is implemented with help of Rally `Fault Injection Hook`_. Following
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is an example of Rally scenario performing Keystone authentication with restart of one of
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Memcached services:
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.. code-block:: yaml
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---
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Authenticate.keystone:
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-
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runner:
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type: "constant_for_duration"
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duration: 30
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concurrency: 5
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context:
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users:
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tenants: 1
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users_per_tenant: 1
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hooks:
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-
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name: fault_injection
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args:
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action: restart memcached service on one node
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trigger:
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name: event
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args:
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unit: iteration
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at: [100]
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The moment of fault injection can be specified as iteration number or in time relative
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to the beginning of the test:
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.. code-block:: yaml
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trigger:
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name: event
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args:
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unit: time
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at: [10]
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Parameter `action` contains fault specification in human-friendly format, see
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:ref:`Human API` for details.
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More on reliability testing of OpenStack:
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* `Reliability Test Plan`_ in OpenStack performance documentation
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* `Keystone authentication with restart memcached report`_ collected in OpenStack deployed by Fuel
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* `Introduction into reliability metrics`_ video cast
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.. references:
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.. _Rally: http://rally.readthedocs.io
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.. _Fault Injection Hook: http://docs.xrally.xyz/projects/openstack/en/0.10.0/plugins/plugin_reference.html?highlight=fault_injection#fault-injection-hook-action
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.. _Reliability Test Plan: https://docs.openstack.org/performance-docs/latest/test_plans/reliability/version_2/plan.html
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.. _Keystone authentication with restart memcached report: https://docs.openstack.org/performance-docs/latest/test_results/reliability/version_2/reports/keystone/authenticate_with_restart_memcached_service_on_one_node/index.html
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.. _Introduction into reliability metrics: https://youtu.be/MIj4clkKtfY
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