基本原理 default-backend提供了2个功能: 1. 404报错页面 2. healthz页面 # Any image is permissable as long as: # 1. It serves a 404 page at / # 2. It serves 200 on a /healthz endpoint 创建svc,外面访问80 映射到容器的8080. deploy+svc kubectl create -f default-backend.yaml http://192