Resource requirements

This topic describes the resources required to install and use Services Toolkit.

Note: At present it is not possible to alter default resource configurations for Services Toolkit as part of installation.

Deployments

To better understand resource requirements and use, consider the various Kubernetes deployments that are created as part of installation, and subsequent use of Services Toolkit.

Upon installation of Services Toolkit to a cluster, a single Deployment named services-toolkit-controller-manager is created and it defines a container with the following resource configuration:

  resources:
    limits:
      cpu: 200m
      memory: 500Mi
    requests:
      cpu: 100m
      memory: 100Mi

Note: See the Kubernetes documentation for further information about resource management in Kubernetes.

For each DownstreamClusterLink resource created as part of configuring a Projection Plane (see Service API Projection and Service Resource Replication), one additional Deployment is created on the downstream cluster. This Deployment defines a container with the following resource configuration:

  resources:
    limits:
      cpu: 100m
      memory: 100Mi
    requests:
      cpu: 100m
      memory: 20Mi

There is one additional Deployment for each ClusterResourceExportMonitor and ClusterResourceImportMonitor resource that is created upon configuration of Resource Replication (see Service API Projection and Service Resource Replication). This Deployment defines a container with the following resource configuration:

  resources:
    limits:
      cpu: 100m
      memory: 100Mi
    requests:
      cpu: 100m
      memory: 20Mi

Therefore, the minimum set of resources required to support the federation of an API between a Workload Cluster and a Service Cluster is as follows:

Workload Cluster
- 1 x Services Toolkit controller manager deployment
- requests 100m CPU and 100Mi memory
- 1 x API proxy deployment
- requests 100m CPU and 20Mi memory
- 1 x ClusterResourceImportMonitor deployment
- requests 100m CPU and 20Mi memory
Service Cluster
- 1 x Services Toolkit controller manager deployment
- requests 100m CPU and 100Mi memory
- 1 x ClusterResourceExportMonitor deployment
- requests 100m CPU and 20Mi memory
Total minimum resource requirements
- Workload Cluster = 300m CPU and 140Mi memory
- Service Cluster = 200m CPU and 120Mi

Note: Services Toolkit does not require the use of volumes or any external storage.