The document describes a Kubernetes Cluster API (CAPI) provider for Apache CloudStack, developed to automate the management of Kubernetes clusters using CloudStack API. It outlines the process of creating and configuring a bootstrap cluster and the subsequent steps to provision virtual machines and organize them into a functional Kubernetes cluster. The project is open-source and is in the process of being donated to the Kubernetes special interest group (SIG).

1. A Kubernetes CAPI Provider
for Apache CloudStack
Peter Motykowski
Sr. Software Development Manager - Customer Engineering
Amazon Web Services (AWS)

2. SPONSORED BY:

3. What is Kubernetes Cluster API (CAPI)
• CAPI is a Kubernetes sub-project focused on providing declarative
APIs and tooling to simplify provisioning, upgrading, and operating
multiple Kubernetes clusters.
• The CAPI project uses Kubernetes-style APIs and patterns to
automate cluster lifecycle management for platform operators.
• For more details, see https://cluster-api.sigs.k8s.io/

4. What is Cluster API for CloudStack (CAPC)?
• CAPC is an infrastructure provider - tasked with managing provider-
specific resources for clusters and machines in CloudStack.
• Uses CloudStack API via cloudstack-go client
• Developed as Open Source and in process of donation to Kubernetes SIG
• Enables the deployment of Kubernetes Clusters to CloudStack managed
resources

5. Let’s walk through cluster creation
Apache
CloudStack
Kubernetes
Management
Infrastructure

6. Initialize the Bootstrap Cluster
Apache
CloudStack
Kubernetes
Management
Infrastructure
Bootstrap
Cluster
CAPC
Provider
clusterctl init
--infrastructure cloudstack

7. Generate a Cluster Manifest
Apache
CloudStack
Kubernetes
Management
Infrastructure
Bootstrap
Cluster
CAPC
Provider
Cluster
Manifest
clusterctl generate cluster
capc-cluster > capc-cluster-spec.yaml

8. Apply cluster manifest to Bootstrap Cluster
Apache
CloudStack
Kubernetes
Management
Infrastructure
Bootstrap
Cluster
CAPC
Provider
Cluster
Manifest
kubectl apply -f
capc-cluster-spec.yaml

9. CAPC provisions VMs on CloudStack
Apache
CloudStack
Kubernetes
Management
Infrastructure
Bootstrap
Cluster
CAPC
Provider
CAPC CRs
VM
VM
VM

10. CAPC configures VMs with Kubernetes
Apache
CloudStack
Kubernetes
Management
Infrastructure
Bootstrap
Cluster
CAPC
Provider
CAPC CRs
VM
VM
VM
K8s CP
K8s Worker
K8s Worker

11. Kubernetes processes organize into a cluster
Apache
CloudStack
Kubernetes
Management
Infrastructure
Bootstrap
Cluster
CAPC
Provider
CAPC CRs
VM
VM
VM
K8s CP
K8s Worker
K8s Worker

12. Workload cluster is ready for use
Apache
CloudStack
Kubernetes
Management
Infrastructure
Bootstrap
Cluster
CAPC
Provider
CAPC CRs
VM
VM
VM
K8s CP
K8s Worker
K8s Worker

13. Let’s see it in action!