使用Nginx Ingress 优雅显示错误页面

[root@yunwei-k8s-addon1-test custom-error]# ll www/
-rw-r--r--. 1 yeemiao yeemiao 415 3月  13 2019 403.html
-rw-r--r--. 1 yeemiao yeemiao 412 3月  13 2019 404.html
-rw-r--r--. 1 root    root    412 8月  16 13:40 500.html
-rw-r--r--. 1 root    root    412 8月  16 13:40 501.html
-rw-r--r--. 1 yeemiao yeemiao 415 3月  13 2019 502.html
-rw-r--r--. 1 yeemiao yeemiao 409 3月  13 2019 503.html
-rw-r--r--. 1 root    root    412 8月  16 13:40 504.html

# 目录结构
[root@yunwei-k8s-addon1-test custom-error]# ll
-rw-r--r--. 1 root root  72 8月  16 13:37 Dockerfile
drwxr-xr-x. 2 root root 118 8月  16 13:41 www

FROM registry.k8s.io/ingress-nginx/nginx-errors:v20230505
COPY www /www

apiVersion: v1
kind: Service
metadata:
  name: nginx-errors
  namespace: ingress-nginx 
  labels:
    app.kubernetes.io/name: nginx-errors
    app.kubernetes.io/part-of: ingress-nginx
spec:
  selector:
    app.kubernetes.io/name: nginx-errors
    app.kubernetes.io/part-of: ingress-nginx
  ports:
  - port: 80
    targetPort: 8080
    name: http
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-errors
  namespace: ingress-nginx 
  labels:
    app.kubernetes.io/name: nginx-errors
    app.kubernetes.io/part-of: ingress-nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: nginx-errors
      app.kubernetes.io/part-of: ingress-nginx
  template:
    metadata:
      labels:
        app.kubernetes.io/name: nginx-errors
        app.kubernetes.io/part-of: ingress-nginx
    spec:
      containers:
      - name: nginx-error-server
        image: harbor.yeemiao.com:8443/library/custom-nginx-error:20230816
        ports:
        - containerPort: 8080

# 加入参数，如果 nginx-error 和 Nginx-Ingress在同一名称空间，直接加入参数即可，如果 nginx-error 服务不在 Nginx-Ingress 控制器同样的 Namespace，请将 POD_NAMESPACE 改为他所在的名称
- --default-backend-service=$(POD_NAMESPACE)/nginx-errors
# 修改 Nginx-Ingress 控制器的configmap
[root@k8s-alone-1 manifest]# kubectl  -n ingress-nginx edit cm nginx-configuration
apiVersion: v1
data:
  allow-snippet-annotations: "true"
  custom-http-errors: 403,404,413,500,501,502,503,504    # 增加这个配置

error_page 403 = @custom_upstream-default-backend_403;                                                           
        error_page 404 = @custom_upstream-default-backend_404;                                                           
        error_page 413 = @custom_upstream-default-backend_413;                                                           
        error_page 500 = @custom_upstream-default-backend_500;                                                           
        error_page 502 = @custom_upstream-default-backend_502;                                                           
        error_page 503 = @custom_upstream-default-backend_503;                                                           
        error_page 504 = @custom_upstream-default-backend_504;