Kubernetes鏡像的離線保存和載入（很是快）

把Kubernetes的鏡像離線保存到文件，而後從文件載入就能夠實現離線安裝了（很是快）。

這裏使用的Kubernetes 1.12.1版本的鏡像，其它版本修改對應的版本號便可。

• 此處的腳本文件：
  • 位於：https://github.com/openthings/kubernetes-tools/kubeadm/
  • 文件名爲 k8s-images-save.sh、k8s-images-load.sh。

一、保存到文件-Save Images

使用docker save命令來保存docker images到文件，-o 參數指示文件名。

• 運行下面的腳本以前，建議爲鏡像文件創建一個單獨的目錄。

以下：

echo "==================================================================="
echo "Save Kubernetes images to tar."
echo "This tool created by https://my.oschina.net/u/2306127"
echo "Please visit https://github.com/openthings/kubernetes-tools"

echo "###################################################################"
echo "Kubernetes core system images."
echo "-------------------------------------------------------------------"

echo "A1.>> k8s.gcr.io/kube-apiserver:v1.12.1"
sudo docker save k8s.gcr.io/kube-apiserver:v1.12.1 -o A1-k8s-kube-apiserver-v1.12.1.tar
echo ""

echo "A2.>> k8s.gcr.io/kube-controller-manager:v1.12.1"
sudo docker save k8s.gcr.io/kube-controller-manager:v1.12.1 -o A2-k8s-kube-controller-manager-v1.12.1.tar
echo ""

echo "A3.>> k8s.gcr.io/kube-scheduler:v1.12.1"
sudo docker save k8s.gcr.io/kube-scheduler:v1.12.1 -o A3-k8s-kube-scheduler-v1.12.1.tar
echo ""

echo "A4.>> k8s.gcr.io/kube-proxy:v1.12.1"
sudo docker save k8s.gcr.io/kube-proxy:v1.12.1 -o A4-k8s-kube-proxy-v1.12.1.tar
echo ""

echo "A5.>> k8s.gcr.io/pause:3.1"
sudo docker save k8s.gcr.io/pause:3.1 -o A5-k8s-pause-3.1.tar
echo ""

echo "A6.>> k8s.gcr.io/etcd:3.2.24"
sudo docker save k8s.gcr.io/etcd:3.2.24 -o A6-k8s-etcd-3.2.24.tar
echo ""

echo "A7.>> k8s.gcr.io/coredns:1.2.2"
sudo docker save k8s.gcr.io/coredns:1.2.2 -o A7-k8s-coredns-1.2.2.tar
echo ""

echo "==================================================================="
echo "B1.>> quay.io/coreos/flannel:v0.10.0-amd64"
sudo docker save quay.io/coreos/flannel:v0.10.0-amd64 -o B1-flannel-v0.10.0.tar
echo ""

echo "B2.>> k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.0"
sudo docker save k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.0 -o B2-dashboard-v1.10.0.tar
echo ""

echo "B3.>> gcr.io/kubernetes-helm/tiller:v2.11.0"
sudo docker save gcr.io/kubernetes-helm/tiller:v2.11.0 -o B3-helm-tiller-v2.11.0.tar 
echo ""

echo "B4.>> quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.14.0"
sudo docker save quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.14.0 -o B4-ingress-controller-0.14.0.tar
echo ""

echo "B5.>> k8s.gcr.io/defaultbackend:1.3"
sudo docker save k8s.gcr.io/defaultbackend:1.3 -o B5-k8s-defaultbackend-1.3.tar
echo ""

echo "==================================================================="
echo "Save kubernetes images Finished."
echo "This tool created by https://my.oschina.net/u/2306127"
echo "Please visit https://github.com/openthings/kubernetes-tools"
echo "==================================================================="
echo ""

上面的A*爲Kubernetes系統鏡像，B*爲幾個經常使用的擴展模塊的鏡像。若是還須要其它鏡像，仿照上面編寫腳本便可。

保存爲文件k8s-images-save.sh，而後執行。

二、複製 images

使用U盤或網絡或者其它網絡，傳送images到任何地方。

• 初始鏡像的創建請參考《Kubernetes 1.12.1快速升級》，能夠從我建的鏡像倉庫下載。
• IPFS, https://ipfs.io /ipfs/QmUTm9wHwXcwHNzp7Yv9XtrRq5kr9iwGfdh1XdG25NEg5b k8s-images-1.12.1.zip
  • Test IPFS  http://127.0.0.1:8080/ipfs/QmZP1Gk88qdijGLg8L2NiB6ZqhK4HsUN39DsEdH5rxn9C8
  • http://127.0.0.1:8080/ipfs/QmSDhnmQ3oJWpiC1V4DnU7714L6qYUC7JBB4oRLMLLGGYa/Oracle_VM_VirtualBox_Extension_Pack-5.2.18.vbox-extpack
  • http://127.0.0.1:8080/ipfs/QmSDhnmQ3oJWpiC1V4DnU7714L6qYUC7JBB4oRLMLLGGYa
• 網盤下載（帶解壓復原腳本）, https://pan.baidu.com/s/1Eo0PAAGcIxOQqHn-QwhDeA
  • 使用壓縮包裏面的腳本 k8s-images-load.sh，能夠快速復原鏡像到docker images。

三、從文件載入-Load Images

使用docker load命令來從文件載入docker images，-i 參數指示源文件名。以下：

echo "==================================================================="
echo "Load Kubernetes images from tar."
echo "This tool created by https://my.oschina.net/u/2306127"
echo "Please visit https://github.com/openthings/kubernetes-tools"

echo "###################################################################"
echo "Kubernetes core system images."
echo "-------------------------------------------------------------------"

echo "A1<< k8s.gcr.io/kube-apiserver:v1.12.1"
sudo docker load -i A1-k8s-kube-apiserver-v1.12.1.tar
echo ""

echo "A2<< k8s.gcr.io/kube-controller-manager:v1.12.1"
sudo docker load -i A2-k8s-kube-controller-manager-v1.12.1.tar
echo ""

echo "A3<< k8s.gcr.io/kube-scheduler:v1.12.1"
sudo docker load -i A3-k8s-kube-scheduler-v1.12.1.tar
echo ""

echo "A4<< k8s.gcr.io/kube-proxy:v1.12.1"
sudo docker load -i A4-k8s-kube-proxy-v1.12.1.tar
echo ""

echo "A5<< k8s.gcr.io/pause:3.1"
sudo docker load -i A5-k8s-pause-3.1.tar
echo ""

echo "A6<< k8s.gcr.io/etcd:3.2.24"
sudo docker load -i A6-k8s-etcd-3.2.24.tar
echo ""

echo "A7<< k8s.gcr.io/coredns:1.2.2"
sudo docker load -i A7-k8s-coredns-1.2.2.tar
echo ""

echo "==================================================================="
echo "B1<< quay.io/coreos/flannel:v0.10.0-amd64"
sudo docker load -i B1-flannel-v0.10.0.tar
echo ""

echo "B2<< k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.0"
sudo docker load -i B2-dashboard-v1.10.0.tar
echo ""

echo "B3<< gcr.io/kubernetes-helm/tiller:v2.11.0"
sudo docker load -i B3-helm-tiller-v2.11.0.tar 
echo ""

echo "B4<< quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.14.0"
sudo docker load -i B4-ingress-controller-0.14.0.tar
echo ""

echo "B5<< k8s.gcr.io/defaultbackend:1.3"
sudo docker load -i B5-k8s-defaultbackend-1.3.tar
echo ""

echo "==================================================================="
echo "Load kubernetes images Finished."
echo "This tool created by https://my.oschina.net/u/2306127"
echo "Please visit https://github.com/openthings/kubernetes-tools"
echo "==================================================================="

保存爲文件k8s-images-load.sh，而後執行。

四、更多後續操做

• https://github.com/openthings/kubernetes-tools
• Ubuntu集羣-使用MAAS開始裸機安裝
• Ansible快速開始-指揮集羣
• Ubuntu 18.04 LTS安裝Kubernetes 1.11
• Kubernetes 1.12.1快速升級