Virtual Middleboxes as First-Class Entities in the Cloud
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This document proposes Stratos, a network-aware orchestration layer that treats middleboxes as first-class entities in the cloud. Stratos aims to integrate middleboxes more seamlessly, improve performance, and maximize efficiency. It uses techniques like network-aware placement of virtual machines and middleboxes, scaling based on application performance monitoring, and flow distribution that minimizes inter-rack traffic. The goal is to provide an easy way for tenants to deploy middleboxes with low complexity while optimizing resource utilization for providers.
Virtual Middleboxes as First-Class Entities in the Cloud
- 3. Virtual Middleboxes as First-Class Entities in the Cloud Aaron Gember, Anand Krishnamurthy, Saul St. John, and Aditya Akella 1
- 4. Deploying Middleboxes Today • Elastic compute and storage • Limited add-on middlebox services • Middlebox vendors are providing VM images 2 App VM App VM App VM
- 5. • Manually piece together tunnels and traffic splitters – Brittle and inflexible • Goal: low complexity for tenants Challenge: Integration 3
- 6. • Scale based on CPU/memory – Network significantly impacts performance • Goal: high performance Challenge: Performance 4
- 7. • Distributed placement – Over-utilized network and under-utilized compute • Goals: minimize costs; support more tenants Challenge: Efficiency 5 & naïve flow distribution
- 8. Stratos (a.k.a. CloudMB) 6 Network-aware orchestration layer for middleboxes in clouds VM Manager Placement Flow DistributionSoftware Switches 100 250470 360 680730 Scaling
- 9. Stratos Scaling • Based on application performance • Scaling trials along a sequence – If ↓ Latency: Keep and try another – Else: Discard and move on 7 App 500 ms400 ms395 ms
- 10. Stratos Flow Distribution • Minimizes inter-rack traffic using linear program • Triggered following scaling, and periodically 8
- 11. Demonstration 9
- 12. Network-aware orchestration layer for middleboxes in clouds • Deployable by cloud providers or third parties • Minimizes network interactions • Maximizes efficiency for tenants and providers Stratos Summary 10 Visit us in the exhibit hall! http://stratos.cs.wisc.edu