由于国内网络因素，kubernetes镜像需要从mirrors站点或通过dockerhub用户推送的镜像拉取

[root@kube-master ~]# kubeadm config images list --kubernetes-version v1.19.0
k8s.gcr.io/kube-apiserver:v1.19.0
k8s.gcr.io/kube-controller-manager:v1.19.0
k8s.gcr.io/kube-scheduler:v1.19.0
k8s.gcr.io/kube-proxy:v1.19.0
k8s.gcr.io/pause:3.2
k8s.gcr.io/etcd:3.4.13-0
k8s.gcr.io/coredns:1.7.0

一般而言，直接使用kubeadm拉取指定仓库地址是可以的

kubeadm config images pull --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.19.0

下面这种是我没找到自动拉取时写的，下列脚本与以上不同的地方在于修改了镜像tag 😃

#!/bin/bash
# Script For Quick Pull K8S Docker Images
# by Hellxz Zhang <hellxz001@foxmail.com>

KUBE_VERSION=v1.19.0
PAUSE_VERSION=3.2
CORE_DNS_VERSION=1.7.0
ETCD_VERSION=3.4.13-0

# pull kubernetes images from hub.docker.com
docker pull kubeimage/kube-proxy-amd64:$KUBE_VERSION
docker pull kubeimage/kube-controller-manager-amd64:$KUBE_VERSION
docker pull kubeimage/kube-apiserver-amd64:$KUBE_VERSION
docker pull kubeimage/kube-scheduler-amd64:$KUBE_VERSION
# pull aliyuncs mirror docker images
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/pause:$PAUSE_VERSION
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:$CORE_DNS_VERSION
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:$ETCD_VERSION

# retag to k8s.gcr.io prefix
docker tag kubeimage/kube-proxy-amd64:$KUBE_VERSION  k8s.gcr.io/kube-proxy:$KUBE_VERSION
docker tag kubeimage/kube-controller-manager-amd64:$KUBE_VERSION k8s.gcr.io/kube-controller-manager:$KUBE_VERSION
docker tag kubeimage/kube-apiserver-amd64:$KUBE_VERSION k8s.gcr.io/kube-apiserver:$KUBE_VERSION
docker tag kubeimage/kube-scheduler-amd64:$KUBE_VERSION k8s.gcr.io/kube-scheduler:$KUBE_VERSION
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:$PAUSE_VERSION k8s.gcr.io/pause:$PAUSE_VERSION
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:$CORE_DNS_VERSION k8s.gcr.io/coredns:$CORE_DNS_VERSION
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:$ETCD_VERSION k8s.gcr.io/etcd:$ETCD_VERSION

# untag origin tag, the images won't be delete.
docker rmi kubeimage/kube-proxy-amd64:$KUBE_VERSION
docker rmi kubeimage/kube-controller-manager-amd64:$KUBE_VERSION
docker rmi kubeimage/kube-apiserver-amd64:$KUBE_VERSION
docker rmi kubeimage/kube-scheduler-amd64:$KUBE_VERSION
docker rmi registry.cn-hangzhou.aliyuncs.com/google_containers/pause:$PAUSE_VERSION
docker rmi registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:$CORE_DNS_VERSION
docker rmi registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:$ETCD_VERSION

添加执行权限chmod +x get-k8s-images.sh

source get-k8s-images.sh

[root@kube-master ~]# docker images
REPOSITORY                           TAG        IMAGE ID       CREATED         SIZE
k8s.gcr.io/etcd                      3.4.13-0   0369cf4303ff   5 months ago    253MB
k8s.gcr.io/kube-proxy                v1.19.0    bc9c328f379c   6 months ago    118MB
k8s.gcr.io/kube-controller-manager   v1.19.0    09d665d529d0   6 months ago    111MB
k8s.gcr.io/kube-apiserver            v1.19.0    1b74e93ece2f   6 months ago    119MB
k8s.gcr.io/kube-scheduler            v1.19.0    cbdc8369d8b1   6 months ago    45.7MB
k8s.gcr.io/coredns                   1.7.0      bfe3a36ebd25   8 months ago    45.2MB
k8s.gcr.io/pause                     3.2        80d28bedfe5d   12 months ago   683kB