Red Hat Summit5장. RuntimeClass [node.k8s.io/v1]
- Description
- RuntimeClass defines a class of container runtime supported in the cluster. The RuntimeClass is used to determine which container runtime is used to run all containers in a pod. RuntimeClasses are manually defined by a user or cluster provisioner, and referenced in the PodSpec. The Kubelet is responsible for resolving the RuntimeClassName reference before running the pod. For more details, see https://kubernetes.io/docs/concepts/containers/runtime-class/
- Type
-
object - Required
-
handler
-
5.1. Specification
| Property | Type | Description |
|---|---|---|
|
|
| APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources |
|
|
| handler specifies the underlying runtime and configuration that the CRI implementation will use to handle pods of this class. The possible values are specific to the node & CRI configuration. It is assumed that all handlers are available on every node, and handlers of the same name are equivalent on every node. For example, a handler called "runc" might specify that the runc OCI runtime (using native Linux containers) will be used to run the containers in a pod. The Handler must be lowercase, conform to the DNS Label (RFC 1123) requirements, and is immutable. |
|
|
| Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds |
|
| More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata | |
|
|
| Overhead structure represents the resource overhead associated with running a pod. |
|
|
| Scheduling specifies the scheduling constraints for nodes supporting a RuntimeClass. |
5.1.1. .overhead
- Description
- Overhead structure represents the resource overhead associated with running a pod.
- Type
-
object
| Property | Type | Description |
|---|---|---|
|
| podFixed represents the fixed resource overhead associated with running a pod. |
5.1.2. .scheduling
- Description
- Scheduling specifies the scheduling constraints for nodes supporting a RuntimeClass.
- Type
-
object
| Property | Type | Description |
|---|---|---|
|
|
| nodeSelector lists labels that must be present on nodes that support this RuntimeClass. Pods using this RuntimeClass can only be scheduled to a node matched by this selector. The RuntimeClass nodeSelector is merged with a pod’s existing nodeSelector. Any conflicts will cause the pod to be rejected in admission. |
|
| tolerations are appended (excluding duplicates) to pods running with this RuntimeClass during admission, effectively unioning the set of nodes tolerated by the pod and the RuntimeClass. |
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