Cluster API is a Kubernetes sub-project that provides declarative APIs and tooling to simplify provisioning, upgrading, and operating multiple Kubernetes clusters on any infrastructure. It works by having core Cluster API components along with plugins for different bootstrap, control-plane and infrastructure providers like Openstack, AWS, GCP etc. The presentation discusses Cluster API integration with Openstack, considerations for using it in production including separate internal and public connections and reusing Openstack networking, and proposes a time-saving deployment model leveraging various Cluster API and Gardener projects.

1. Deliver managed
Kubernetes at Scale
with Cluster API

2. About us
Trần Văn Thắng
Cloud Solution Engineer at Viettel
Phạm Tường Chiến
Cloud Solution Engineer at Viettel

3. Agenda
● Introduction to Cluster API
● Cluster API x Openstack Integration
● Cluster API in production
● Time-saving deployment model

4. Introduction to Cluster API

5. Cluster API Introduction
● Kubernetes sub-project
● Started by Cluster Lifecycle SIG
● Focused on providing declarative APIs and tooling to
simplify provisioning, upgrading, and operating
multiple Kubernetes clusters
● Extend to support any infrastructure
● Latest Version: v1.2.1

6. Where we are at?

7. Cluster API Adoption
By https://www.cncf.io/

8. How does it work?

9. Take a closer look

10. Cluster API Plugins
● Core Provider: Cluster API
● Bootstrap Provider: kubeadm, talos…
● Control-plane Provider: kubeadm, aws-eks, talos…
● Infras Provider: Openstack, AWS, GCP, Azure…

11. Cluster API x Openstack Integration

12. Project involved
kubernetes-sigs/cluster-api
kubernetes-sigs/cluster-api-provider-openstack

13. Cluster API x Openstack K8s Deployment

14. Cluster API in production

15. Considerations
Separate connections for security purpose
Reuse OpenStack network component
Dealing with K8s external cloud provider OpenStack

16. Considerations
Separate connections for security purpose
Reuse OpenStack network component
Dealing with K8s external cloud provider OpenStack

17. Considerations
Separate Internal and Public Connection
Reuse OpenStack network component
Dealing with K8s external cloud provider OpenStack
Cluster API currently use K8s in-tree cloud provider to get provider-id of K8s instance in
Infrastructure Provider but

18. Time-saving deployment model

19. Proposal model
kubernetes-sigs/cluster-api
kubernetes-sigs/cluster-api-provider-openstack
kubernetes-sigs/cluster-api-provider-nested
gardener/etcd-druid
gardener/vpn2

20. Thank for your
attention