f3fd44c4be
This reverts commit 5a5cbf7274.
This breaks on a default openstack install on Ubuntu 12.10,
revert for now until this can be cleaned up to work out of the
box.
Change-Id: I185509cc30bd28e920cdab60fc92129949bd6b0d
104 lines
4.4 KiB
Markdown
104 lines
4.4 KiB
Markdown
DevStack is a set of scripts and utilities to quickly deploy an OpenStack cloud.
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# Goals
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* To quickly build dev OpenStack environments in a clean Ubuntu or Fedora environment
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* To describe working configurations of OpenStack (which code branches work together? what do config files look like for those branches?)
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* To make it easier for developers to dive into OpenStack so that they can productively contribute without having to understand every part of the system at once
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* To make it easy to prototype cross-project features
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* To sanity-check OpenStack builds (used in gating commits to the primary repos)
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Read more at http://devstack.org (built from the gh-pages branch)
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IMPORTANT: Be sure to carefully read `stack.sh` and any other scripts you execute before you run them, as they install software and may alter your networking configuration. We strongly recommend that you run `stack.sh` in a clean and disposable vm when you are first getting started.
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# Devstack on Xenserver
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If you would like to use Xenserver as the hypervisor, please refer to the instructions in `./tools/xen/README.md`.
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# Versions
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The devstack master branch generally points to trunk versions of OpenStack components. For older, stable versions, look for branches named stable/[release] in the DevStack repo. For example, you can do the following to create a diablo OpenStack cloud:
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git checkout stable/diablo
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./stack.sh
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You can also pick specific OpenStack project releases by setting the appropriate `*_BRANCH` variables in `localrc` (look in `stackrc` for the default set). Usually just before a release there will be milestone-proposed branches that need to be tested::
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GLANCE_REPO=https://github.com/openstack/glance.git
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GLANCE_BRANCH=milestone-proposed
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# Start A Dev Cloud
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Installing in a dedicated disposable vm is safer than installing on your dev machine! To start a dev cloud:
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./stack.sh
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When the script finishes executing, you should be able to access OpenStack endpoints, like so:
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* Horizon: http://myhost/
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* Keystone: http://myhost:5000/v2.0/
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We also provide an environment file that you can use to interact with your cloud via CLI:
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# source openrc file to load your environment with osapi and ec2 creds
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. openrc
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# list instances
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nova list
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If the EC2 API is your cup-o-tea, you can create credentials and use euca2ools:
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# source eucarc to generate EC2 credentials and set up the environment
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. eucarc
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# list instances using ec2 api
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euca-describe-instances
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# Customizing
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You can override environment variables used in `stack.sh` by creating file name `localrc`. It is likely that you will need to do this to tweak your networking configuration should you need to access your cloud from a different host.
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# Database Backend
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Multiple database backends are available. The available databases are defined in the lib/databases directory.
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`mysql` is the default database, choose a different one by putting the following in `localrc`:
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disable_service mysql
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enable_service postgresql
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`mysql` is the default database.
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# RPC Backend
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Multiple RPC backends are available. Currently, this
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includes RabbitMQ (default), Qpid, and ZeroMQ. Your backend of
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choice may be selected via the `localrc`.
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Note that selecting more than one RPC backend will result in a failure.
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Example (ZeroMQ):
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ENABLED_SERVICES="$ENABLED_SERVICES,-rabbit,-qpid,zeromq"
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Example (Qpid):
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ENABLED_SERVICES="$ENABLED_SERVICES,-rabbit,-zeromq,qpid"
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# Swift
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Swift is not installed by default, you can enable easily by adding this to your `localrc`:
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enable_service swift
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If you want a minimal Swift install with only Swift and Keystone you can have this instead in your `localrc`:
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disable_all_services
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enable_service key mysql swift
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If you use Swift with Keystone, Swift will authenticate against it. You will need to make sure to use the Keystone URL to auth against.
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If you are enabling `swift3` in `ENABLED_SERVICES` devstack will install the swift3 middleware emulation. Swift will be configured to act as a S3 endpoint for Keystone so effectively replacing the `nova-objectstore`.
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Only Swift proxy server is launched in the screen session all other services are started in background and managed by `swift-init` tool.
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By default Swift will configure 3 replicas (and one spare) which could be IO intensive on a small vm, if you only want to do some quick testing of the API you can choose to only have one replica by customizing the variable `SWIFT_REPLICAS` in your `localrc`.
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