天呐！我用 go 从零开始写了一个 k8s 应用管理工具（附完整代码和开发过程）

## 1. k8s Deployment API 定义
  name: nginx
  image: docker.io/library/nginx:alpine
  replicas: 2
  envs:
    pairs:
      key1: value1
    configmaps:
      - srv-webapp-demo-envs:true
  resources:
    cpu: 10m/20m
    memory: 10Mi/20Mi
    nvidia.com/gpu: 1/1
  probes:
    liveness:
      action: http://:8080/healthy

## 2. k8s Service API 定义
  ports:
    - "80:8080" # cluster ip
    - "udp://!9998:8889" # 随机 nodeport
    # - "!20080:80:8080" # 指定 nodeport

## 3. k8s Ingress API 定义
ingress:
  rules:
    - http://api.example.com/ping?tls=star-example-com&svc=srv-webapp-demo:8080

$ kustz -h
快速定义 k8s 应用配置

Usage:
  kustz [flags]
  kustz [command]

Available Commands:
  completion  Generate the autocompletion script for the specified shell
  default     在屏幕上打印 kustz 默认配置
  help        Help about any command
  render      读取 kustz 配置， 生成 kustomize 所需文件

Flags:
  -h, --help   help for kustz

Use "kustz [command] --help" for more information about a command.

# 1. 生成配置文件
$ kustz default > myapp.kustz.yml
# 2. 修改配置文件
$ vi myapp.kustz.yml
# 3. 渲染配置文件
$ kustz render -c myapp.kustz.yml
# 4. 使用 kustomize 发布。
$ kubectl apply -k .

# kustomization.yaml
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
namespace: demo-demo
resources:
  - deployment.yml
  - service.yml
  - ingress.yml
configMapGenerator:
- name: my-application-properties
  files:
  - application.properties