8e9507bf9a
This change moves the .rst files into the main adming-guide-cloud folder now conversion is complete. changes to the project config and to the openstack manuals to stop sync of .xml files are also needed. Change-Id: I498e8d6ac3cb80da413e23b14a0959abd58e7d79 Implements: blueprint reorganise-user-guides
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1.6 KiB
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36 lines
1.6 KiB
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============
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Introduction
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============
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Orchestration is a tool for orchestrating clouds that automatically
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configures and deploys resources in stacks. Such deployments can be
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simple — like deploying WordPress on Ubuntu with an SQL back end.
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And they can be quite complex, like launching a group of servers that
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autoscale: starting and stopping based on realtime CPU loading
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information from the Telemetry module.
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Orchestration stacks are defined with templates, which are
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non-procedural documents describing tasks in terms of resources,
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parameters, inputs, constraints and dependencies. When Orchestration
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module was originally introduced, it worked with AWS CloudFormation
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templates, which are in JSON format.
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Now, Orchestration also executes HOT (Heat Orchestration Template)
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templates written in YAML: a terse notation that loosely follows
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Python/Ruby-type structural conventions (colons, returns,
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indentation), so it is more easy to write, parse, grep, generate with
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tools, and maintain source-code management systems.
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Orchestration can be accessed via the CLI, and using RESTful queries.
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Orchestration module provides both an OpenStack-native REST API and a
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CloudFormation-compatible Query API. Orchestration is also integrated
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with OpenStack dashboard in order to launch stacks from templates
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through a web interface.
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For more details on how to use Orchestration module through a command
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line, see `OpenStack Command-Line Interface Reference`_.
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.. Links
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.. _`OpenStack Command-Line Interface Reference`: http://docs.openstack.org/
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cli-reference/content/heatclient_commands.html
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