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apiVersion: apps/v1 #与k8s集群版本有关,使用 kubectl api-versions 即可查看当前集群支持的版本
kind: Deployment #该配置的类型,我们使用的是 Deployment
metadata: #译名为元数据,即 Deployment 的一些基本属性和信息
name: nginx-deployment #Deployment 的名称
labels: #标签,可以灵活定位一个或多个资源,其中key和value均可自定义,可以定义多组,目前不需要理解
app: nginx #为该Deployment设置key为app,value为nginx的标签
spec: #这是关于该Deployment的描述,可以理解为你期待该Deployment在k8s中如何使用
replicas: 3 #使用该Deployment创建一个应用程序实例
selector: #标签选择器,与上面的标签共同作用,目前不需要理解
matchLabels: #选择包含标签app:nginx的资源
app: nginx
template: #这是选择或创建的Pod的模板
metadata: #Pod的元数据
labels: #Pod的标签,上面的selector即选择包含标签app:nginx的Pod
app: nginx
spec: #期望Pod实现的功能(即在pod中部署)
containers: #生成container,与docker中的container是同一种
- name: nginx #container的名称
image: registry.cn-hangzhou.aliyuncs.com/milkhall/blog:{TAG} #使用镜像nginx创建container,
imagePullPolicy: Always
ports:
- containerPort: 80 #内部服务暴露的端口
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