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OpenStack in Action 4! Mark McCLain - From Segments to Services a Dive into OpenStack Networking
The document discusses the challenges of cloud networking, such as high-density multi-tenancy and on-demand provisioning, and presents solutions like network virtualization and software-defined networking. It explains the architecture of OpenStack networking, including core APIs, backend plugins, and advanced services like load balancing and VPN. Additionally, it provides resources for contributions and further information on OpenStack networking.
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OpenStack in Action 4! Mark McCLain - From Segments to Services a Dive into OpenStack Networking
- 1. OpenStack Networking Mark McClain OpenStackNetworking Program Technical Lead mark.mcclain@dreamhost.com
- 2. Challenges in theCloud • High-density multi-tenancy – But VLANs have trouble scaling • On-demand provisioning – But traditional network solutions have interfaces designed for manual configuration. • Need to place / move workloads were capacity exists – But network state (e.g., IP address) is tied to a particular location © Malcolm Leman | Dreamstime.com
- 3. Tackling these challenges – Networkvirtualization – Overlay tunneling: VXLAN, GRE, STT – Software-defined Networking (SDN) / OpenFlow – L2 Fabric solutions – ???
- 4.
- 5. Basic Abstractions Nova VM2 10.0.0.2 VM1 10.0.0.2 virtual server virtualinterface (VIF) virtual port Neutron L2 virtual network Net1 10.0.0.0/24 virtual subnet
- 6. Using the API... VM1 10.0.0.2 VM2 VM3 172.16.77.1 10.0.0.2/172.16.77.2 TenantNet1 192.168.0.0/24 Tenant Net2 172.16.77.0/24 Router Public Net 10.0.0.0/8
- 7. Multi-Project VM2 10.0.0.2/172.16. 77.2 VM1 10.0.0.2 VM3 VM1 10.0.0.2 172.16.77.1 Tenant A Net1 192.168.0.0/24 VM2 10.0.0.2/172.16. 77.2 TenantB Net2 172.16.77.0/24 Router Router Public Net 10.0.0.0/8 172.16.77.1 Tenant B Net1 192.168.0.0/24 Tenant A Net2 172.16.77.0/24 VM3
- 8. Architecture Generic OpenStack APIs OperatorSelected Backends KVM ML2 Plugin Ceph Compute API Network API Tenant Tools (GUI, CLI, API code) Storage API
- 11. Neutron CLI Horizon WebUI Heat - Orchestration Other tools Core Neutron API API Extensions Authentication Authorization via OpenStack keystone Neutron Pluggable Backend layer Modular Layer 2 Plugin Nova Compute Open vSwitch Nova Compute Open vSwitch Nova Compute Open vSwitch API Tools
- 12. Neutron Plugins Open vSwitch/ Linux Bridge Ryu OpenFlow Controller
- 13. Common Features Support foroverlapping IPs DHCP Includes custom port options Floating IPs
- 14. Security Groups Supports OverlappingIPs Handles VMs with multiple NICs Ingress / Egress rules IPv6 matching Plugins can offload http://www.flickr.com/photos/mikebaird/2354116406/
- 15. Metadata Simplified Configuration Supports OverlappingIPs Non-routed networks
- 16. Modular Layer 2 DriverBased Combines OVS and Linuxbridge Plugins Other Mechanism Drivers Available Arista, Cisco, Hyper-V, Tail-F NCS
- 17.
- 18. Load Balancing asService Multiple Implementations Open Source - HAProxy Proprietary Drivers Available
- 19. VPN as aService Site-to-Site IPSec OpenSwan Reference Implementation
- 20. Firewall as aService Stateless filtering at the edge Vendor drivers available Preview available in Havana
- 21.
- 22. Horizon Select NICs whenbooting
- 23.
- 24. How to Contribute Code: https://github.com/openstack/neutron Blueprintsand Bugs http://launchpad.net/neutron
- 25. More Information Installation andAdmin Manual http://docs.openstack.org/trunk/openstacknetwork/admin/content/
- 26. Questions? Mark McClain OpenStack NetworkingCore Team Member and PTL mark.mcclain@dreamhost.com