要解决AdmissionController阻止一个已终止的Pod被完全删除的问题，可以通过自定义Admission Webhook来进行处理。以下是一个示例的解决方案，代码使用Go语言编写：

1. 创建一个名为admission-controller的文件夹，并在其中创建main.go文件。

2. 在main.go中导入必要的包：

package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
)

3. 创建一个名为PodDeleteHandler的结构体，用于处理Pod删除请求：

type PodDeleteHandler struct{}

4. 实现PodDeleteHandler结构体的ServeHTTP方法，用于处理请求和响应：

func (h *PodDeleteHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	// 读取请求的Body
	body, err := ioutil.ReadAll(r.Body)
	if err != nil {
		http.Error(w, "Failed to read request body", http.StatusInternalServerError)
		return
	}

	// 解析请求的JSON数据
	var request AdmissionRequest
	if err := json.Unmarshal(body, &request); err != nil {
		http.Error(w, "Failed to unmarshal request body", http.StatusBadRequest)
		return
	}

	// 检查Pod是否已终止
	if request.Request.Object.Metadata.DeletionTimestamp != nil {
		// Pod已终止，阻止删除操作
		response := AdmissionResponse{
			APIVersion: "admission.k8s.io/v1",
			Kind:       "AdmissionReview",
			Response: AdmissionReviewResponse{
				Allowed: false,
				Result: &Result{
					Message: fmt.Sprintf("Pod %s is terminated and cannot be deleted", request.Request.Object.Metadata.Name),
				},
			},
		}

		// 返回响应的JSON数据
		responseJSON, err := json.Marshal(response)
		if err != nil {
			http.Error(w, "Failed to marshal response body", http.StatusInternalServerError)
			return
		}

		// 设置响应头部
		w.Header().Set("Content-Type", "application/json")
		// 写入响应的JSON数据
		w.Write(responseJSON)
		return
	}

	// 允许删除操作
	response := AdmissionResponse{
		APIVersion: "admission.k8s.io/v1",
		Kind:       "AdmissionReview",
		Response: AdmissionReviewResponse{
			Allowed: true,
		},
	}

	// 返回响应的JSON数据
	responseJSON, err := json.Marshal(response)
	if err != nil {
		http.Error(w, "Failed to marshal response body", http.StatusInternalServerError)
		return
	}

	// 设置响应头部
	w.Header().Set("Content-Type", "application/json")
	// 写入响应的JSON数据
	w.Write(responseJSON)
}

5. 定义一个名为AdmissionRequest的结构体，用于解析请求的JSON数据：

type AdmissionRequest struct {
	APIVersion string          `json:"apiVersion"`
	Kind       string          `json:"kind"`
	Request    AdmissionReview `json:"request"`
}

type AdmissionReview struct {
	Object Object `json:"object"`
}

type Object struct {
	Metadata Metadata `json:"metadata"`
}

type Metadata struct {
	Name              string `json:"name"`
	DeletionTimestamp *string `json:"deletionTimestamp"`
}

6. 定义一个名为AdmissionResponse的结构体，用于生成响应的JSON数据：

type AdmissionResponse struct {
	APIVersion string                  `json:"apiVersion"`
	Kind       string                  `json:"kind"`
	Response   AdmissionReviewResponse `json:"response"`
}

type AdmissionReviewResponse struct {
	Allowed bool   `json:"allowed"`
	Result  *Result `json:"result,omitempty"`
}

type Result struct {
	Message string `json:"message"`
}

7. 在main函数中，创建一个http.Server并注册PodDeleteHandler处理器：

func main() {
	// 创建一个http.Server
	server := &http.Server{
		Addr: ":8080",
	}

	// 创建一个PodDeleteHandler实例
	podDeleteHandler := &PodDeleteHandler{}

	// 注册PodDeleteHandler处理器
	http.Handle("/pod-delete", podDeleteHandler)

	// 启动