Concepts

Concepts around ksctl core

This section will help you to learn about the underlying system of Ksctl. It will help you to obtain a deeper understanding of how Ksctl works.

📐 Architecture

Here is the entire Ksctl system level design

Sequence diagrams for 2 major operations

Create Cloud-Managed Clusters

sequenceDiagram
    participant cm as Manager Cluster Managed
    participant cc as Provision Controller
    cm->>cc: transfers specs from user or machine
    cc->>cc: to create the cloud infra (network, subnet, firewall, cluster)
    cc->>cm: 'kubeconfig' and other cluster access to the state
    cc->>cm: status of creation

Create Self-Managed HA clusters

sequenceDiagram
    participant csm as Manager Cluster Self-Managed
    participant cc as Provision Controller
    participant bc as Bootstrap Controller
    csm->>cc: transfers specs from user or machine
    cc->>cc: to create the cloud infra (network, subnet, firewall, vms)
    cc->>csm: return state to be used by BootstrapController
    csm->>bc: transfers infra state like ssh key, pub IPs, etc
    bc->>bc: bootstrap the infra by either (k3s or kubeadm)
    bc->>csm: 'kubeconfig' and other cluster access to the state
    bc->>csm: status of creation