mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-21 14:38:46 +00:00
9a37f2d878
The kubelet allows you to set `--pod-infra-container-image` (also called `PodSandboxImage` in the kubelet config), which can be a custom location to the "pause" image in the case of Docker. Other CRIs are not supported. Set the CLI flag for the Docker case in flags.go using WriteKubeletDynamicEnvFile().
121 lines
4.6 KiB
Go
121 lines
4.6 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package images
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
|
|
"k8s.io/kubernetes/cmd/kubeadm/app/constants"
|
|
kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
|
|
)
|
|
|
|
// GetGenericImage generates and returns a platform agnostic image (backed by manifest list)
|
|
func GetGenericImage(prefix, image, tag string) string {
|
|
return fmt.Sprintf("%s/%s:%s", prefix, image, tag)
|
|
}
|
|
|
|
// GetKubernetesImage generates and returns the image for the components managed in the Kubernetes main repository,
|
|
// including the control-plane components ad kube-proxy. If specified, the HyperKube image will be used.
|
|
func GetKubernetesImage(image string, cfg *kubeadmapi.ClusterConfiguration) string {
|
|
if cfg.UseHyperKubeImage {
|
|
image = constants.HyperKube
|
|
}
|
|
repoPrefix := cfg.GetControlPlaneImageRepository()
|
|
kubernetesImageTag := kubeadmutil.KubernetesVersionToImageTag(cfg.KubernetesVersion)
|
|
return GetGenericImage(repoPrefix, image, kubernetesImageTag)
|
|
}
|
|
|
|
// GetDNSImage generates and returns the image for the DNS, that can be CoreDNS or kube-dns.
|
|
// Given that kube-dns uses 3 containers, an additional imageName parameter was added
|
|
func GetDNSImage(cfg *kubeadmapi.ClusterConfiguration, imageName string) string {
|
|
// DNS uses default image repository by default
|
|
dnsImageRepository := cfg.ImageRepository
|
|
// unless an override is specified
|
|
if cfg.DNS.ImageRepository != "" {
|
|
dnsImageRepository = cfg.DNS.ImageRepository
|
|
}
|
|
// DNS uses an imageTag that corresponds to the DNS version matching the Kubernetes version
|
|
dnsImageTag := constants.GetDNSVersion(cfg.DNS.Type)
|
|
|
|
// unless an override is specified
|
|
if cfg.DNS.ImageTag != "" {
|
|
dnsImageTag = cfg.DNS.ImageTag
|
|
}
|
|
return GetGenericImage(dnsImageRepository, imageName, dnsImageTag)
|
|
}
|
|
|
|
// GetEtcdImage generates and returns the image for etcd
|
|
func GetEtcdImage(cfg *kubeadmapi.ClusterConfiguration) string {
|
|
// Etcd uses default image repository by default
|
|
etcdImageRepository := cfg.ImageRepository
|
|
// unless an override is specified
|
|
if cfg.Etcd.Local != nil && cfg.Etcd.Local.ImageRepository != "" {
|
|
etcdImageRepository = cfg.Etcd.Local.ImageRepository
|
|
}
|
|
// Etcd uses an imageTag that corresponds to the etcd version matching the Kubernetes version
|
|
etcdImageTag := constants.DefaultEtcdVersion
|
|
etcdVersion, err := constants.EtcdSupportedVersion(cfg.KubernetesVersion)
|
|
if err == nil {
|
|
etcdImageTag = etcdVersion.String()
|
|
}
|
|
// unless an override is specified
|
|
if cfg.Etcd.Local != nil && cfg.Etcd.Local.ImageTag != "" {
|
|
etcdImageTag = cfg.Etcd.Local.ImageTag
|
|
}
|
|
return GetGenericImage(etcdImageRepository, constants.Etcd, etcdImageTag)
|
|
}
|
|
|
|
// GetPauseImage returns the image for the "pause" container
|
|
func GetPauseImage(cfg *kubeadmapi.ClusterConfiguration) string {
|
|
return GetGenericImage(cfg.ImageRepository, "pause", constants.PauseVersion)
|
|
}
|
|
|
|
// GetAllImages returns a list of container images kubeadm expects to use on a control plane node
|
|
func GetAllImages(cfg *kubeadmapi.ClusterConfiguration) []string {
|
|
imgs := []string{}
|
|
|
|
// start with core kubernetes images
|
|
if cfg.UseHyperKubeImage {
|
|
imgs = append(imgs, GetKubernetesImage(constants.HyperKube, cfg))
|
|
} else {
|
|
imgs = append(imgs, GetKubernetesImage(constants.KubeAPIServer, cfg))
|
|
imgs = append(imgs, GetKubernetesImage(constants.KubeControllerManager, cfg))
|
|
imgs = append(imgs, GetKubernetesImage(constants.KubeScheduler, cfg))
|
|
imgs = append(imgs, GetKubernetesImage(constants.KubeProxy, cfg))
|
|
}
|
|
|
|
// pause is not available on the ci image repository so use the default image repository.
|
|
imgs = append(imgs, GetPauseImage(cfg))
|
|
|
|
// if etcd is not external then add the image as it will be required
|
|
if cfg.Etcd.Local != nil {
|
|
imgs = append(imgs, GetEtcdImage(cfg))
|
|
}
|
|
|
|
// Append the appropriate DNS images
|
|
if cfg.DNS.Type == kubeadmapi.CoreDNS {
|
|
imgs = append(imgs, GetDNSImage(cfg, constants.CoreDNSImageName))
|
|
} else {
|
|
imgs = append(imgs, GetDNSImage(cfg, constants.KubeDNSKubeDNSImageName))
|
|
imgs = append(imgs, GetDNSImage(cfg, constants.KubeDNSSidecarImageName))
|
|
imgs = append(imgs, GetDNSImage(cfg, constants.KubeDNSDnsMasqNannyImageName))
|
|
}
|
|
|
|
return imgs
|
|
}
|