Traffic Management In The Cloud
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Lightning Talk by Raja Srinivasan of Zeus at CloudCamp in the Cloud on Traffic Management In The Cloud
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Traffic Management In The Cloud
- 1. Traffic Management in the Cloud Raja Srinivasan Chief Cloud Evangelist Zeus Technology
- 2. © Zeus Technology 2008 Slide 2 Let’s buy load balancers
- 3. © Zeus Technology 2009 Slide 3 Taxonomy of Traffic Managers There’s a range of functionality: Layer 4 load balancers: basic packet redirection Layer 7 load balancers: understand HTTP, can apply some optimizations Intelligent Traffic Managers: Application proxies that can be programmed to manage traffic in many different ways
- 5. Perform SSL decryption(features and capabilities vary by product)
- 6. Layer 7 load balancers © Zeus Technology 2009 Slide 5 SSL Decryption DoS Protection TCP Offload Load Balancing Session Persistence SSL Encryption HTTP Multiplexing request Virtual Server (client connections) Pool(server connections) response Layer 7 load balancer Content Compression HTTP Caching TCP Offload Bandwidth Shaping A layer 7 load balancer understands HTTP (features and capabilities vary by product)
- 10. TrafficScript
- 11. Java ExtensionsSOAP-based Control API Event Handling API Web and CLI interface (CLI in version 5.2)
- 13. Routing
- 14. Performance and SLA management
- 16. Compliance
- 17. Visibility:
- 18. Monitoring
- 19. Analytics
- 21. Security:
- 22. Managing access to apps & services
- 23. Sharing data with trusted parties only
- 24. Application & transaction security
- 26. Transaction logging & reporting
- 27. Deployment:
- 28. On-premises or in the cloudCloud 1 Service 2 Application 1 Service 1 Private or public cloud Policy-based traffic management & control Integration with Cloud Management System Cloud Management System AppLogic / RightScale Enterprise Physical-Virtual-Cloud Slide 7 Slide 7 © Zeus Technology 2009
- 29. © Zeus Technology 2008 Slide 8 Rapid Application Changes The Cloud is all about “Rapid Application Deployment” Scenario: Your application has a fault You need to reduce the attack surface by sealing the bug from attackers
- 30. © Zeus Technology 2008 Slide 9 Rapid Application Changes TrafficScript $contentType = http.getResponseHeader( "Content-Type" ); if( $contentType != "text/html" ) break; $body = http.getResponseBody(); $body = string.regexSub( $body, "d{3}-d{2}-d{4}", "", "g" ); http.setResponseBody( $body );
- 31. © Zeus Technology 2008 Slide 10 Example - Gilt Groupe C C C C C C C C C C C C C C C C C C C C C C C C Basic Load Balancer 400 Ruby on Rails nodes
- 32. © Zeus Technology 2008 Slide 11 Gilt Groupe C C C C C C C C C C C C C C C C C C C C C C C C Cache Traffic Manager 400 Ruby on Rails nodes
- 33. Different cache rules for different content types Different versions of cached pages for different users Controlling Caching with TrafficScript © Zeus Technology 2008 Slide 12 TrafficScript $ct = http.getResponseHeader( "Content-Type" ); if(http.getResponseCode() >= 400 ) { cache.setExpiry( 5 ); } else if( startsWith( $ct, "image/" ) ) { cache.setExpiry( 60 ); } else { cache.setExpiry( 10 ); } “We found that with Content Caching and TrafficScriptTM, Zeus Traffic Manager is much more than a great load balancer – Zeus Traffic Manager is really an extension of our applications because of what it enables us to do.” Phong Nguyen, VP R&D, Founder, Gilt Groupe TrafficScript /*... Get user status from cookie... */ cache.setCacheKey( $status );
- 34. © Zeus Technology 2008 Slide 13 Managing your apps in the cloud Your ‘app’ becomes an infinitely divisible quantity
- 35. Smooth application upgrade process... Three application instances running © Zeus Technology 2008 Slide 14
- 36. Smooth application upgrade process... Clone one and direct developer users to it © Zeus Technology 2008 Slide 15
- 37. Smooth application upgrade process... Ready to deploy... Clone the new application version © Zeus Technology 2008 Slide 16
- 38. Smooth application upgrade process... Smoothly migrate users from ‘old’ to ‘new’ © Zeus Technology 2008 Slide 17
- 40. No interruption in service
- 41. No time pressure during testing
- 44. © Zeus Technology 2008 Slide 20 Let’s buy load balancers Where do I install this? How do I audit and track changes? Do I have access to the Data Center? Dev, test and production? What if I want to move my app?
- 45. Load Balancer Taxonomy Microsoft NLB Zeus Traffic Manager Zeus Load Balancer Commercial Software ClusterScale Netscaler VPX Pound Open Source Linux Virtual Server / IPVS HAProxy nginx PerlBal Kemp Cisco CSS Cisco ACE Hardware Load Balancers Barracuda Nortel / Alteon Citrix Netscaler loadbalancer.org F5 BigIP Radware Coyotepoint Layer 7+ App. Delivery Controllers Layer 7Advanced LBs Layer 4Load Balancers Slide 21 © Zeus Technology 2008
- 46. Load Balancer Taxonomy Commercial Software Microsoft NLB Zeus Traffic Manager Zeus Load Balancer ClusterScale Netscaler VPX Pound Linux Virtual Server / IPVS Open Source HAProxy nginx PerlBal Kemp Cisco CSS Cisco ACE Hardware Load Balancers Barracuda Nortel / Alteon Citrix Netscaler loadbalancer.org F5 BigIP Radware Coyotepoint Layer 7+ App. Delivery Controllers Layer 7Advanced LBs Layer 4Load Balancers Slide 22 © Zeus Technology 2008
- 47. Traffic Managers in the Cloud Commercial Software Microsoft NLB Zeus Traffic Manager Zeus Load Balancer ClusterScale Netscaler VPX Pound Open Source Linux Virtual Server / IPVS HAProxy nginx PerlBal Kemp Cisco CSS Cisco ACE Hardware Load Balancers Barracuda Nortel / Alteon Citrix Netscaler loadbalancer.org F5 BigIP Radware Coyotepoint Layer 7+ App. Delivery Controllers Layer 7Advanced LBs Layer 4Load Balancers Slide 23 © Zeus Technology 2008
- 48. © Zeus Technology 2009 Slide 24 Talk to Zeus http://www.zeus.com Raja Srinivasan, rsrinivasan@zeus.com
Editor's Notes
- Developing role of ADC into managing cloud computing transactions: Zeus Cloud GatewayAddresses pain points of organisations working with or in the cloud: private clouds, public clouds, hybrid clouds.Interface between P,V & C – so helps with migratiion of services & apps into the cloud “on-ramp”Irrespective of how cloud being used: whether for bursting to provide additional capacity, or enterprise deployment on-premises with additional services in the cloud, or whether full enterprise deployment into the cloud.Common set of pain points to be addressed:I need to control how my apps interact with the cloud, and to ensure cloud usage complies with defined business policies for data sharing and privacyI need to ensure my interactions with the cloud are secureI need to be able to log & audit my interactions with the cloudI must only share data with trusted partiesI need to use the cloud cost-effectively, so want to find the least expensive offering availableI want to use the cloud to provide extra capacity, and need to ensure cloud-based apps are secureI need to ensure my apps meet SLAs, and I depend on services provided in the cloudI need to have visibility of cloud usage and bottlenecks in real time, to enable me to diagnose and resolve problemsZeus CG interacts with ZXTMs deployed in the cloud, providing availability and performance information. Zeus CG interacts with APIs from cloud providers to locate in-cloud apps and services, which may get moved, across single or multiple clouds.Zeus CG can also trigger actions, such as notifying the cloud provisioning system things that additional traffic volume is to be expected, and the cloud responds by deploying additional resources or capacity elastically to increase available capacity until it is no longer required.Zeus CG