1. Turn up the Heat with LBaaS v2
Neela Shah, Senior Software
Mark Vanderwiel, Senior Software

2. Agenda Load Balancing as a Service V2 Heat Resources Horizon Dashboard
DevStack How-To
Heat Templates
Considerations
Questions
Refs

3. Load Balancing!

4. Load Balancing as a Service (LBaaS)
Version 1
Part of neutron base project
Limited fixed design
Deprecated in Liberty
Version 2
Experimental in Kilo
Stable in Liberty
Heat Support added in Mitaka
Separate neutron-lbaas project
Pluggable driver design

5. LBaaS V2 Heat Resources LoadBalancer Listener Pool Member Pool
Health Monitor
Pool
Listener

6. LBaaS V2 Heat Resources New resource namespace for V2
OS::Neutron::LBaaS::
No overlap, reuse or interact with V1 resources
Template version
New template constraints

7. LBaaS V2 Heat Resources OS::Neutron::LBaaS::LoadBalancer
Directs traffic between pools of servers
Has a Virtual IP address (VIP)
Template constraint: neutron.lbaas.loadbalancer
OS::Neutron::LBaaS::Listener
Represents a listening endpoint for the VIP
Has a protocol (TCP, HTTP, HTTPS, Terminated HTTP)
Has a port
Template constraint: neutron.lbaas.listener

8. LBaaS V2 Heat Resources OS::Neutron::LBaaS::Pool
Represent a group of servers
Defines a subnet on which servers reside
Defines a load balancing algorithm
ROUND_ROBIN
LEAST_CONNECTIONS
SOURCE_IP
Template constraint: neutron.lbaas.pool
OS::Neutron::LBaaS::PoolMember
Represents a server as an IP address and port
Not necessarily an OS::Nova::Server

9. LBaaS V2 Heat Resources OS::Neutron::LBaaS::HealthMonitor
Monitors health of servers in a pool
Has a type (Ping, TCP, HTTP, HTTPS)
Has configurable HTTP(s) request methods
Has configurable delay, timeout and retries

10. DevStack How-To for LBaaS V2
Use neutron-lbaas project devstack plugin
enable_plugin neutron-lbaas
ENABLED_SERVICES+=q-lbaasv2
Use Namespace service provider instead of Octavia
NEUTRON_LBAAS_SERVICE_PROVIDERV2=LOADBALANCERV2:Haproxy:neutron_lbaas.driv ers.haproxy.plugin_driver.HaproxyOnHostPluginDriver:default
[Optional] Use Barbican for HTTPS certificate support
enable_plugin barbican
[Optional] Use neutron-lbaas-dashboard devstack plugin
enable_plugin neutron-lbaas-dashboard lbaas-dashboard

11. Heat Template for LBaaS V2
Heat scenario example
heat_integrationtests/scenario/test_autoscaling_lbv2.py
Uses Heat::AutoScalingGroup
Creates simple web servers
Shows scale up/down for load balancer server pool
heat-templates project example
hot/lbaasv2/lb_group.yaml
Use single template to help explain resource relationships
Show all load balancer resources

12. Considerations LBaaS V2 Pluggable drivers Octavia OpenStack CLI
Octavia, VMware, Brocade, Radware, A10 Networks, Kemp Technologies, NetScaler
Octavia
L7 – Context based routing
Pool Sharing
Active/Stand-By, Anti-Affinity
Certificate Rotation
APIs Cascade Delete, Get-Me-A-LB
Future
Active/Active
Amphora Container support
OpenStack CLI
Started in Mitaka

13. Considerations Heat resource hierarchy Solution
ANY time ANY resource under a LoadBalancer is added, updated, or deleted, the LoadBalancer goes into a PENDING_UPDATE state
No further actions can occur while LoadBalancer is PENDING_UPDATE
Heat wants to try to do things in parallel
Only one action can happen at a time
Solution
Try, fail, wait
Rinse, repeat
“Better to ask forgiveness than permission”

14. Considerations Migration from V1 Coexistance with V1
Manual for Neutron objects
Manual for Heat resources and templates
Coexistance with V1
Nothing tested
No recommendations at this time

15. Summary LBaaS V1 LBaaS V2 Going, going, gone!
Nothing new happening here
LBaaS V2
Ready to go
Integrations with Heat and Horizon
Multiple drivers
New features coming, like L7
Plan ahead and well for transition

17. References Heat Resources LBaaS Related OpenStack projects
nstack-resource-types
LBaaS Related OpenStack projects
neutron-lbaas, octavia, neutron-lbaas-dashboard
Presentations
Starting on slide 56
balancing-as-a-service-liberty-and-beyond
API Doc

18. Thank You