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Nginx Ingress 给出 404 未找到任何入口资源

转载 作者：行者123 更新时间：2023-12-04 12:39:45 25 4
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Nginx Controller 在本地设置任何入口资源时都会抛出 404 错误。

nginx-ingress Controller 设置是根据以下文档中详述的步骤进行的，并且入口 Controller 在本地设置中作为 NodePort 服务公开

https://github.com/nginxinc/kubernetes-ingress/blob/master/docs/installation.md#5-access-the-live-activity-monitoring-dashboard--stub_status-page

以下示例入口资源用于测试入口
香蕉.yaml

kind: Pod
apiVersion: v1
metadata:
  name: banana-app
  namespace: nginx-ingress
  labels:
    app: banana
spec:
  containers:
    - name: banana-app
      image: hashicorp/http-echo
      args:
        - "-text=banana"

---

kind: Service
apiVersion: v1
metadata:
  name: banana-service
  namespace: nginx-ingress
spec:
  selector:
    app: banana
  ports:
    - port: 5678

苹果.yaml 
kind: Pod
apiVersion: v1
metadata:
  name: apple-app
  namespace: nginx-ingress
  labels:
    app: apple
spec:
  containers:
    - name: apple-app
      image: hashicorp/http-echo
      args:
        - "-text=apple"

---

kind: Service
apiVersion: v1
metadata:
  name: apple-service
  namespace: nginx-ingress
spec:
  selector:
    app: apple
  ports:
    - port: 5678 #

入口文件.yaml 
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: example-ingress
  namespace: nginx-ingress
  annotations:
    ingress.kubernetes.io/rewrite-target: /
    kubernetes.io/ingress.class: nginx
spec:
  rules:
  - http:
      paths:
        - path: /apple
          backend:
            serviceName: apple-service
            servicePort: 5678
        - path: /banana
          backend:
            serviceName: banana-service
            servicePort: 5678

以下是服务列表 
NAMESPACE       NAME                   TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
nginx-ingress   apple-service          ClusterIP   10.111.230.109   <none>        5678/TCP                     95m
nginx-ingress   banana-service         ClusterIP   10.102.139.127   <none>        5678/TCP                     95m
nginx-ingress   nginx-ingress          NodePort    10.97.65.187     <none>        80:30207/TCP,443:31031/TCP   6d23h
[root@kube01 ingress]# kubectl get ing
NAME              HOSTS              ADDRESS   PORTS     AGE
example-ingress   *                            80        131m
[root@kube01 ingress]# kubectl describe ing example-ingress
Name:             example-ingress
Namespace:        default
Address:
Default backend:  default-http-backend:80 (<none>)
Rules:
  Host  Path  Backends
  ----  ----  --------
  *
        /apple    apple-service:5678 (10.244.2.7:5678)
        /banana   banana-service:5678 (10.244.1.11:5678)
Annotations:
  ingress.kubernetes.io/rewrite-target:  /
Events:                                  <none>

如果我按如下方式直接 curl pod ，它会按预期工作 
[root@kube01 ingress]# curl http://10.244.2.7:5678/apple
apple
[root@kube01 ingress]# curl http://10.244.1.11:5678/banana
banana
[root@kube01 ingress]#

但是，如果我尝试通过 Nodeport 入口 Controller 访问它，我总是找不到如下 
[root@kube01 ingress]# curl http://xx.xx.xx.193:30207/apple
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx/1.17.2</center>
</body>
</html>
[root@kube01 ingress]# curl http://xx.xx.xx.193:30207/banana
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx/1.17.2</center>
</body>
</html>
[root@kube01 ingress]#


curl http://xx.xx.xx.193:30207/apple
curl http://xx.xx.xx.193:30207/banana
从外部访问或从浏览器访问时，上述语句应分别显示苹果和香蕉

更新:我进入运行入口 Controller 的 pod 并检查其配置文件，发现入口资源未应用于 Controller 。我尝试重新启动容器但没有运气。我也尝试重新应用入口资源，但 pod 中的配置文件没有改变。进入 Controller 的所有内容都在配置文件中的位置标记中抛出 404。任何有关资源未应用于 Controller 的帮助表示赞赏 
root@nginx-ingress-685d7964cd-djvgf:/etc/nginx# cat nginx.conf

user  nginx;
worker_processes  auto;
daemon off;

error_log  /var/log/nginx/error.log notice;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';


    access_log  /var/log/nginx/access.log  main;


    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout 65s;
    keepalive_requests 100;

    #gzip  on;

    server_names_hash_max_size 512;


    variables_hash_bucket_size 256;
    variables_hash_max_size 1024;

    map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
    }





    server {
        listen 80 default_server;
        listen 443 ssl default_server;

        ssl_certificate /etc/nginx/secrets/default;
        ssl_certificate_key /etc/nginx/secrets/default;

        server_name _;
        server_tokens "on";
        access_log off;



        location / {
           return 404;
        }
    }
    # stub_status
    server {
        listen 8080;

        allow 127.0.0.1;
        deny all;
        location /stub_status {
            stub_status;
        }
    }

    include /etc/nginx/config-version.conf;
    include /etc/nginx/conf.d/*.conf;

    server {
        listen unix:/var/run/nginx-502-server.sock;
        access_log off;

        location / {
            return 502;
        }
    }
}

stream {
    log_format  stream-main  '$remote_addr [$time_local] '
                      '$protocol $status $bytes_sent $bytes_received '
                      '$session_time';

    access_log  /var/log/nginx/stream-access.log  stream-main;


}
root@nginx-ingress-685d7964cd-djvgf:/etc/nginx#

最佳答案

我有一些评论(我注意到的):

1 , 您的入口在默认命名空间中工作:

  Namespace:        default
  instead of nginx-ingress namespace

2 , 在您的 kubectl describe ing example-ingress没有像这样的注释: 
kubernetes.io/ingress.class:  nginx

3 ，我遇到了同样的问题，我无法访问该服务，但是当您使用 ssl-redirect: "false" 更改入口 Controller 的配置映射时，它会起作用。选项。然后它会在没有 spec.rules.host parameter 的情况下工作在您的入口资源中。

希望这有帮助

关于Nginx Ingress 给出 404 未找到任何入口资源，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57425817/

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