Sean Dague bc883df1c2 add networking write up for devstack

This explains the current state of networking in devstack, and a
couple of scenarios that people might want to try out for local
testing.

Change-Id: I2be35f4345bf9306c981ef6f0186b48da7d06772

2016-08-12 07:21:59 -04:00

3.9 KiB

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It is really easy for online docs to meander over time as people attempt to add the small bit of additional information they think people need, into an existing information architecture. In order to prevent that we need to be a bit strict as to what's on this front page.

This should only be the quick start narrative. Which should end with 2 sections: what you can do with devstack once it's set up, and how to go beyond this setup. Both should be a set of quick links to other documents to let people explore from there.

DevStack

DevStack is a series of extensible scripts used to quickly bring up a complete OpenStack environment based on the latest versions of everything from git master. It is used interactively as a development environment and as the basis for much of the OpenStack project's functional testing.

The source is available at https://git.openstack.org/cgit/openstack-dev/devstack.

Warning

DevStack will make substantial changes to your system during installation. Only run DevStack on servers or virtual machines that are dedicated to this purpose.

Quick Start

Install Linux

Start with a clean and minimal install of a Linux system. Devstack attempts to support Ubuntu 14.04/16.04, Fedora 23/24, CentOS/RHEL 7, as well as Debian and OpenSUSE.

If you do not have a preference, Ubuntu 16.04 is the most tested, and will probably go the smoothest.

Download DevStack

git clone https://git.openstack.org/openstack-dev/devstack

The devstack repo contains a script that installs OpenStack and templates for configuration files

Create a local.conf

Create a local.conf file with 4 passwords preset

[[local|localrc]]
ADMIN_PASSWORD=secret
DATABASE_PASSWORD=$ADMIN_PASSWORD
RABBIT_PASSWORD=$ADMIN_PASSWORD
SERVICE_PASSWORD=$ADMIN_PASSWORD

This is the minimum required config to get started with DevStack.

Add Stack User

Devstack should be run as a non-root user with sudo enabled (standard logins to cloud images such as "ubuntu" or "cloud-user" are usually fine).

You can quickly create a separate stack user to run DevStack with

devstack/tools/create-stack-user.sh; su stack

Start the install

cd devstack; ./stack.sh

This will take a 15 - 20 minutes, largely depending on the speed of your internet connection. Many git trees and packages will be installed during this process.

Profit!

You now have a working DevStack! Congrats!

Your devstack will have installed keystone, glance, nova, cinder, neutron, and horizon. Floating IPs will be available, guests have access to the external world.

You can access horizon to experience the web interface to OpenStack, and manage vms, networks, volumes, and images from there.

You can source openrc in your shell, and then use the openstack command line tool to manage your devstack.

You can cd /opt/stack/tempest and run tempest tests that have been configured to work with your devstack.

You can make code changes to OpenStack and validate them <development>.

Going further

Learn more about our configuration system <configuration> to customize devstack for your needs. Including making adjustments to the default networking <networking>.

Read guides <guides> for specific setups people have (note: guides are point in time contributions, and may not always be kept up to date to the latest devstack).

Enable devstack plugins <plugins> to support additional services, features, and configuration not present in base devstack.

Get the big picture <overview> of what we are trying to do with devstack, and help us by contributing to the project <hacking>.

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