Customers have requested the ability to have the ability to apply tolerations to the HCP control plane pods. This provides the flexibility to have the HCP pods scheduled to nodes with taints applied to them that are not currently tolerated by default.

API 

Add new field to HostedCluster. hc.Spec.Tolerations

Tolerations   []corev1.Toleration `json:"tolerations,omitempty"` 

Implementation

In support/config/deployment.go, add hc.spec.tolerations from hc when generating the default config. This will cause the toleration to naturally get spread to the deployments and statefulsets.

CLI

Add new cli argument called –tolerations to the hcp cli tool during cluster creation. This argument should be able to be set multiple times. The syntax of the field should follow the convention set by the kubectl client tool when setting a taint on a node.

For example, the kubectl client tool can be used to set the following taint on a node.

kubectl taint nodes node1 key1=value1:NoSchedule

And then the hcp cli tool should be able to add a toleration for this taint during creation with the following cli arg.

hcp cluster create kubevirt –toleration “key1=value1:noSchedule” …