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OpenStack Heat
1.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. OpenStack Heat OS:: cloud :: orchestrator Kanagaraj Manickam (kanagaraj.manickam@hp.com) Sirushti Murugesan (sirushti.murugesan@hp.com) Aug 8th 2015 OpenStack India Day @ Bangalore
2.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.2 Agenda • Cloud application in OpenStack • Heat • Introduction • Architecture • Resource plugins • Templates • Heat Engine • Problems with heat-engine • Convergence • Convergence blueprints & future • Q&A.
3.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.3 Cloud application in OpenStack OpenStack = Cloud operating system • Platform for operator, to setup the cloud(s) on the datacenter(s). • Platform for user, to create and manage the life-cycle of instances, volumes, networks, applications, etc. • Cloud Application a stack consists of instances, volumes, networks, software & configuration
4.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. OpenStack Heat
5.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.5 Introduction An orchestration service to create and manage the lifecycle of cloud application • How to model the cloud application deployment (in YAML/JSON)? Heat provides Template (HOT & CFN) • How to customize the cloud application Heat provides Parameters & environments • How to create and manage the cloud application? Heat provides Stack • How to manage the cloud application scalability? Heat provides Auto-scaling • How to configure the cloud application? Heat provides Software-Configuration • How to model the cloud application element such as instances, volumes, etc ? Heat provides Resource (as resource plug-in) • How to track the progress of life-cycle operations ? Heat provides Events
6.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.6 Architecture Heat internals Heat- engine Heat- engine Heat- engine nova cinder neutron …. Heat- engineHeat-api Heat- engine Heat- cfnapi Environment Heat Db HOT Template CFN Template RPCmessagebus Heat- engine
7.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.7 Resource plugin Models OpenStack elements • Integrates the OpenStack services with heat for orchestrating their elements as part heat stack. • Has its own namespace like Cloud Provider :: Service :: Resource • Examples: OS::Nova::Server, OS::Cinder::Volume • Supports following Life-cycle operations • Create / Update / Delete • Snapshot / restore • Abandon / adopt
8.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.8 Template and resources Capture the declarative model of stack 10 GB/dev/vdb my_instance: type: OS::Nova::Server properties: key_name: kp1 image: cirros-0.3.3 flavor: m1.small networks: [private] my_vol: type: OS::Cinder::Volume properties: size: 10 GB vol_att: type: OS::Cinder::VolumeAttachment properties: instance_uuid: { get_resource: my_instance } volume_id: { get_resource: my_vol } mountpoint: /dev/vdb heat_template_version: 2015-04-15 description: > Cirros instance created with 10 GB volume parameters: key_name: type: string description: Name of an existing key pair for instance constraints: - custom_constraint: nova.keypair description: Must name a public key (pair) known to Nova flavor: image: network: vol_size: resources: my_instance: …. my_vol: …. vol_att: …. outputs: instance_networks: description: The IP addresses of the deployed instance value: { get_attr: [my_instance, networks] }
9.
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Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. Heat-Engine
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Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.10 Problems in heat-engine Heat-engine operates at STACK level As Stack is processed in a single heat-engine, irrespective of available heat-engines: • Capacity is an bottle-neck: – when exceeds engines RAM and CPU threshold • Reliability is compromised: – Engine fails, then stack is FAILED, but user can't recover engine failure, suppose operators. • Concurrent-update is not available – Once stack is locked by a heat-engine, it unlocks only after stack is provisioned. User end-up in waiting, till stack completes. In addition, After stack provisioning, On any underlying cloud infra failure, causes stack as unstable – KVM is down – Network connection is interrupted – Etc.
11.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.11 Convergence Heat-engine Heat-engine operates at RESOURCE level • Stack lock is removed (and resource level lock is introduced), helps concurrent updates • When one engine fails, in-progress stacks are taken care by other engines automatically • Provisioning larger stack became the reality, as more than one heat-engine started to process. • Enabled by : convergence_engine = true in heat.conf Continuous observer • Being designed to take care of stack from underlying cloud infrastructure failures.
12.
© Copyright 2014
Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.12 Convergence Heat-engine How X stack is converged
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Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.13 Convergence Blueprints A journey from Juno->Kilo->Liberty Activity Release Owners https://blueprints.launchpad.net/heat/+spec/convergence Juno Clint Byrum https://blueprints.launchpad.net/heat/+spec/convergence-engine Juno Clint Byrum https://blueprints.launchpad.net/heat/+spec/convergence-continuous-observer Juno Clint Byrum https://blueprints.launchpad.net/heat/+spec/convergence-observer Juno Clint Byrum Convergence-engine PoC on top of upstream heat codebase Juno, Kilo Anant Patil, Rakesh HS, Sirushti Murugesan, Ishant Tyahi, Unmesh Gurjar, Vishnusaran Murugan, Kanagaraj Manickam Convergence-engine PoC Kilo Zane Bitter Convergence-engine blueprint is converted into small blueprints based on above PoC Kilo Zane Bitter https://blueprints.launchpad.net/heat/+spec/convergence-config-option Kilo Peter Razumovsky https://blueprints.launchpad.net/heat/+spec/convergence-resource-table Kilo Sergey Kraynev https://blueprints.launchpad.net/heat/+spec/convergence-message-bus Kilo Kanagaraj Manickam https://blueprints.launchpad.net/heat/+spec/convergence-push-data Kilo Sergey Kraynev https://blueprints.launchpad.net/heat/+spec/convergence-stack-data Kilo Anant Patil https://blueprints.launchpad.net/heat/+spec/convergence-concurrent-workflow Liberty Angus Salkeld https://blueprints.launchpad.net/heat/+spec/convergence-graph-progress Liberty Rakesh H S https://blueprints.launchpad.net/heat/+spec/convergence-lightweight-stack Liberty Sirushti Murugesan https://blueprints.launchpad.net/heat/+spec/convergence-prepare-traversal Liberty Rakesh H S https://blueprints.launchpad.net/heat/+spec/convergence-check-workflow Liberty Sirushti Murugesan https://blueprints.launchpad.net/heat/+spec/convergence-resource-locking Liberty Ishant Tyagi https://blueprints.launchpad.net/heat/+spec/convergence-rollback Liberty Anant Patil https://blueprints.launchpad.net/heat/+spec/convergence-resource-replacement Liberty Angus Salkeld https://blueprints.launchpad.net/heat/+spec/convergence-resource-operations Liberty Kanagaraj Manickam Enable Convergence-engine-functional testing in zuul gate Liberty Heat Community Convergence-engine Functional-testing and bug fixing Liberty Heat Community
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Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.14 Convergence Future A journey from Liberty ->Mitaka Activity Release Core logic is completed, and remaining work to be completed like Suspend, resume, timeout, etc Liberty Convergence-observer investigation, design and submit the blueprints Liberty Convergence-continuous-observer investigation, design and submit the blueprints Liberty Implement the convergence-observer Mitaka Implement the convergence-continuous-observer Mitaka
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Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.15 Consumers Actively uses heat for orchestration • OpenStack services • TipleO https://github.com/openstack/tripleo-heat-templates • Magnum https://github.com/openstack/magnum/tree/master/magnum/templates • Solum https://wiki.openstack.org/wiki/Solum • Sahara https://wiki.openstack.org/wiki/sahara • HP products • HDP http://www8.hp.com/us/en/cloud/helion-devplatform-overview.html • NFV http://www8.hp.com/in/en/cloud/nfv-overview.html
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Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.16 References Knowledge base • Wiki: https://wiki.openstack.org/wiki/Heat • Template guide: http://docs.openstack.org/developer/heat/template_guide/hot_spec.html • Developer guide: http://docs.openstack.org/developer/heat/ • Resource plugin guide: http://docs.openstack.org/developer/heat/pluginguide.html#putting-it-all-together • Sample heat-templates: https://github.com/openstack/heat-templates
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Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. Q & A
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Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. Thank you
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