【发布时间】：2021-09-27 15:38:53
【问题描述】：
有人可以帮忙找出ingress-2 入口规则的问题吗？为什么ingress-1 有效而ingress-2 无效。
我的设置说明，我有两个部署：
第一次部署是nginx
第二次部署是httpd
这两个部署都通过ClusterIP 服务公开，分别名为nginx-svc 和httpd-svc。所有endpoints 都适用于服务。然而，虽然
为这些服务设置入口，我无法使用host 设置入口（如ingress-2 中所述）。但是，当我使用 ingress-1 时，一切正常。
// 用于名称解析的主机文件
grep myapp.com /etc/hosts
127.0.0.1 myapp.com
//部署细节
kubectl get deployments.apps
NAME READY UP-TO-DATE AVAILABLE AGE
nginx 3/3 3 3 29m
httpd 3/3 3 3 29m
//服务详情
kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.152.183.1 <none> 443/TCP 7h48m
nginx-svc ClusterIP 10.152.183.233 <none> 80/TCP 28m
httpd-svc ClusterIP 10.152.183.58 <none> 80/TCP 27m
// 端点详细信息
kubectl get ep
NAME ENDPOINTS AGE
kubernetes 10.0.2.15:16443 7h51m
nginx-svc 10.1.198.86:80,10.1.198.87:80,10.1.198.88:80 31m
httpd-svc 10.1.198.89:80,10.1.198.90:80,10.1.198.91:80 31m
尝试 1：ingress-1
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-1
spec:
rules:
- http:
paths:
- path: /nginx
pathType: Prefix
backend:
service:
name: nginx-svc
port:
number: 80
- path: /httpd
pathType: Prefix
backend:
service:
name: httpd-svc
port:
number: 80
// 使用ingress-1 时显示入口路由工作正常的示例：
curl myapp.com/nginx
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
curl myapp.com/httpd
<html><body><h1>It works!</h1></body></html>
// 遵循入口规则没有像我预期的那样工作
尝试 2：ingress-2
kind: Ingress
metadata:
name: ingress-2
spec:
rules:
- host: "myapp.com"
http:
paths:
- pathType: Prefix
path: "/nginx"
backend:
service:
name: nginx-svc
port:
number: 80
- pathType: Prefix
path: "/httpd"
backend:
service:
name: httpd-svc
port:
number: 80
// 我在 ing describe 中找不到任何问题
kubectl describe ingress ingress-2
Name: ingress-2
Namespace: default
Address: 127.0.0.1
Default backend: default-http-backend:80 (<error: endpoints "default-http-backend" not found>)
Rules:
Host Path Backends
---- ---- --------
myapp.com
/nginx nginx-svc:80 (10.1.198.86:80,10.1.198.87:80,10.1.198.88:80)
/httpd httpd-svc:80 (10.1.198.89:80,10.1.198.90:80,10.1.198.91:80)
Annotations: <none>
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Sync 9m15s (x2 over 10m) nginx-ingress-controller Scheduled for sync
// 显示入口路由的示例不适用于此入口资源
curl myapp.com/nginx
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx/1.21.1</center>
</body>
</html>
curl myapp.com/httpd
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL was not found on this server.</p>
</body></html>
【问题讨论】：
-
你用的是什么kubernetes集群？我猜它是基于服务端点的
k3s。集群上还使用了哪个入口？默认traefik?此外，如果您删除第二个入口规则并应用第一个，它仍然有效吗？ -
我在虚拟机中使用
microk8s。它使用nginx-ingress-microk8s-controller-sgnxq
标签： kubernetes nginx-ingress microk8s