Heat is a project that provides orchestration of multiple cloud applications and resources for OpenStack. It allows users to define infrastructure in templates and provision resources like instances, volumes, and security groups. Key features include integration with other OpenStack projects, compatibility with AWS CloudFormation templates and API, and advanced services like auto-scaling and high availability. The project is actively developed by an open source community with the goal of becoming part of the OpenStack core.

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2. Agenda
• Overview
• Architecture
• Bootstrap Methods
• Heat JEOS
• Oz
• CloudFormation Scripts
• Template Dissection
• Advanced Services
• Status & Roadmap
• Next Steps Copyright © PicGifs.com - 2008 / 2011 - All rights reserved
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3. Overview
• REST API to orchestrate multiple composite cloud applications
• AWS CloudFormation implementation for OpenStack API
• Orchestrates apps, called as stack, by executing a CloudFormation template
• Allows creation of resource types - instances, floating IPs, volumes, security
groups, users, etc.
• Some advanced services - HA, auto-scaling and nested stacks
• Compatible with AWS CloudFormation legacy (CLI based on boto and compatible
API)
• Integrates well with Puppet and Chef
• OpenStack style project
– Tight integration with other OpenStack projects
– Python 2, matching OpenStack design principals
– ASL V2 License and hosted on Github
– Integrated with Stackforce (OpenStack workflow gerrit/jenkins)
• Started in March, 2012
• Active community of 9 developers (All from Red Hat)
@sdake
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4. Architecture
Source: http://heat-api.org
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5. User Interface
Source: http://heat-api.org
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6. Heat Engine
Source: http://heat-api.org
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7. Bootstrap Methods
• Golden Image – everything some scratch
• CloudFormation + cloud-init as startup script
• CloudFormation metadata + helper scripts
• Use Chef or Puppet
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8. Heat JEOS
• Build Just Enough Operating System images
• Will be setup with cloud-init and cfn-tools
• Optionally, register with glance
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9. Oz… (The wizard!)
• Automated installation of guest OS
• Create TDL files to feed as input into the
building process
SAMPLE TDL file:
<template>
<name>NAME</name>
<os>
<name>DISTRO</name>
<version>VERSION</version>
<arch>ARCH</arch>
<install type='iso'>
<iso>PATH TO ISO</iso>
</install>
</os>
<description>DESCRIPTION</description>
</template>
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10. CloudFormation helper scripts
• cfn-init - Reads instance resource, installs packages,
and starts services
• cfn-signal - Waits for an application to be ready before
continuing with stack creation
• cfn-hup - Handle updates to metadata and execute
custom hooks
• cfn-get-metadata - Retrieve all metadata defined for a
resource or a specific key or subtree of the resource's
metadata
• cfn-update-stack - Updates metadata content
• Stack synchronization and rollback through
WaitCondition
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11. Template Dissection
• Templates - JSON files which define your stack
• Stacks - Collection of resources to manage together
• Parameters - Values defined in the template
• Mappings - Conditional parameter values
• Pseudo Parameters – Pre declared values
• Resources – Features which declare a stack
• Resource Properties – Values for resources
• References – Any named item
• Intrinsic Functions – Accomplish complex operations
• Outputs – Return values back to the template user
Source: AWS CloudFormation Documentation
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12. Advanced Services
• Not just a resource brokering service
• Autoscaling
• CloudWatch
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13. Current Status
• Integration with Common, Glance, Keystone,
Swift, and Nova
• Implementation of the AWS CloudFormation API
• Usable implementation of AWS CloudWatch API
• Complete implementation for all non-VPC related
resource types in CloudFormation
• Instance and application high availability
• Autoscaling
• Nested Stacks
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15. Roadmap
G Release F Release
• Project Incubation • Hardening of source tree
• Optimizing project governance to match • Improving source tree to
OpenStack standards meet OpenStack design
• Complete implementation of AWS
principles
• CloudWatch API, contributing
appropriate technology into Ceilometer
• Promotion to OpenStack
• Complete integration with Quantum, core
providing complete VPC feature
coverage
TOSCA - Topology and Orchestration Specification for Cloud Applications
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16. Where to go
• http://wiki.openstack.org/Heat
• http://heat-api.org
• https://github.com/heat-api/heat
– Code, Wiki, Tracker
• References
– http://docs.amazonwebservices.com/AWSCloudFormation/lates
t/APIReference/API_CreateStack.html
– http://docs.amazonwebservices.com/AWSCloudFormation/lates
t/UserGuide/create-stack.html
– http://docs.amazonwebservices.com/AWSCloudFormation/lates
t/UserGuide/aws-template-resource-type-ref.html
– http://www.oasis-
open.org/committees/tc_home.php?wg_abbrev=tosca
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17. Related Projects
• http://wiki.openstack.org/Donabe
– multi-tier Application Container Service
• http://wiki.openstack.org/DatabaseAsAService
– could be used to provide AWS::RDS::DBInstance
• http://wiki.openstack.org/QueueService
– could be used to provide AWS::SQS::Queue
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18. OpenStack Summit 2012
• October 15th – 18th in San Diego
• http://www.openstack.org/summit/san-diego-
2012/openstack-summit-sessions/
• https://www.openstack.org/blog/2012/10/pa
rticipating-remotely-to-openstack-summit-
2012/
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19. Thank You
@kiranmurari
linkedin.com/in/kiranmurari
slideshare.net/kiranmurari
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