Initial commit: k3s deployment configurations

2026-01-21 08:37:05 +00:00
commit 3616496b86
28 changed files with 1502 additions and 0 deletions
--- a/k3s/k3s-demo.yaml
+++ b/k3s/k3s-demo.yaml
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+# 1. 创建一个独立的命名空间，保持环境整洁
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: demo-space
+---
+# 2. 定义网站内容 (ConfigMap) - 我们直接把 HTML 写在配置里
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: html-config
+  namespace: demo-space
+data:
+  index-blue.html: |
+    <html><body style="background-color:#0000; text-align:center; padding-top:50px;">
+    <h1 style="color:#006064;">我是网站 1 (蓝色)</h1>
+    <p>部署在 K3s 集群中</p>
+    </body></html>
+  index-green.html: |
+    <html><body style="background-color:#4a148c; text-align:center; padding-top:50px;">
+    <h1 style="color:#1b5e20;">我是网站 2 (绿色)</h1>
+    <p>我有 3 个副本，正在为您提供高可用服务！</p>
+    </body></html>
+---
+# 3. 部署网站 1 (Blue)
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: web-blue
+  namespace: demo-space
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: site-blue
+  template:
+    metadata:
+      labels:
+        app: site-blue
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:alpine
+        volumeMounts:
+        - name: html-volume
+          mountPath: /usr/share/nginx/html/index.html
+          subPath: index-blue.html
+      volumes:
+      - name: html-volume
+        configMap:
+          name: html-config
+---
+# 4. 部署网站 2 (Green) - 注意这里 replicas 是 3
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: web-green
+  namespace: demo-space
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: site-green
+  template:
+    metadata:
+      labels:
+        app: site-green
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:alpine
+        volumeMounts:
+        - name: html-volume
+          mountPath: /usr/share/nginx/html/index.html
+          subPath: index-green.html
+      volumes:
+      - name: html-volume
+        configMap:
+          name: html-config
+---
+# 5. 定义服务 (Service) - 让集群内部能找到它们
+apiVersion: v1
+kind: Service
+metadata:
+  name: service-blue
+  namespace: demo-space
+spec:
+  selector:
+    app: site-blue
+  ports:
+  - port: 80
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: service-green
+  namespace: demo-space
+spec:
+  selector:
+    app: site-green
+  ports:
+  - port: 80
+---
+# 6. 定义路由 (Ingress) - 这就是 K3s 的“大门”
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: demo-ingress
+  namespace: demo-space
+spec:
+  rules:
+  - host: site1.u9.net3w.com
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: service-blue
+            port:
+              number: 80
+  - host: site2.u9.net3w.com
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: service-green
+            port:
+              number: 80