解决 k8s 依赖问题（k8s.io/kubernetes拉取不到）

问题

$ go get k8s.io/kubernetes
server response: not found: k8s.io/api@v0.0.0

• 解决方法 https://suraj.io/post/2021/05/k8s-import/

# 脚本
$ vi download-deps.sh

#!/bin/bash

VERSION=${1#"v"}
if [ -z "$VERSION" ]; then
  echo "Please specify the Kubernetes version: e.g."
  echo "./download-deps.sh v1.21.0"
  exit 1
fi

set -euo pipefail

# Find out all the replaced imports, make a list of them.
MODS=($(
  curl -sS "https://raw.githubusercontent.com/kubernetes/kubernetes/v${VERSION}/go.mod" |
    sed -n 's|.*k8s.io/\(.*\) => ./staging/src/k8s.io/.*|k8s.io/\1|p'
))

# Now add those similar replace statements in the local go.mod file, but first find the version that
# the Kubernetes is using for them.
for MOD in "${MODS[@]}"; do
  V=$(
    go mod download -json "${MOD}@kubernetes-${VERSION}" |
      sed -n 's|.*"Version": "\(.*\)".*|\1|p'
  )

  go mod edit "-replace=${MOD}=${MOD}@${V}"
done

go get "k8s.io/kubernetes@v${VERSION}"
go mod download

# 执行
$ chmod u+x download-deps.sh
$ ./download-deps.sh v1.21.0  # 可替换为相应的版本

解决方法

# 删除原有错误 mod  建立新 mod 文件
$ go mod init github.com/oceanweave/admission-webhook-sample
# 执行上述脚本  注意要与实际 k8s 环境对应
$ ./download-deps.sh v1.21.1  # 可替换为相应的版本
# 执行完成后 在 go mod 中添加如下内容
go 1.17  # 注意所需 go 版本 可更改

require (
	github.com/golang/glog v1.0.0
	k8s.io/api v0.21.1
	k8s.io/apimachinery v0.21.1 # 更改对应版本
	k8s.io/client-go v1.5.2
	k8s.io/kubernetes v1.21.1  # 注意开头是 1
)

# 之后整理依赖
$ go mod tidy