OpenStack Quantum: Cloud Carrier Summit 2012
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OpenStack Quantum: Cloud Carrier Summit 2012

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Presenting on OpenStack Quantum for cloud operators, presented at the Cloud Carrier Summit 2012.

Presenting on OpenStack Quantum for cloud operators, presented at the Cloud Carrier Summit 2012.

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    OpenStack Quantum: Cloud Carrier Summit 2012 OpenStack Quantum: Cloud Carrier Summit 2012 Presentation Transcript

    • Intro to OpenStack Quantum for Cloud Operators Dan Wendlandt dan@nicira.com Openstack Quantum Hacker & Project Team Lead twitter - danwendlandt
    • Caveats• Quantum is young: there are lots of things that it WILL do, but doesn’t do yet.• Target of talk is Cloud Operators that would deploy Quantum, not vendors.• Not “OpenStack vs. X” talk.
    • Outline• What is OpenStack?• Why Quantum?• What is Quantum? – API Overview – Plugin Architecture• Use Case: Nicira NVP Plugin – Network virtualization model – Live Demo (why not?)• Questions
    • What is OpenStack?
    • What is OpenStack? “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.” Allow anyone to automate IT provisioning in a public or private IaaS cloud that meets (and exceeds) the capabilities of Amazon EC2.
    • Why is Openstack Compelling?Incredible cross-industry mindshare and momentum Real resource commitments from many companies:200+ unique developers from 55+ companies in last 6-month release
    • Who is Deploying OpenStack? Hosting Providers Carrier / Telco Large Enterprise GovernmentMore information: http://www.openstack.org
    • 10,000 ft (3 km) Architecture View• Each service is a separate piece of software, includes: – A tenant-facing API that exposes logical abstractions for consuming/monitoring the service. – Pluggable backend to choose “best of breed’ implementations (open source or vendor proprietary). Generic OpenStack APIs Operator Selected Backends Compute API KVM XenServer Network API VLANs + IPtables Nicira NVPTenant(GUI, CLI, A Storage API EMC NFSPI code)
    • Why Quantum?
    • In the beginning..*-as-a-Service Capability OpenStack Service Compute Nova Swift (Objects) Storage Glance (Images) Network ?
    • Why Quantum?• Networking was sub-component of OpenStack Compute layer (Nova).• Two Key Problems: #1: No tenant control of networking. #2: Limited technology “baked in” to design.
    • Problem #1: No Tenant ControlTo move enterprise apps to thecloud, tenants want to “copy andpaste” their existing data centernetwork topologies: – Ability to create “multi-tier” networks (e.g., web tier, app tier, db tier) – Control over IP addressing. – Ability to insert and configure your “You can have any color as long as its black.“ own services (e.g., firewall, IPS) - Henry Ford about the Model-T – VPN/Bridge to remote physical hosting or customer premises (“cloudbursting”).
    • Why Quantum? Reason #1 On-demand Enterprise-Class Networking• Tenants can: – create multiple private networks – control IP addressing (bring your own!). – monitor basic network status.• Quantum API extensions provide: – Advanced control + visibility: Security policies, Quality-of- Build rich Service, Monitoring + networks, customize Troubleshooting. d to tenant needs. – Advanced Network Services: routers, Firewalls, VPN, IDS, etc.
    • Problem #2: Technology Limitations• Cloud puts new stresses on networks: – High-density multi-tenancy, massive scale – Strict uptime requirements. – Integrate with legacy hosting environments / remote data centers. – VM mobility Who needs private – On-demand service insertion networks?• But Nova was limited to basic Trunking all VLANs VLAN model + Linux IPtables. is a great idea! - Stone Age Man
    • Why Quantum? #2: Leveraging Advanced Technologies• New networking technologies are emerging to try and tackle these challenges. – Overlay tunneling: VXLAN, NVGRE, STT – Software-defined Networking (SDN) / OpenFlow – VPN-based solutions (e.g., E-VPN). – L2 Fabric solutions: FabricPath, Qfabric, etc. – [ insert other solution here ]• Quantum provides a “plugin” mechanism to enable different technologies (more later). Use advanced technologies to reach new heights.• Choice is a good thing!
    • Finally, Network-as-a-Service!*-as-a-Service Capability OpenStack Service Compute Nova Swift (Objects) Storage Glance (Images) Network Quantum
    • Why Quantum?Quantum enables advanced network “engines”…. that let you leave Amazon VPC in the dust…
    • What is Quantum?
    • Quantum Architecture Generic OpenStack APIs Operator Selected Backends Compute API XenServer Network API Nicira NVP Tenant Tools (GUI, CLI, AP Storage API EMC I code)An eco-system of A generic tenant API A “plugin” architecturetools that leverage to create and with different back-endthe Quantum API. configure “virtual “engines” networks”
    • Basic API Abstractions VM1 VM2 virtual serverNova 10.0.0.2 10.0.0.3 virtual interface (VIF) virtual portQuantum Net1 L2 virtual network 10.0.0.0/24 “virtual networks” are fundamentally multi-tenant, just like virtual servers.
    • Quantum Model: Dynamic Network Creation + Association TenantA-VM2 TenantA-VM3 TenantA-VM1 10.0.0.3 9.0.0.2 10.0.0.2 9.0.0.3 Tenant-A Net1 Tenant-A Net2 10.0.0.0/24 9.0.0.0/24 Public Net88.0.0.0/18 • Tenant can use API to create many networks. • When booting a VM, define which network(s) it should connect to. • Can even plug-in instances from other services (e.g., a load-balancing service).
    • Quantum API Extensions• Enables innovation in virtual networking. – Tenants can query API to programmatically discover supported extensions. – Overtime, extensions implemented by many plugins can become “core”.• Add properties on top of existing network/port abstractions: – QoS/SLA guarantees / limits – Security Filter Policies – port statistics / netflow• New Services – L3 forwarding, ACLs + NAT (“elastic” or “floating” IPs) – VPN connectivity between cloud and customer site, or another cloud datacenter.
    • Example: Quantum + Extensions TenantA-VM2 TenantA-VM3 TenantA-VM1 10.0.0.3 10.0.1.2 10.0.0.2 9.0.0.3 TenantA-VM4 Tenant-A Net1 Tenant-A Net2 172.16.0.30 10.0.0.0/24 10.0.1.0/24 Tenant-A Net3 172.16.0.0/24 Not VPN necessarily a Tenant-A On VM! Premise Net Public Net172.16.0.0/24 88.0.0.0/18
    • Quantum Architecture Generic OpenStack APIs Operator Selected Backends Compute API XenServer Network API Nicira NVP Tenant Tools (GUI, CLI, AP Storage API EMC I code)An eco-system of A generic tenant API A “plugin” architecturetools that leverage to create and with different back-endthe Quantum API. configure “virtual “engines” networks”
    • Quantum “Plugins”• Different plugin “engines” present different trade-offs: – Free vs. Commercially Supported – Advanced Features (exposed as API extensions) – Scalability – High Availability (control & data plane) – Hypervisor Compatibility – Network HW Compat (vendor specific? Allow L3 scale-out?) – Manageability / troubleshooting• Cloud Operators weigh trade-offs, choose a plugin.• Note: Back-end technology hidden behind logical core API – Example: VLANs vs. tunneling
    • Quantum Architecture (generic)API Clients Quantum Service Backend X Quantum API Tenant Create-net Scripts . Horizon . Plugin GUI . X Create- Orchestration Physical port virtual switch Code Network Nova Compute API Extensions Interfaces from Nova plug into a switch manages by Uniform API the Quantum plugin. for all clients
    • Vendor Quantum PluginsBasic open source plugins based on Open vSwitch andLinux Bridge exist.The following vendors have publicly stated that they already haveor are developing a Quantum plugin (others exist as well)
    • Quantum Project Releases• Incubation release (OpenStack Essex, April ‘12) – v1 API, base L2 API abstractions – 5 plugins available. – In production at early adopters.• First “core” release (OpenStack Folsom, Oct. ‘12) – v2 API, with L2 + L3 API abstractions – Additional plugins available. – Quantum becomes “default” networking option for OpenStack.
    • Quantum Case Study:Quantum Plugin for Nicira NVP
    • Nicira NVP Network Virt Model• Edge virtualization in hypervisor (open vswitch) with overlay tunneling decouples logical + physical topology. – Flexibility designing Fabric (requires only IP unicast) • Can use traditional design, or Fat-tree/Clos • No requirement for L2 adjacency, large MAC/ACL tables in HW – Place/move any workload anywhere in the DC.• Control Plane work is Distributed across nodes within the NVP control cluster to provide scalability & fault tolerance.• Quantum Tenants can dynamically create/modify/monitor rich networks abstractions via Quantum API.
    • Quantum w/NVP ArchitectureAPI Clients Quantum Service Nicira NVP Controller Quantum NVP Cluster NVP NVP NVP API Controller handles NO Plugin Controller Controller dataplane Tenant Create-net Cluster traffic. Scripts Create- . net . . Horizon . . Create-portOrchestration . Code Create- L3 Fabric OVS API port Extensions Nova Compute
    • Live Demo Use Case: Rich Network topologies used within Nicira’s internal OpenStack + NVP cloud. controller1 HV1 controller1 HV2 controller1Windows Data Data Mgmt 1 Net 2 Net NetManager GW1 External Net External Host
    • Thanks! Questions? Dan Wendlandt dan@nicira.comOpenStack Quantum Hacker & Project Team Lead twitter - danwendlandt