k8s 镜像下载并上传

该脚本用于将多个版本的k8s官方的镜像及二进制文件下载到本地，并将镜像上传到自己的docker仓库中去
直接运行即可（需要保障运行脚本的机器能够访问k8s镜像仓库，并且已经登陆了docker仓库）

upload_k8s_images_to_docker.sh

#!/bin/bash


# set -x
function logger() {
  TIMESTAMP=$(date +'%Y-%m-%d %H:%M:%S')
  case "$1" in
    debug)
      echo -e "$TIMESTAMP \033[36mDEBUG\033[0m $2"
      ;;
    info)
      echo -e "$TIMESTAMP \033[32mINFO\033[0m $2"
      ;;
    warn)
      echo -e "$TIMESTAMP \033[33mWARN\033[0m $2"
      ;;
    error)
      echo -e "$TIMESTAMP \033[31mERROR\033[0m $2"
      ;;
    *)
      ;;
  esac
}

download_images() {
    chmod +x kubeadm
    images=($(./kubeadm config images list --kubernetes-version=${kubernetes_version}))
    logger info "images: ${images}"
    pusded=$(cat ../pusded.txt)
    for imagename in ${images[@]}; do
        if [[ ! "${pusded[*]}" =~ ${imagename} ]]; then
            docker pull $imagename || { logger error "pull 镜像 $imagename 失败！"; exit 1; }
            imagename_tag=xwjh/$(echo $imagename | awk -F '/' '{print $NF}')
            docker tag $imagename $imagename_tag
            docker push $imagename_tag || { logger error "上传镜像 $imagename_tag 失败！"; exit 1; }
            echo $imagename >> ../pusded.txt
            docker rmi -f $imagename_tag
        fi
    done
}

download_k8s() {
  file_name="kubeadm"
  if [[ -f "${file_name}" && -f "${file_name}.sha256" ]]; then
    echo "$(cat ${file_name}.sha256) ${file_name}" | sha256sum --check >/dev/null 2>&1 || { logger error "${file_name} sha256sum failed."; exit 1; }
  else
    rm -f "${file_name}"{,.sha256}
    wget -nv https://storage.googleapis.com/kubernetes-release/release/${kubernetes_version}/bin/linux/amd64/"${file_name}"{,.sha256}
  fi

  file_name="kubelet"
  if [[ -f "${file_name}" && -f "${file_name}.sha256" ]]; then
    echo "$(cat ${file_name}.sha256) ${file_name}" | sha256sum --check >/dev/null 2>&1 || { logger error "${file_name} sha256sum failed."; exit 1; }
  else
    rm -f "${file_name}"{,.sha256}
    wget -nv https://storage.googleapis.com/kubernetes-release/release/${kubernetes_version}/bin/linux/amd64/"${file_name}"{,.sha256}
  fi

  file_name="kubectl"
  if [[ -f "${file_name}" && -f "${file_name}.sha256"  ]]; then
    echo "$(cat ${file_name}.sha256) ${file_name}" | sha256sum --check >/dev/null 2>&1 || { logger error "${file_name} sha256sum failed."; exit 1; }
  else
    rm -f "${file_name}"{,.sha256}
    wget -nv https://storage.googleapis.com/kubernetes-release/release/${kubernetes_version}/bin/linux/amd64/"${file_name}"{,.sha256}
  fi

  if [ -f /etc/debian_version ]; then
    if [ ! -f kubelet.service ]; then
      wget -nv "https://raw.githubusercontent.com/kubernetes/release/${kubernetes_release_version}/cmd/kubepkg/templates/latest/deb/kubelet/lib/systemd/system/kubelet.service"
    fi
    if [ ! -f 10-kubeadm.conf ]; then
      wget -nv "https://raw.githubusercontent.com/kubernetes/release/${kubernetes_release_version}/cmd/kubepkg/templates/latest/deb/kubeadm/10-kubeadm.conf"
    fi

  elif [ -f /etc/redhat-release ]; then
    if [ ! -f kubelet.service ]; then
      wget -nv "https://raw.githubusercontent.com/kubernetes/release/${kubernetes_release_version}/cmd/kubepkg/templates/latest/rpm/kubelet/kubelet.service"
    fi

    if [ ! -f 10-kubeadm.conf ]; then
      wget -nv "https://raw.githubusercontent.com/kubernetes/release/${kubernetes_release_version}/cmd/kubepkg/templates/latest/rpm/kubeadm/10-kubeadm.conf"
    fi
  else
    echo "ERROR: no deb or rpm."
    exit 1;
  fi
}


main() {
  logger info "开始..."
  which curl >/dev/null 2>&1 || yum install curl || { logger error "安装 curl 失败！"; exit 1; }
  jq --version >/dev/null 2>&1
  if [[ $? != 0 ]]; then
    jq_tag="$(curl -sSL https://api.github.com/repos/stedolan/jq/releases/latest | grep '  "tag_name": ' | awk -F'"' '{print $4}' || exit 1;)" && \
           curl --retry 5 -sSL "https://github.com/stedolan/jq/releases/download/${jq_tag}/jq-linux64" -o /usr/bin/jq && chmod +x /usr/bin/jq || { logger error "安装 jq 失败！"; exit 1; }
  fi
  rm -rf releases
  logger info "获取最新的releases文件(https://api.github.com/repos/kubernetes/kubernetes/releases)"
  wget -nv https://api.github.com/repos/kubernetes/kubernetes/releases || { logger error "获取releases失败！"; exit 1; }
  releases=($(cat releases | jq -r '.[].tag_name'|grep -Pv 'alpha|beta|rc'))
  # logger info "releases: ${releases}"
  kubernetes_release_version="$(curl --retry 5 -sSL https://api.github.com/repos/kubernetes/release/releases/latest | jq -r '.tag_name' || exit 1;)"
  logger info "kubernetes_release_version: ${kubernetes_release_version}"
  
  for version in ${releases[@]}; do
      kubernetes_version=$version
      logger info "kubernetes_version: ${kubernetes_version}"
      mkdir -p $kubernetes_version
      logger info "开始下载..."
      cd $kubernetes_version && download_k8s
      download_images
      cd ..
  done
}
main