Create Kubernetes on OpenStack (KOST)

You can create your own unmanaged Kubernetes cluster with full cluster-admin privileges.

Architecture

• 1× bastion server
• 1–3× master nodes
• Multiple worker nodes

Prerequisites

To create a Kubernetes cluster, you need an OpenStack group project with sufficient quotas and enabled flavors.

Example quota requirements for a simple testing cluster:

• 1× e1.small for the bastion
• 1× r3.4core-8ram-30edisk for master nodes
• 1× c2.4core-16ram for worker nodes
• 1× floating IP
• 250 GB of storage

Things to consider:

• Number of control nodes – for simple testing, one node is enough; for production or business workloads, use three.
• Worker node sizing – determine how many and how powerful worker nodes you need. See flavor types and flavor list.
• Public IPs – one floating IP is required to access the cluster. If you need to expose applications (e.g., via nginx ingress), allocate an additional floating IP.
• Storage – request more storage if you plan to use persistent volumes.

Create a new cluster

You can create a cluster through OpenOnDemand.

Accessing the cluster

From localhost via command line

After deployment is complete, download the kubeconfig file for cluster access.
Install kubectl, save the kubeconfig to ~/.kube/config, and then you can use kubectl commands to manage the cluster.

For advanced users

If you need a more complex solution than OpenOnDemand currently provides, you can create KOST via CLI by following the steps in this repository.
Alternatively, you can contact our support.