1/* 2Copyright 2019 The Kubernetes Authors. 3 4Licensed under the Apache License, Version 2.0 (the "License"); 5you may not use this file except in compliance with the License. 6You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10Unless required by applicable law or agreed to in writing, software 11distributed under the License is distributed on an "AS IS" BASIS, 12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13See the License for the specific language governing permissions and 14limitations under the License. 15*/ 16 17package v1beta1 18 19import ( 20 corev1 "k8s.io/api/core/v1" 21 metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" 22) 23 24// +genclient 25// +genclient:nonNamespaced 26// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object 27 28// RuntimeClass defines a class of container runtime supported in the cluster. 29// The RuntimeClass is used to determine which container runtime is used to run 30// all containers in a pod. RuntimeClasses are (currently) manually defined by a 31// user or cluster provisioner, and referenced in the PodSpec. The Kubelet is 32// responsible for resolving the RuntimeClassName reference before running the 33// pod. For more details, see 34// https://git.k8s.io/enhancements/keps/sig-node/runtime-class.md 35type RuntimeClass struct { 36 metav1.TypeMeta `json:",inline"` 37 // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata 38 // +optional 39 metav1.ObjectMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"` 40 41 // Handler specifies the underlying runtime and configuration that the CRI 42 // implementation will use to handle pods of this class. The possible values 43 // are specific to the node & CRI configuration. It is assumed that all 44 // handlers are available on every node, and handlers of the same name are 45 // equivalent on every node. 46 // For example, a handler called "runc" might specify that the runc OCI 47 // runtime (using native Linux containers) will be used to run the containers 48 // in a pod. 49 // The Handler must conform to the DNS Label (RFC 1123) requirements, and is 50 // immutable. 51 Handler string `json:"handler" protobuf:"bytes,2,opt,name=handler"` 52 53 // Overhead represents the resource overhead associated with running a pod for a 54 // given RuntimeClass. For more details, see 55 // https://git.k8s.io/enhancements/keps/sig-node/20190226-pod-overhead.md 56 // This field is alpha-level as of Kubernetes v1.15, and is only honored by servers that enable the PodOverhead feature. 57 // +optional 58 Overhead *Overhead `json:"overhead,omitempty" protobuf:"bytes,3,opt,name=overhead"` 59 60 // Scheduling holds the scheduling constraints to ensure that pods running 61 // with this RuntimeClass are scheduled to nodes that support it. 62 // If scheduling is nil, this RuntimeClass is assumed to be supported by all 63 // nodes. 64 // +optional 65 Scheduling *Scheduling `json:"scheduling,omitempty" protobuf:"bytes,4,opt,name=scheduling"` 66} 67 68// Overhead structure represents the resource overhead associated with running a pod. 69type Overhead struct { 70 // PodFixed represents the fixed resource overhead associated with running a pod. 71 // +optional 72 PodFixed corev1.ResourceList `json:"podFixed,omitempty" protobuf:"bytes,1,opt,name=podFixed,casttype=k8s.io/api/core/v1.ResourceList,castkey=k8s.io/api/core/v1.ResourceName,castvalue=k8s.io/apimachinery/pkg/api/resource.Quantity"` 73} 74 75// Scheduling specifies the scheduling constraints for nodes supporting a 76// RuntimeClass. 77type Scheduling struct { 78 // nodeSelector lists labels that must be present on nodes that support this 79 // RuntimeClass. Pods using this RuntimeClass can only be scheduled to a 80 // node matched by this selector. The RuntimeClass nodeSelector is merged 81 // with a pod's existing nodeSelector. Any conflicts will cause the pod to 82 // be rejected in admission. 83 // +optional 84 NodeSelector map[string]string `json:"nodeSelector,omitempty" protobuf:"bytes,1,opt,name=nodeSelector"` 85 86 // tolerations are appended (excluding duplicates) to pods running with this 87 // RuntimeClass during admission, effectively unioning the set of nodes 88 // tolerated by the pod and the RuntimeClass. 89 // +optional 90 // +listType=atomic 91 Tolerations []corev1.Toleration `json:"tolerations,omitempty" protobuf:"bytes,2,rep,name=tolerations"` 92} 93 94// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object 95 96// RuntimeClassList is a list of RuntimeClass objects. 97type RuntimeClassList struct { 98 metav1.TypeMeta `json:",inline"` 99 // Standard list metadata. 100 // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata 101 // +optional 102 metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"` 103 104 // Items is a list of schema objects. 105 Items []RuntimeClass `json:"items" protobuf:"bytes,2,rep,name=items"` 106} 107