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 v1
18
19const (
20	LabelHostname = "kubernetes.io/hostname"
21
22	LabelZoneFailureDomain       = "failure-domain.beta.kubernetes.io/zone"
23	LabelZoneRegion              = "failure-domain.beta.kubernetes.io/region"
24	LabelZoneFailureDomainStable = "topology.kubernetes.io/zone"
25	LabelZoneRegionStable        = "topology.kubernetes.io/region"
26
27	LabelInstanceType       = "beta.kubernetes.io/instance-type"
28	LabelInstanceTypeStable = "node.kubernetes.io/instance-type"
29
30	LabelOSStable   = "kubernetes.io/os"
31	LabelArchStable = "kubernetes.io/arch"
32
33	// LabelWindowsBuild is used on Windows nodes to specify the Windows build number starting with v1.17.0.
34	// It's in the format MajorVersion.MinorVersion.BuildNumber (for ex: 10.0.17763)
35	LabelWindowsBuild = "node.kubernetes.io/windows-build"
36
37	// LabelNamespaceSuffixKubelet is an allowed label namespace suffix kubelets can self-set ([*.]kubelet.kubernetes.io/*)
38	LabelNamespaceSuffixKubelet = "kubelet.kubernetes.io"
39	// LabelNamespaceSuffixNode is an allowed label namespace suffix kubelets can self-set ([*.]node.kubernetes.io/*)
40	LabelNamespaceSuffixNode = "node.kubernetes.io"
41
42	// LabelNamespaceNodeRestriction is a forbidden label namespace that kubelets may not self-set when the NodeRestriction admission plugin is enabled
43	LabelNamespaceNodeRestriction = "node-restriction.kubernetes.io"
44
45	// IsHeadlessService is added by Controller to an Endpoint denoting if its parent
46	// Service is Headless. The existence of this label can be used further by other
47	// controllers and kube-proxy to check if the Endpoint objects should be replicated when
48	// using Headless Services
49	IsHeadlessService = "service.kubernetes.io/headless"
50)
51