a4053a927d
1. Tidy up index.rst 2. Move targethosts-network.rst content to overview chapter 3. Move LXC commands section to dev docs 4. Add host layout diagrams 5. Installation workflow section - move Network ranges subsection to Network Architecture section Change-Id: Idea40a7d8f4cd9926876a57f7cfb3162c0c7dd82 Implements: blueprint osa-install-guide-overhaul
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`Home <index.html>`_ OpenStack-Ansible Installation Guide
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=======================
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About OpenStack-Ansible
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=======================
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OpenStack-Ansible (OSA) uses the Ansible IT automation engine to
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deploy an OpenStack environment on Ubuntu Linux. OpenStack components may
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be installed into Linux Containers (LXC) for isolation and ease of
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maintenance.
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This documentation is intended for deployers, and walks through an
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OpenStack-Ansible installation for a test environment, and a production
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environment.
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Third-party trademarks and tradenames appearing in this document are the
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property of their respective owners. Such third-party trademarks have
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been printed in caps or initial caps and are used for referential
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purposes only. We do not intend our use or display of other companies'
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tradenames, trademarks, or service marks to imply a relationship with,
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or endorsement or sponsorship of us by, these other companies.
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Ansible
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~~~~~~~
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Ansible provides an automation platform to simplify system and application
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deployment. Ansible manages systems using Secure Shell (SSH)
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instead of unique protocols that require remote daemons or agents.
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Ansible uses playbooks written in the YAML language for orchestration.
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For more information, see `Ansible - Intro to
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Playbooks <http://docs.ansible.com/playbooks_intro.html>`_.
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In this guide, we refer to the host running Ansible playbooks as
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the deployment host and the hosts on which Ansible installs OpenStack services
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and infrastructure components as the target hosts.
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Linux Containers (LXC)
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~~~~~~~~~~~~~~~~~~~~~~
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Containers provide operating-system level virtualization by enhancing
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the concept of ``chroot`` environments, which isolate resources and file
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systems for a particular group of processes without the overhead and
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complexity of virtual machines. They access the same kernel, devices,
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and file systems on the underlying host and provide a thin operational
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layer built around a set of rules.
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The Linux Containers (LXC) project implements operating system level
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virtualization on Linux using kernel namespaces and includes the
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following features:
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- Resource isolation including CPU, memory, block I/O, and network
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using ``cgroups``.
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- Selective connectivity to physical and virtual network devices on the
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underlying physical host.
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- Support for a variety of backing stores including LVM.
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- Built on a foundation of stable Linux technologies with an active
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development and support community.
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--------------
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.. include:: navigation.txt
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