132 lines
2.8 KiB
YAML
132 lines
2.8 KiB
YAML
# 1. 创建一个独立的命名空间，保持环境整洁
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apiVersion: v1
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kind: Namespace
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metadata:
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name: demo-space
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---
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# 2. 定义网站内容 (ConfigMap) - 我们直接把 HTML 写在配置里
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: html-config
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namespace: demo-space
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data:
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index-blue.html: |
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<html><body style="background-color:#0000; text-align:center; padding-top:50px;">
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<h1 style="color:#006064;">我是网站 1 (蓝色)</h1>
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<p>部署在 K3s 集群中</p>
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</body></html>
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index-green.html: |
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<html><body style="background-color:#4a148c; text-align:center; padding-top:50px;">
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<h1 style="color:#1b5e20;">我是网站 2 (绿色)</h1>
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<p>我有 3 个副本，正在为您提供高可用服务！</p>
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</body></html>
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---
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# 3. 部署网站 1 (Blue)
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: web-blue
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namespace: demo-space
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spec:
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replicas: 1
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selector:
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matchLabels:
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app: site-blue
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template:
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metadata:
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labels:
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app: site-blue
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spec:
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containers:
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- name: nginx
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image: nginx:alpine
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volumeMounts:
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- name: html-volume
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mountPath: /usr/share/nginx/html/index.html
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subPath: index-blue.html
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volumes:
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- name: html-volume
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configMap:
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name: html-config
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---
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# 4. 部署网站 2 (Green) - 注意这里 replicas 是 3
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: web-green
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namespace: demo-space
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spec:
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replicas: 3
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selector:
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matchLabels:
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app: site-green
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template:
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metadata:
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labels:
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app: site-green
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spec:
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containers:
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- name: nginx
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image: nginx:alpine
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volumeMounts:
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- name: html-volume
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mountPath: /usr/share/nginx/html/index.html
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subPath: index-green.html
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volumes:
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- name: html-volume
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configMap:
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name: html-config
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---
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# 5. 定义服务 (Service) - 让集群内部能找到它们
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apiVersion: v1
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kind: Service
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metadata:
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name: service-blue
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namespace: demo-space
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spec:
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selector:
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app: site-blue
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ports:
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- port: 80
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: service-green
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namespace: demo-space
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spec:
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selector:
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app: site-green
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ports:
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- port: 80
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---
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# 6. 定义路由 (Ingress) - 这就是 K3s 的“大门”
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apiVersion: networking.k8s.io/v1
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kind: Ingress
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metadata:
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name: demo-ingress
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namespace: demo-space
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spec:
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rules:
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- host: site1.u9.net3w.com
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http:
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paths:
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- path: /
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pathType: Prefix
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backend:
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service:
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name: service-blue
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port:
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number: 80
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- host: site2.u9.net3w.com
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http:
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paths:
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- path: /
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pathType: Prefix
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backend:
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service:
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name: service-green
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port:
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number: 80
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