sigs.k8s.io/cluster-api@v1.6.3/internal/util/kubeadm/kubeadm.go (about)

     1  /*
     2  Copyright 2021 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  // Package kubeadm contains utils related to kubeadm.
    18  package kubeadm
    19  
    20  import "github.com/blang/semver/v4"
    21  
    22  const (
    23  	// DefaultImageRepository is the new default Kubernetes image registry.
    24  	DefaultImageRepository = "registry.k8s.io"
    25  	// OldDefaultImageRepository is the old default Kubernetes image registry.
    26  	OldDefaultImageRepository = "k8s.gcr.io"
    27  )
    28  
    29  var (
    30  	// MinKubernetesVersionImageRegistryMigration is the first Kubernetes minor version which
    31  	// has patch versions where the default image registry in kubeadm is registry.k8s.io instead of k8s.gcr.io.
    32  	MinKubernetesVersionImageRegistryMigration = semver.MustParse("1.22.0")
    33  
    34  	// NextKubernetesVersionImageRegistryMigration is the next minor version after
    35  	// the default image registry in kubeadm changed to registry.k8s.io.
    36  	NextKubernetesVersionImageRegistryMigration = semver.MustParse("1.26.0")
    37  )
    38  
    39  // GetDefaultRegistry returns the default registry of the given kubeadm version.
    40  func GetDefaultRegistry(version semver.Version) string {
    41  	// If version <= v1.22.16 return k8s.gcr.io
    42  	if version.LTE(semver.MustParse("1.22.16")) {
    43  		return OldDefaultImageRepository
    44  	}
    45  
    46  	// If v1.22.17 <= version < v1.23.0 return registry.k8s.io
    47  	if version.GTE(semver.MustParse("1.22.17")) &&
    48  		version.LT(semver.MustParse("1.23.0")) {
    49  		return DefaultImageRepository
    50  	}
    51  
    52  	// If v1.23.0  <= version <= v1.23.14 return k8s.gcr.io
    53  	if version.GTE(semver.MustParse("1.23.0")) &&
    54  		version.LTE(semver.MustParse("1.23.14")) {
    55  		return OldDefaultImageRepository
    56  	}
    57  
    58  	// If v1.23.15 <= version < v1.24.0 return registry.k8s.io
    59  	if version.GTE(semver.MustParse("1.23.15")) &&
    60  		version.LT(semver.MustParse("1.24.0")) {
    61  		return DefaultImageRepository
    62  	}
    63  
    64  	// If v1.24.0  <= version <= v1.24.8 return k8s.gcr.io
    65  	if version.GTE(semver.MustParse("1.24.0")) &&
    66  		version.LTE(semver.MustParse("1.24.8")) {
    67  		return OldDefaultImageRepository
    68  	}
    69  
    70  	// If v1.24.9  <= version return registry.k8s.io
    71  	return DefaultImageRepository
    72  }