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Introduction to OpenStack Heat


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Introduction to OpenStack Heat

  1. 1. keeps the clouds up ;)
  2. 2. Agenda• Overview• Architecture• Bootstrap Methods• Heat JEOS• Oz• CloudFormation Scripts• Template Dissection• Advanced Services• Status & Roadmap• Next Steps Copyright © - 2008 / 2011 - All rights reserved13-10-2012 keeps the clouds up ;) 2
  3. 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) @sdake13-10-2012 keeps the clouds up ;) 3
  4. 4. Architecture Source: http://heat-api.org13-10-2012 keeps the clouds up ;) 4
  5. 5. User Interface Source: http://heat-api.org13-10-2012 keeps the clouds up ;) 5
  6. 6. Heat Engine Source: http://heat-api.org13-10-2012 keeps the clouds up ;) 6
  7. 7. Bootstrap Methods• Golden Image – everything some scratch• CloudFormation + cloud-init as startup script• CloudFormation metadata + helper scripts• Use Chef or Puppet13-10-2012 keeps the clouds up ;) 7
  8. 8. Heat JEOS• Build Just Enough Operating System images• Will be setup with cloud-init and cfn-tools• Optionally, register with glance13-10-2012 keeps the clouds up ;) 8
  9. 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>13-10-2012 keeps the clouds up ;) 9
  10. 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 resources metadata• cfn-update-stack - Updates metadata content• Stack synchronization and rollback through WaitCondition13-10-2012 keeps the clouds up ;) 10
  11. 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 Documentation13-10-2012 keeps the clouds up ;) 11
  12. 12. Advanced Services• Not just a resource brokering service• Autoscaling• CloudWatch13-10-2012 keeps the clouds up ;) 12
  13. 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 Stacks13-10-2012 keeps the clouds up ;) 13
  14. 14. 13-10-2012 keeps the clouds up ;) 14
  15. 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 Applications13-10-2012 keeps the clouds up ;) 15
  16. 16. Where to go••• – Code, Wiki, Tracker• References – t/APIReference/API_CreateStack.html – t/UserGuide/create-stack.html – t/UserGuide/aws-template-resource-type-ref.html – http://www.oasis- keeps the clouds up ;) 16
  17. 17. Related Projects• – multi-tier Application Container Service• – could be used to provide AWS::RDS::DBInstance• – could be used to provide AWS::SQS::Queue13-10-2012 keeps the clouds up ;) 17
  18. 18. OpenStack Summit 2012• October 15th – 18th in San Diego• 2012/openstack-summit-sessions/• rticipating-remotely-to-openstack-summit- 2012/13-10-2012 keeps the clouds up ;) 18
  19. 19. Thank You @kiranmurari keeps the clouds up ;) 19