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The presentation on OpenStack Networking Loadbalancing-as-a-service held at Havana summit in Portland, 18 Apr 2013
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Load Balancingas-a-service
Ilya ShakhatEugene Nikanorov
Avishay, Eugene, KC, Leon, Mark, Oleg, Youcef
... and all who helped with discussions,
specifications and testing
Thanks!
● History
Agenda
● Grizzly○ features○ architecture○ workflow
● Future
● Stand-alone solutions:○ Atlas (Java)○ Equilibrium (Python)
● In Grizzly became Quantum extension
History
● REST API● CLI ● UI in Horizon● On-host HAProxy● DevStack out-of-box support
Features Overview
● Load balancing between services on VMs● Load balancing methods (e.g. round-robin)● Session persistence● Health monitoring (TCP, HTTP)● Connection limit
Load Balancing Features
Quantum
Quantum Service Plugins
Core Plugin
Service PluginService PluginService Plugin
L2 and L3 network
LB Service
Architecture
Plugin
Agent HAProxy process
RPC
REST API
DB
Extension
python-quantumclient
Horizon
Quantum
Pool
Model
Member Member
VM A10.0.0.4:80
VM B10.0.0.5:80
Vip (10.0.0.10:80)
Health Monitor
Subnet
Subnet
Wiring
VM A Load Balancer
Router
10.0.0.1010.0.0.4
VM B
10.0.0.5
External Traffic
Internal Trafficfloating ip172.0.0.10
1. Create pool 2. Create members (1 per VM / service)3. Create vip for the pool4. (opt.) Create health monitor and
associate with Pool
Workflow
UI | Step 1
UI | Step 2
UI | Step 3
UI | Step 4
● Support of HW / VM LBs ○ driver API
● Device Inventory● Service insertion modes
○ routed mode○ 1-arm○ other modes
LBaaS Next
Architecture
LBaaS Plugin
Agent
LB A
LBaaS Extension
Driver A Driver B
Device Inventory Pluginmaps service type to device
(mgmt interface)
Device Inventory Ext.
LB B
Routed Mode Insertion
VM A
Load Balancer
10.0.0.4
VM B
10.0.0.5
provider network
tenantnetwork
172.0.0.10
Q&A
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