5db330d9dc
AODH now uses MySQL and needs Ansible tasks to setup the respective DB and user. Related: I94a585f9c1da51c4f278f4a12e29d395a261e716x Change-Id: Ie5705ead548f2ceed50348131cdc5ab8f72e12f4
62 lines
2.0 KiB
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62 lines
2.0 KiB
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`Home <index.html>`_ OpenStack-Ansible Installation Guide
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Configuring the Aodh service (optional)
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=======================================
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The Telemetry (ceilometer) alarming services perform the following functions:
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- Creates an API endpoint for controlling alarms.
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- Allows you to set alarms based on threshold evaluation for a collection of samples.
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Configuring the hosts
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~~~~~~~~~~~~~~~~~~~~~
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Configure Aodh by specifying the ``metering-alarm_hosts`` directive in
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the ``/etc/openstack_deploy/conf.d/aodh.yml`` file. The following shows
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the example included in the
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``etc/openstack_deploy/conf.d/aodh.yml.example`` file:
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.. code-block:: yaml
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# The infra nodes that the Aodh services run on.
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metering-alarm_hosts:
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infra1:
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ip: 172.20.236.111
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infra2:
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ip: 172.20.236.112
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infra3:
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ip: 172.20.236.113
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The ``metering-alarm_hosts`` provides several services:
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- An API server (``aodh-api``): Runs on one or more central management
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servers to provide access to the alarm information in the
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data store.
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- An alarm evaluator (``aodh-evaluator``): Runs on one or more central
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management servers to determine alarm fire due to the
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associated statistic trend crossing a threshold over a sliding
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time window.
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- A notification listener (``aodh-listener``): Runs on a central
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management server and fire alarms based on defined rules against
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event captured by ceilometer's module's notification agents.
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- An alarm notifier (``aodh-notifier``). Runs on one or more central
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management servers to allow the setting of alarms to base on the
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threshold evaluation for a collection of samples.
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These services communicate by using the OpenStack messaging bus. Only
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the API server has access to the data store.
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Run the ``os-aodh-install.yml`` playbook. If deploying a new OpenStack
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(instead of only Aodh), run ``setup-openstack.yml``.
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The Aodh playbooks run as part of this playbook.
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--------------
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.. include:: navigation.txt
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