txlf: automated deployment of openstack with chef
DESCRIPTION
Automated Deployment of OpenStack with Chef talk given April 2, 2011 at the Texas Linux Fest.TRANSCRIPT
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Texas Linux FestApril 2, 2011
Automated Deployment of OpenStack with Chef
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Introductions
Matt Ray
Senior Technical Evangelist
@mattray
GitHub:mattray
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What is OpenStack?
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But do we really have to choose?
NASA Founders operate at
massive scale
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OpenStack: The Mission
"To produce the ubiquitous Open Source cloud computing platform that will meet the needs of public and private cloud providers regardless of size, by being simple to implement and massively scalable."
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OpenStack Founding Principles
Apache 2.0 license (OSI), open development process
Open design process, 2x year public Design Summits
Publicly available open source code repositories
Open community processes documented and transparent
Commitment to drive and adopt open standards
Modular design for deployment flexibility via APIs
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Community with Broad Support
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creating open source software to build public and private
clouds
Software to provision virtual machines on standard hardware at massive scale
OpenStack Compute
Software to reliably store billions of objects distributed across standard hardware
OpenStack Object Storage
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Asynchronous eventually consistent
communication
ReST-based API
Horizontally and massively scalable
Hypervisor agnostic: support for Xen ,XenServer, Hyper-V,
KVM, UML and ESX is coming Hardware agnostic: standard hardware, RAID not required
OpenStack Compute Key Features
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API: Receives HTTP requests, converts commands to/from API format, and sends requests to cloud controller
Cloud Controller: Global state of system, talks to LDAP, OpenStack Object Storage, and node/storage workers through a queue
User Manager
ATAoE / iSCSI
Host Machines: workers that spawn instances
Glance: HTTP + OpenStack Object Storage for server images OpenStack Compute
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Hardware Requirements
OpenStack is designed to run on industry standard hardware, with flexible configurations
Computex86 Server (Hardware Virt. recommended)Storage flexible (Local, SAN, NAS)
Object Storagex86 Server (other architectures possible)Do not deploy with RAID (can use controller for cache)
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Why is OpenStack important?
Open eliminates vendor lock-in
Working together, we all go faster
Freedom to federate, or move between clouds
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What is Chef?
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Chef enables Infrastructure as Code
Manage configuration as idempotent Resources.
Put them together in Recipes.
Track it like Source Code.
Configure your servers.
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At a High Level
Library for configuration management
Configuration management system
Systems integration platform
API for your entire Infrastructure
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Fully automated Infrastructure
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Principles
IdempotentData-drivenSane defaultsHackabilityTMTOWTDI
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Open Source and Community
Apache 2 licensed
Large and active community
Over 300 individual contributors (60+ corporate)
Community is Important!
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How does it Work?
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How does it Work?Miracles!
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How does it Work?Miracles!(no really)
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Chef Client runs on your System
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Chef Client runs on your System
ohai!
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Clients talk to the Chef Server
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The Opscode Platform is a hosted Chef Server
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We call each system you configure a
Node
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Nodes have Attributes{ "kernel": { "machine": "x86_64", "name": "Darwin", "os": "Darwin", "version": "Darwin Kernel Version 10.4.0: Fri Apr 23 18:28:53 PDT 2010; root:xnu-1504.7.4~1/RELEASE_I386", "release": "10.4.0" }, "platform_version": "10.6.4", "platform": "mac_os_x", "platform_build": "10F569", "domain": "local", "os": "darwin", "current_user": "mray", "ohai_time": 1278602661.60043, "os_version": "10.4.0", "uptime": "18 days 17 hours 49 minutes 18 seconds", "ipaddress": "10.13.37.116", "hostname": "morbo", "fqdn": "morbomorbo.local", "uptime_seconds": 1619358 }
Kernel info!
Platform info!
Hostname and IP!
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Nodes have a Run List
What Roles and Recipes to Apply in Order
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Nodes have Roles
webserver, database, monitoring, etc.
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Roles have a Run List
What Roles and Recipes to Apply in Order
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name "webserver"description "Systems that serve HTTP traffic"
run_list( "role[base]", "recipe[apache2]", "recipe[apache2::mod_ssl]")
default_attributes( "apache" => { "listen_ports" => [ "80", "443" ] })
override_attributes( "apache" => { "max_children" => "50" })
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name "webserver"description "Systems that serve HTTP traffic"
run_list( "role[base]", "recipe[apache2]", "recipe[apache2::mod_ssl]")
default_attributes( "apache" => { "listen_ports" => [ "80", "443" ] })
override_attributes( "apache" => { "max_children" => "50" })
Can includeother roles!
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Chef manages Resources on Nodes
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Declare a description of the state a part of the node should be in
Resources
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package "apache2" do version "2.2.11-2ubuntu2.6" action :installend
template "/etc/apache2/apache2.conf" do source "apache2.conf.erb" owner "root" group "root" mode 0644 action :createend
Declare a description of the state a part of the node should be in
Resources
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‣ Have a type package "apache2" do version "2.2.11-2ubuntu2.6" action :installend
template "/etc/apache2/apache2.conf" do source "apache2.conf.erb" owner "root" group "root" mode 0644 action :createend
Declare a description of the state a part of the node should be in
Resources
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‣ Have a type
‣ Have a name
package "apache2" do version "2.2.11-2ubuntu2.6" action :installend
template "/etc/apache2/apache2.conf" do source "apache2.conf.erb" owner "root" group "root" mode 0644 action :createend
Declare a description of the state a part of the node should be in
Resources
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‣ Have a type
‣ Have a name
‣ Have parameters
package "apache2" do version "2.2.11-2ubuntu2.6" action :installend
template "/etc/apache2/apache2.conf" do source "apache2.conf.erb" owner "root" group "root" mode 0644 action :createend
Declare a description of the state a part of the node should be in
Resources
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‣ Have a type
‣ Have a name
‣ Have parameters
‣ Take action to put the resource in the declared state
package "apache2" do version "2.2.11-2ubuntu2.6" action :installend
template "/etc/apache2/apache2.conf" do source "apache2.conf.erb" owner "root" group "root" mode 0644 action :createend
Declare a description of the state a part of the node should be in
Resources
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Resources take action through Providers
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Recipes are lists of Resources
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Evaluate and apply Resources in the order they appear
Recipes
package "apache2" do version "2.2.11-2ubuntu2.6" action :installend
template "/etc/apache2/apache2.conf" do source "apache2.conf.erb" owner "root" group "root" mode 0644 action :createend
1
2
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Order Matters
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Recipes are just Ruby!
extra_packages = case node[:platform] when "ubuntu","debian" %w{ ruby1.8 ruby1.8-dev rdoc1.8 ri1.8 libopenssl-ruby } end
extra_packages.each do |pkg| package pkg do action :install endend
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Cookbooks are packages for Recipes
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Cookbooks
Distributable, shareable
comunity.opscode.com
Infrastructure as Code
Versioned
Hundreds
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Cookbooks
Recipes
Files
Templates
Attributes
Metadata
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Data bags store arbitrary data
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A user data bag item...% knife data bag show users mray{ "comment": "Matt Ray", "groups": "sysadmin", "ssh_keys": "ssh-rsa SUPERSEKRATS mray@morbo", "files": { ".bashrc": { "mode": "0644", "source": "dot-bashrc" }, ".emacs": { "mode": "0644", "source": "dot-emacs" } }, "id": "mray", "uid": 7004, "shell": "/usr/bin/bash" }
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Environments manage versioned infrastructure
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Copyright © 2011 Opscode, Inc - All Rights Reserved
Command-line API utility, Knife
46http://www.flickr.com/photos/myklroventine/3474391066/
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$ knife search node 'platform:ubuntu'
search(:node, ‘platform:centos’)
$ knife search role 'max_children:50'
search(:role, ‘max_children:50’)
$ knife search node ‘role:webserver’
search(:node, ‘role:webserver’)
$ knife users ‘shell:/bin/bash’
search (:users, ‘group:sysadmins’)
Search
‣CLI or in Ruby
‣Nodes are searchable
‣Roles are searchable
‣Recipes are searchable
‣Data bags are searchable
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HOW TO: Turn Racks of Standard Hardware Into a
Cloud with OpenStack
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What Works Today?
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Compute (Nova)
Single machine installation
‣ Role: nova-single-machine
‣ MySQL, RabbitMQ
‣ Nova-(api|scheduler|network|objectstore|compute)
Multi-machine
‣ Role: nova-multi-controller (1)
‣ Role: nova-multi-compute (N)
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name "nova-single-machine-install"
description "Installs everything required to run Nova on a single machine"
run_list( "role[nova-multi-controller]", "role[nova-multi-compute]" )
Role: nova-single-machine
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name "nova-multi-controller"
description "Installs requirements to run the Controller node in a Nova cluster"
run_list( "role[nova-support-server]", "role[nova-head]", "role[nova-cloud-controller]", "role[nova-super-user-setup]" )
Role: nova-multi-controller
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name "nova-multi-compute"
description "Installs requirements to run a Compute node in a Nova cluster"
run_list( "recipe[nova::compute]")
Role: nova-multi-compute
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What does this look like?
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Crowbar
‣Codename for the OpenStack installer from Dell
‣Dell is releasing this under the Apache 2 license
‣Extension of the Chef server
‣Jointly developed by Dell, Rackspace and Opscode
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Crowbar - What does it Do?
‣Crowbar is a PXE state machine
‣ starts with bare metal hardware
‣manages and configures BIOS and network settings
‣ network boot and installation
‣ nodes are configured with Chef
‣ deploys OpenStack, could be used for anything
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$ knife cookbook upload -a$ knife cookbook list$ rake roles$ knife role list$ knife node list
OpenStack Installation
‣Cookbooks uploaded
‣Roles uploaded
‣Nodes ready
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name "nova-ami-urls"description "Feed in a list URLs for AMIs to download"default_attributes( "nova" => { "images" => ["http://192.168.11.7/ubuntu1010-UEC-localuser-image.tar.gz”] } )
$ knife role from file roles/nova-ami-urls.rb
AMIs
‣Use an existing AMI
‣Update URL to your own
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$ knife node run_list add crushinator.localdomain "role[nova-ami-urls]" { "run_list": [ "role[nova-ami-urls]" ]}
$ knife node run_list add crushinator.localdomain "role[nova-single-machine-install]"{ "run_list": [ "role[nova-ami-urls]" "role[nova-single-machine-install]", ]}
Assign the Roles
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mray@ubuntu1010:~$ sudo chef-client[Fri, 25 Feb 2011 11:52:59 -0800] INFO: Starting Chef Run (Version 0.9.12)...[Fri, 25 Feb 2011 11:56:05 -0800] INFO: Chef Run complete in 5.911955 seconds[Fri, 25 Feb 2011 11:56:05 -0800] INFO: cleaning the checksum cache[Fri, 25 Feb 2011 11:56:05 -0800] INFO: Running report handlers[Fri, 25 Feb 2011 11:56:05 -0800] INFO: Report handlers complete
chef-client
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nova@$ nova-manage service list
nova@$ euca-describe-images
nova@$ euca-run-instances ami-h8wh0j17 -k mykey -t m1.tiny
nova@$ euca-describe-instances
nova@$ ssh -i mykey.priv [email protected]
Linux i-00000001 2.6.35-24-virtual #42-Ubuntu SMP Thu Mar 30 05:15:26 UTC 2011 x86_64 GNU/LinuxUbuntu 10.10
Welcome to Ubuntu!<SNIP>See "man sudo_root" for details.
ubuntu@i-00000001:~$
The Moment of Truth
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How Did We Get Here?
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Forked from Anso Labs’ Cookbooks
Bootstrapped by Opscode
Chef Solo/Vagrant installs for Developers
http://github.com/ansolabs/openstack-cookbooks
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Who’s involved so far?
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What’s Next?
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Nova needed enhancements
Pluggable/Modular Roles
‣Database
‣ObjectStore
‣Network
‣Virtualization
Swift and Glance integration
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Dashboard
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Knife
‣ http://github.com/opscode/knife-openstack
‣ Nova has same API as Amazon
‣ Fog supports OpenStack already
‣knife openstack server create ‘role[base]’ -i ami-a403f6xd -f m1.micro -A “OpenStack instance”
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Object Storage (Swift)
‣ Recipes originated from Anso Labs’ repository
‣Will be managed with Chef and Crowbar
‣ Included in the ‘bexar’ branch
‣ Untested so far (Cactus will tackle)
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Image Registry (Glance)
‣ Recipes originated from Anso Labs’ repository
‣Will be managed with Chef and Crowbar
‣ Included in the ‘bexar’ branch
‣ Untested so far (Cactus!)
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Scaling changes how we deploy OpenStack!
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Deployment Scenarios
‣ Single machine is special case of multi-install
‣ Controller + Compute nodes is a known quantity for small installations
‣ Nova + Swift + Glance in large installations
‣ Services separated and HA configurations supported
‣ Documentation and Chef Roles will be the solution
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Cactus, Diablo, ...
Development continues...
Branches for each stable release
Design Summit later this month
Design Summit in the Fall
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Rackspace Cloud Builders
Commercial support and Training for OpenStack
‣ Opscode
‣ Dell
‣ Equinix
‣ Cloudscaling
‣ Citrix
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Get Involved!
https://github.com/mattray/openstack-cookbooks/tree/bexar
http://lists.openstack.org
http://lists.opscode.com
#chef on irc.freenode.net
#openstack on irc.freenode.net
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