Pricing & Limits
With centron and Kubernetes, you only pay for your worker nodes. The control plane is included in the price.
Billing model
| Item | Cost |
|---|---|
| Control Plane (Standard) | Free |
| Control Plane (High Availability) | Optional, per cluster per month |
| Worker Nodes | Depends on instance type, see the price overview |
| Set-up | Free |
A fixed monthly price per plan applies: the stated price is fixed, regardless of utilisation. If a cluster is deleted before the end of the month, you will only be charged for the hours actually used.
All prices are exclusive of VAT.
Instance types
The price is per node. A node pool comprising three nodes therefore costs three times the node price.
| Type | vCPU | RAM | NVMe |
|---|---|---|---|
| C0 | 1 | 1 GB | 25 GB |
| C1 | 1 | 2 GB | 50 GB |
| C2 | 2 | 2 GB | 60 GB |
| C3 | 2 | 4 GB | 80 GB |
| C4 | 2 | 8 GB | 100 GB |
| C5 | 4 | 8 GB | 160 GB |
| C6 | 4 | 16 GB | 200 GB |
| C7 | 8 | 16 GB | 320 GB |
| C8 | 8 | 32 GB | 400 GB |
Current prices per instance type are listed in the Kubernetes price overview. To select the correct type, see Select plan.
Sample calculation
A cluster comprising three C4-type nodes and a high-availability control plane is made up as follows:
| Item | Calculation |
|---|---|
| Node Pool | 3 × C4 node price |
| HA Control Plane | 1 × monthly price |
| Total per month | Sum of both items |
The summary in the creation dialogue box shows this total under Monthly Total, together with the corresponding hourly rate. Current node prices are listed in the Kubernetes price overview.
Costs associated with autoscaling
If autoscaling is enabled for a node pool, the costs depend on the actual number of nodes running. The summary therefore shows a range between the minimum and maximum number of nodes.
For a C3 pool with a minimum of 3 nodes and a maximum of 5 nodes, the monthly costs range accordingly from three to five times the node price.
As only active nodes are billed, the maximum costs are incurred only when the system is operating at full capacity on a continuous basis.
Further resources
These resources are billed separately:
| Resource | Note |
|---|---|
| S3 Object Storage | For information on storage allocation and data traffic, see Storage Features. |
Managed load balancers are not currently available in the cluster – therefore, no charges apply for these. Persistent volumes (CSI/PVC) are supported; the terms for volume storage will be added once they have been finalised. [DS/Product to supply] See Storage Features.
Reducing costs
- Sizing appropriately: Assess the actual utilisation in the Analytics tab, rather than choosing a size that is too large as a precaution. See View metrics .
- Use autoscaling: With fluctuating load, fewer nodes will be billed outside peak times.
- Test cluster without HA: The free Standard Control Plane is sufficient for development and training environments.