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，已经push成功的，会在当前目录下创建pusded.txt文件作为记录。该脚本默认会遍历k8s仓库的releases文件中的所有版本，如果想要下载指定版本的，只需要手动修改main函数中的releases变量值。如果你想要push镜像到其他镜像仓库，只需要修改imagename_tag变量即可。

自行修改变量docker_user为自己的docker用户名后，直接运行脚本即可（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）

bash upload_k8s_images_to_docker.sh

#!/bin/bash

# 请修改为自己在hub.docker.com中的用户名
docker_user="xwjh"

# 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 $imagename 失败！"
        exit 1
      }
      imagename_tag=${docker_user}/$(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}"

  if [ ! -f pusded.txt ]; then
    touch pusded.txt
  fi

  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