我想使用minikube在本地测试我的(Helm打包的)Kubernetes应用程序,并使用Kubernetes入口将HTTP代理到我的应用程序提供的HTTP服务。但这不起作用,因为尽管我未请求TLS,但入口(或入口控制器)坚持认为连接是HTTPS。如何确保入口允许HTTP?
kubectl get --output=yaml ingress
显示存在用于HTTP且没有TLS的入口资源:
apiVersion: v1
items:
- apiVersion: extensions/v1beta1
kind: Ingress
metadata:
creationTimestamp: "2019-10-06T10:54:38Z"
generation: 1
labels:
app.kubernetes.io/instance: quarreling-shrimp
app.kubernetes.io/managed-by: Tiller
app.kubernetes.io/name: mc
app.kubernetes.io/version: 2.3.1-SNAPSHOT
helm.sh/chart: mc-2.3.1
name: quarreling-shrimp-mc
namespace: default
resourceVersion: "126597"
selfLink: /apis/extensions/v1beta1/namespaces/default/ingresses/quarreling-shrimp-mc
uid: 296f8d69-8f40-49c5-b352-acbc6ec1cc19
spec:
rules:
- http:
paths:
- backend:
serviceName: quarreling-shrimp-mc-be-svc
servicePort: 8080
path: /api
- backend:
serviceName: quarreling-shrimp-mc-fe
servicePort: 80
path: /
status:
loadBalancer:
ingress:
- ip: 192.168.122.66
kind: List
metadata:
resourceVersion: ""
selfLink: ""
但是当我尝试使用HTTP访问应用程序时,响应尝试重定向以使用HTTPS。这是curl -i 192.168.122.66
的输出:
HTTP/1.1 308 Permanent Redirect
Server: openresty/1.15.8.1
Date: Sun, 06 Oct 2019 11:22:40 GMT
Content-Type: text/html
Content-Length: 177
Connection: keep-alive
Location: https://192.168.122.66/
<html>
<head><title>308 Permanent Redirect</title></head>
<body>
<center><h1>308 Permanent Redirect</h1></center>
<hr><center>openresty/1.15.8.1</center>
</body>
</html>
答案 0 :(得分:1)
minikube使用 Nginx Ingress controller 。该控制器does a permanent redirect (HTTP status code 308) from initial HTTP to HTTPS:
默认情况下,如果该入口启用了TLS,则控制器会将(308)重定向到HTTPS
但是,正如您所指出的那样,文档表明它不应针对您的情况进行重定向,因为您尚未启用TLS。
我观察到,一旦我将host:
字段添加到未启用TLS的特定Ingress资源中,生成的curl
命令将返回HTTP/1.1 200
且没有重定向操作:
rules:
- host: example.com
http:
paths:
- backend:
serviceName: some-svc
servicePort: 80
path: /
$ curl -v http://$(kubectl get svc -l component=controller -o jsonpath='{.items[0].status.loadBalancer.ingress[0].ip}') -H 'Host: example.com'
> GET / HTTP/1.1
> Host: example.com
> User-Agent: curl/7.47.0
> Accept: */*
>
< HTTP/1.1 200
但是没有匹配主机的HTTP GET会导致重定向:
$ curl -v http://$(kubectl get svc -l component=controller -o jsonpath='{.items[0].status.loadBalancer.ingress[0].ip}')
> GET / HTTP/1.1
> Host: XX.XX.XX.XX
> User-Agent: curl/7.47.0
> Accept: */*
>
< HTTP/1.1 308 Permanent Redirect
因此,我假设尽管host:
字段是可选的,但如果您未在目标Ingress
资源中指定它,则Ingress控制器将无法正确识别与TLS相关的设置。