Add GitOps documentation and ArgoCD application config

k3s/argocd-app.yaml

@@ -0,0 +1,33 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: k3s-apps
+  namespace: argocd
+spec:
+  project: default
+
+  # Git 仓库配置
+  source:
+    repoURL: https://git.u9.net3w.com/admin/k3s-configs.git
+    targetRevision: HEAD
+    path: k3s
+
+  # 目标集群配置
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: default
+
+  # 自动同步配置
+  syncPolicy:
+    automated:
+      prune: true      # 自动删除 Git 中不存在的资源
+      selfHeal: true   # 自动修复被手动修改的资源
+      allowEmpty: false
+    syncOptions:
+    - CreateNamespace=true  # 自动创建命名空间
+    retry:
+      limit: 5
+      backoff:
+        duration: 5s
+        factor: 2
+        maxDuration: 3m