Lindsey Tulloch gave a talk called 'SIG Multicluster and the Path to Federation' at the Kubernetes + Cloud Native meetup in Toronto in March, 2019.

1. SIG Multicluster
and the
Path to Federation
Lindsey Tulloch • Kubernetes and Cloud Native Toronto

2. SIG Multicluster
https://github.com/kubernetes-sigs/federation-v2
Goal
History
- Ubernetes/Federation-v1
- SIG Multicluster
- Federation-v2
Future
Demo

3. Goal
https://github.com/kubernetes-sigs/federation-v2
Create a common interface to
deploy kubernetes applications
across multiple Kubernetes clusters
in order to achieve:
● resource distribution
● service discovery
● high availability

4. Ubernetes
aka
Federation
kubernetes/kubernetes
release-1.3-1.8
https://github.com/kubernetes-sigs/federation-v2
Aimed to Address:
● Capacity Overflow (cloudbursting)
● Sensitive Workloads
● Vendor lock-in Avoidance
● Immunity from zone/limited outages
Problems:
- Usability ( federation-specific
extensions stored in annotations)
- Limited flexibility (federated types,
placement and reconciliation)
- No settled path to GA

5. SIG Multi-cluster
August 2017 - Present
Cluster Registry
Federation-v2
Kube-mci

6. Federation V2
kubernetes-sigs/federation-v2
https://github.com/kubernetes-sigs/federation-v2
Core Tenets
● Modularization
● Customizable

7. Functional Areas
● Host Cluster
● Member Cluster
● Template
● Overrides
● Placement Directives
● Propagation
● Status
● Scheduling

9. Federated
Deployment

10. Federation V2
kubernetes-sigs/federation-v2
https://github.com/kubernetes-sigs/federation-v2
API Unification

11. Available
Deployment
Options
● Automated Deployment
○ script
● Helm Chart
○ Kubernetes 1.11+
○ Helm 2.10+

12. SIG Multi-cluster
Future
- Federation v2 Beta (expected
Q1 2019)
- Increase the usability of
federation
- Pull reconciliation

13. Alternative
Multicluster
Solutions
Out there
- Admirality.io Multicluster
Scheduler
- Focused on scheduling, narrower
scope than Federation v2
- Pod level scheduler
- Demo: Running Argo workflows
across clusters
- January 31st Community Meeting
- Istio Multicluster
- Mesh network across multiple
K/clusters
- Private Solutions
- CERN
- Academia (interest!)

14. Demo

15. Federation V2
Specs:
● Kubernetes 1.11.0
● Minikube v0.34.1
● Kubectl v1.10.0
● Kubebuilder v1.0.4
● etcd
● Cluster-registry (crinit tool)
● apiserver-builder

16. Thank you!
Resources
1. kubernetes-sigs/federation-v2
2. Sample Fed-v2 Demo
3. Test script to deploy on minikube
4. SIG-Multicluster Update Slides
5. Kubernetes Cluster Federation
6. Kubernetes Federation Evolution
7. SIG-Multicluster Deep Dive: Paul Morie
and Irfan Ur Rehman
8. Federation v2 Concepts
9. Federated Istio Demo by Daneyon Hansen