Cluster API vs KubeSphere
Cluster API
cluster-api.sigs.k8s.io
KubeSphere
kubesphere.ioSide by side
| Figure | Cluster API | KubeSphere |
|---|---|---|
| Price from | Free | $65/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 8 |
| Spec score · Kubernetes Management Platforms | 8.8 (#3) | 8.9 (#1) |
| Integrations | The quick start lists infrastructure providers including AWS, Azure, GCP, OpenStack, vSphere, and KubeVirt, among others. | Official materials identify integrations or ecosystem collaboration with Jenkins, Grafana, Loki, Higress, KubeKey, OpenELB, KubeEye, Fluent Operator, and OpenFunction. |
| Intended users | The project describes its automation as intended for platform operators managing Kubernetes cluster lifecycles. | The product site describes benefits for infrastructure teams, developers, operations teams and end users deploying applications on Kubernetes. |
| Purpose | Cluster API provides declarative APIs and tooling to provision, upgrade, and operate multiple Kubernetes clusters. | KubeSphere is a Kubernetes-based distributed operating system for cloud-native application management with a plug-and-play architecture for third-party applications. |
| Security | The project’s user security guidance recommends auditing management and workload clusters, nodes, and cloud-provider activity, and using least-privilege credentials. | The Enterprise kernel adds security features including image security hardening, two-factor authentication and vulnerability fixes. |
Plans
KubeSphere
- KubeSphere Backup FreeFree
- KubeSphere Community EditionFree
- KubeSphere Community EditionFree
- KubeSphere Backup Basic$65 a month
- KubeSphere Backup Standard$200 a month
- KubeSphere Backup Enterprise$340 a month
- KubeSphere Backup ExclusivePriced on request
- KubeSphere EnterprisePriced on request
In their own words
Cluster API
Cluster API is an open-source project for managing the lifecycle of multiple Kubernetes clusters through declarative APIs and tooling. Platform operators can use it to create, scale, upgrade, and destroy Kubernetes-conformant clusters across on-premises and cloud environments. Provider implementations are interchangeable; kubeadm is the default bootstrap provider. The ecosystem includes infrastructure, bootstrap, control plane, IPAM, addon, and runtime extensions, with environments such as AWS, Azure, GCP, OpenStack, vSphere, and KubeVirt. A management cluster can use clusterctl or the Cluster API Operator to manage provider components. Clusterctl fetches provider component YAML and installs it, while the Operator uses a declarative approach intended to support GitOps workflows. Getting started requires an existing Kubernetes cluster accessible through kubectl; kind, Docker, and Helm are common prerequisites. Cluster API supports multi-cluster provisioning and upgrades, but does not manage a single cluster spanning multiple infrastructure providers or clusters it did not provision. It is free and open source. The project supports its latest two minor releases, with each supported for roughly 12 months including maintenance.
KubeSphere
KubeSphere is a Kubernetes-based platform for managing cloud-native applications, with a plug-in architecture for third-party applications and open-source tools. Its Community Edition is an open-source container platform and costs nothing, with free-forever availability for a self-managed Kubernetes platform. The platform supports multi-tenancy and multi-cluster management, with monitoring, event and audit-log queries, tenant log collection, alerting and notifications. Delivery features include Jenkins-based CI/CD and automated Source-to-Image and Binary-to-Image workflows. KubeSphere supports online or offline installation, one-click upgrades and cluster scaling across infrastructure environments. Its REST API backend includes an API server and controller manager. Enterprise adds image security hardening, two-factor authentication, vulnerability fixes and permission controls at platform, cluster and application levels. Enterprise is available by on-demand subscription or private deployment, with extensions available by subscription; pricing is available from sales. Its lightweight architecture can run with 2 CPU cores and 4 GB of memory.