ubuntu使用国内ustc镜像安装kubelet kubeadm kubectl

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非科学上网想安装k8s比较困难，下面是我不断试错找出来较快速的能搭建k8s环境的步骤，仅供参考。

• 添加镜像源
  echo “deb [arch=amd64] https://mirrors.ustc.edu.cn/kubernetes/apt kubernetes-xenial main” | sudo tee -a /etc/apt/sources.list
• apt-get update
  可能会报错GPG ERROR

gpg --keyserver keyserver.ubuntu.com --recv-keys E084DAB9 
gpg --export --armor E084DAB9 | sudo apt-key add - 

E084DAB9 是提示的NO_PUBLICKEY公匙的后八位

• 重新apt-get update

• 安装

apt-get install -y kubelet=1.10.3-00 kubeadm=1.10.3-00 kubectl=1.10.3-00

• 下载镜像
  注意下载的镜像版本和kubelet 的版本要一致
  直接下载google的镜像肯定是下不到的，就通过下载aliyun的镜像然后重新tag镜像给后面的初始化使用

#!/bin/bash

set -e

# Check version in https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm-init/
# Search "Running kubeadm without an internet connection"
# For running kubeadm without an internet connection you have to pre-pull the required master images for the version of choice:
KUBE_VERSION=v1.10.3
KUBE_PAUSE_VERSION=3.1
ETCD_VERSION=3.1.12
DNS_VERSION=1.14.8

GCR_URL=k8s.gcr.io
ALIYUN_URL=registry.cn-shenzhen.aliyuncs.com/cookcodeblog

images=(kube-proxy-amd64:${KUBE_VERSION}
kube-scheduler-amd64:${KUBE_VERSION}
kube-controller-manager-amd64:${KUBE_VERSION}
kube-apiserver-amd64:${KUBE_VERSION}
pause-amd64:${KUBE_PAUSE_VERSION}
etcd-amd64:${ETCD_VERSION}
k8s-dns-sidecar-amd64:${DNS_VERSION}
k8s-dns-kube-dns-amd64:${DNS_VERSION}
k8s-dns-dnsmasq-nanny-amd64:${DNS_VERSION})


for imageName in ${images[@]} ; do
  docker pull $ALIYUN_URL/$imageName
  docker tag  $ALIYUN_URL/$imageName $GCR_URL/$imageName
  docker rmi $ALIYUN_URL/$imageName
done

docker images

• 启动

kubeadm init --apiserver-advertise-address 192.168.1.102 --pod-network-cidr=10.244.0.0/16 --kubernetes-version v1.10.3

可能会报swap相关的错，执行

swapoff -a

即可

输出类似

You can now join any number of machines by running the following on each node
as root:

  kubeadm join 192.168.1.102:6443 --token 2w6obv.67mh3872zeu1oseg --discovery-token-ca-cert-hash sha256:b67dc4d88936cf905c02fbedc7ae2e67b75e23297dc59425cb3be177bc80117e

即成功。