Nginx Ingress给出404找不到任何入口资源

时间：2019-08-09 08:00:06

标签： nginx kubernetes-ingress nginx-ingress

Nginx控制器为本地中的任何入口资源设置引发404错误。

nginx-ingress控制器设置是根据以下文档中详细介绍的步骤进行的，并且在本地设置中将入口控制器公开为NodePort Service

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 banana.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

apple.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 #

ingressfile.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>

如果我按如下所示直接卷曲豆荚，则它按预期工作

[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入口控制器访问它，总是找不到如下所示的

[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]#

卷曲http://xx.xx.xx.193:30207/apple 卷曲http://xx.xx.xx.193:30207/banana 从外部或通过浏览器访问时，上述语句应分别显示苹果和香蕉

更新：我进入了运行入口控制器的Pod，检查了它的配置文件，发现入口资源未应用于控制器。我没有运气就试图重新启动该容器。我也尝试过重新应用入口资源，但Pod中的配置文件未更改。进入控制器的所有内容都将404抛出，就像配置文件中的位置标记一样。感谢您提供任何关于为什么资源没有被应用到控制器的帮助

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#

2 个答案:

答案 0 :(得分：0)

我的评论很少（我已经注意到）：

1 ，您的入口正在默认名称空间中工作：

UIInputView

2 ，在您的true中没有类似的注释：

  Namespace:        default
  instead of nginx-ingress namespace

3 ，我遇到了同样的问题，但无法访问该服务，但是当您使用kubectl describe ing example-ingress选项更改入口控制器的configmap时，它将起作用。然后它将在入口资源中没有kubernetes.io/ingress.class: nginx 的情况下工作。

希望获得帮助

答案 1 :(得分：0)

我在我的情况下修复了它。

我的入口看起来像这样(ingress.yaml)：

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: app-ingress
  namespace: sample
spec:
  rules:
    - http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: web-service
                port:
                  number: 80

我为路径添加了通配符，如下::

          - path: /*

并重新应用此入口资源：kubectl apply -f ingress.yaml

然后就成功了！

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