无法在 Kubernetes Ingress 中配置基于路径的路由
[英]Unable to configure path based routing in Kubernetes Ingress
问题描述
I am running a 3 nodes bare metal cluster on version 1.9.5 .
我在版本1.9.5上运行 3 个节点的裸机集群。
IPs of the 3 nodes are : 3个节点的IP是：
[root@node1 new]# kubectl get nodes
NAME STATUS ROLES AGE VERSION IP
node1 Ready master,node 1d v1.9.5 172.16.16.1
node2 Ready node 1d v1.9.5 172.16.16.2
node3 Ready node 1d v1.9.5 172.16.16.3
Everything I explain below is being done in 1 namespace ie ingress-nginx我在下面解释的所有内容都在 1 个命名空间中完成，即ingress-nginx
I have 2 apps deployed.我部署了 2 个应用程序。
[root@node1 new]# kubectl get po -n ingress-nginx
NAME READY STATUS RESTARTS AGE
app1-5d4d466cc7-595lc 1/1 Running 0 25m
app2-55cf97d86d-9v8gl 1/1 Running 0 25m
Their services are :他们的服务是：
[root@node1 new]# kubectl get svc -n ingress-nginx
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
appsvc1 NodePort 10.233.60.145 <none> 80:32601/TCP 25m
appsvc2 NodePort 10.233.46.230 <none> 80:30616/TCP 25m
So when I access them via NodePort , I get my desired result.所以当我通过NodePort访问它们时，我得到了我想要的结果。
curl http://172.16.16.2:32601
<h1>Hello app1!</h1>
curl http://172.16.16.2:30616
<h1>Hello app2!</h1>
Now my aim is to configure path based routing using nginx ingress controller so that at the end of it, I can get routing to app1 using现在我的目标是使用 nginx 入口控制器配置基于路径的路由，以便在它结束时，我可以使用路由到 app1
curl http://172.16.16.2/app1
<h1>Hello app1!</h1>
&
curl http://172.16.16.2/app2
<h1>Hello app2!</h1>
So now I have setup an ingress controller using ingress-nginx .所以现在我已经使用ingress-nginx设置了一个入口控制器。
The nginx controller is also deployed in the same namespace at the apps ie ingress-nginx nginx 控制器也部署在应用程序的相同命名空间中，即ingress-nginx
My ingress controller is successfully deployed as the logs indicate :我的入口控制器已成功部署，如日志所示：
[root@node1 new]# kubectl logs nginx-ingress-controller-9c7b694-bjn6h -n ingress-nginx
-------------------------------------------------------------------------------
NGINX Ingress controller
Release: 0.12.0
Build: git-1df421a
Repository: https://github.com/kubernetes/ingress-nginx
-------------------------------------------------------------------------------
I0415 16:08:18.736790 5 main.go:225] Running in Kubernetes Cluster version v1.9 (v1.9.5) - git (clean) commit f01a2bf98249a4db383560443a59bed0c13575df - platform linux/amd64
I0415 16:08:18.743855 5 main.go:84] validated ingress-nginx/default-http-backend as the default backend
I0415 16:08:19.182913 5 stat_collector.go:77] starting new nginx stats collector for Ingress controller running in namespace (class nginx)
I0415 16:08:19.182944 5 stat_collector.go:78] collector extracting information from port 18080
I0415 16:08:19.211749 5 nginx.go:281] starting Ingress controller
I0415 16:08:20.325839 5 event.go:218] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"default", Name:"app-ingress", UID:"918405ac-410e-11e8-a473-080027917402", APIVersion:"extensions", ResourceVersion:"75539", FieldPath:""}): type: 'Normal' reason: 'CREATE' Ingress default/app-ingress
I0415 16:08:20.326503 5 event.go:218] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-nginx", Name:"nginx-ingress", UID:"8dc22500-410e-11e8-a473-080027917402", APIVersion:"extensions", ResourceVersion:"75538", FieldPath:""}): type: 'Normal' reason: 'CREATE' Ingress ingress-nginx/nginx-ingress
I0415 16:08:20.413514 5 store.go:614] running initial sync of secrets
I0415 16:08:20.413591 5 nginx.go:302] starting NGINX process...
I0415 16:08:20.418356 5 leaderelection.go:174] attempting to acquire leader lease...
W0415 16:08:20.422596 5 controller.go:777] service ingress-nginx/nginx-ingress does not have any active endpoints
I0415 16:08:20.422686 5 controller.go:183] backend reload required
I0415 16:08:20.422694 5 stat_collector.go:34] changing prometheus collector from to default
I0415 16:08:20.439620 5 status.go:196] new leader elected: nginx-ingress-controller-9c7b694-h2n4b
I0415 16:08:20.534277 5 controller.go:192] ingress backend successfully reloaded...
W0415 16:08:28.768140 5 controller.go:777] service ingress-nginx/nginx-ingress does not have any active endpoints
I0415 16:09:00.478068 5 leaderelection.go:184] successfully acquired lease ingress-nginx/ingress-controller-leader-nginx
I0415 16:09:00.478207 5 status.go:196] new leader elected: nginx-ingress-controller-9c7b694-bjn6h
Then I configured my ingress using :然后我使用以下命令配置了我的入口：
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
name: app-ingress
spec:
rules:
- host: my-test.com
http:
paths:
- backend:
serviceName: appsvc1
servicePort: 80
path: /app1
- backend:
serviceName: appsvc2
servicePort: 80
path: /app2
I created this using :我使用以下方法创建了这个：
kubectl create -f app-ingress.yaml -n ingress-nginx
I then expose this using :然后我使用以下方法公开它：
apiVersion: v1
kind: Service
metadata:
name: nginx-ingress
spec:
type: NodePort
externalIps:
- 172.16.16.1
- 172.16.16.2
- 172.16.16.3
ports:
- port: 80
nodePort: 30000
name: http
selector:
app: nginx-ingress
app: nginx-ingress points to label from my label in ingress-controller pod. app: nginx-ingress指向 ingress-controller pod 中我的标签中的标签。
I deploy it using :我使用以下方法部署它：
kubectl create -f nginx-ingress-controller-service.yaml -n=ingress
But when I try to access the apps using the URLs, I get :但是当我尝试使用 URL 访问应用程序时，我得到：
curl http://172.16.16.2/app1
default backend - 404
&
curl http://172.16.16.2/app2
default backend - 404
Even doing甚至做
curl http://my-test.com/app1
default backend - 404
&
curl http://my-test.com/app2
default backend - 404
does not work.不起作用。
My /etc/hosts files is :我的 /etc/hosts 文件是：
172.16.16.1 my-test.com
Is there something I have missed or am doing wrong ?有什么我错过或做错了吗？
[root@node1 new]# kubectl get all -n ingress-nginx
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deploy/app1 2 2 2 2 48m
deploy/app2 2 2 2 2 48m
deploy/default-http-backend 1 1 1 1 3h
deploy/nginx-ingress-controller 1 1 1 1 3h
NAME DESIRED CURRENT READY AGE
rs/app1-5d4d466cc7 2 2 2 48m
rs/app2-55cf97d86d 2 2 2 48m
rs/default-http-backend-55c6c69b88 1 1 1 3h
rs/nginx-ingress-controller-9c7b694 1 1 1 3h
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deploy/app1 2 2 2 2 48m
deploy/app2 2 2 2 2 48m
deploy/default-http-backend 1 1 1 1 3h
deploy/nginx-ingress-controller 1 1 1 1 3h
NAME DESIRED CURRENT READY AGE
rs/app1-5d4d466cc7 2 2 2 48m
rs/app2-55cf97d86d 2 2 2 48m
rs/default-http-backend-55c6c69b88 1 1 1 3h
rs/nginx-ingress-controller-9c7b694 1 1 1 3h
NAME READY STATUS RESTARTS AGE
po/app1-5d4d466cc7-595lc 1/1 Running 0 48m
po/app1-5d4d466cc7-5dn72 1/1 Running 0 48m
po/app2-55cf97d86d-9v8gl 1/1 Running 0 48m
po/app2-55cf97d86d-lckpn 1/1 Running 0 48m
po/default-http-backend-55c6c69b88-8shkt 1/1 Running 0 3h
po/nginx-ingress-controller-9c7b694-bjn6h 1/1 Running 0 52m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
svc/appsvc1 NodePort 10.233.60.145 <none> 80:32601/TCP 48m
svc/appsvc2 NodePort 10.233.46.230 <none> 80:30616/TCP 48m
svc/default-http-backend ClusterIP 10.233.5.30 <none> 80/TCP 3h
svc/ingress-nginx NodePort 10.233.6.186 <none> 80:31301/TCP,443:32103/TCP 3h
svc/nginx-ingress NodePort 10.233.9.163 172.16.16.1,172.16.16.2,172.16.16.3 80:30000/TCP 2h
I even changed my ingress config to remove the host and be open for all hosts:我什至更改了入口配置以删除主机并对所有主机开放：
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
name: app-ingress
spec:
rules:
- http:
paths:
- path: /app1
backend:
serviceName: appsvc1
servicePort: 80
- path: /app2
backend:
serviceName: appsvc2
servicePort: 80
And now I get redirected.现在我被重定向了。
[root@node1 ~]# curl http://172.16.16.1/app1
<html>
<head><title>308 Permanent Redirect</title></head>
<body bgcolor="white">
<center><h1>308 Permanent Redirect</h1></center>
<hr><center>nginx/1.13.9</center>
</body>
</html>
[root@node1 ~]# curl http://172.16.16.1/app2
<html>
<head><title>308 Permanent Redirect</title></head>
<body bgcolor="white">
<center><h1>308 Permanent Redirect</h1></center>
<hr><center>nginx/1.13.9</center>
</body>
</html>
Ingress controller logs say :入口控制器日志说：
10.233.102.128 - [10.233.102.128] - - [15/Apr/2018:17:35:52 +0000] "GET /app1 HTTP/1.1" 308 187 "-" "curl/7.29.0" 80 0.000 [ingress-nginx-appsvc1-80] - - - -
10.233.102.128 - [10.233.102.128] - - [15/Apr/2018:17:36:09 +0000] "GET /app1 HTTP/1.1" 308 187 "-" "curl/7.29.0" 79 0.000 [ingress-nginx-appsvc1-80] - - - -
10.233.102.128 - [10.233.102.128] - - [15/Apr/2018:17:36:11 +0000] "GET /app2 HTTP/1.1" 308 187 "-" "curl/7.29.0" 79 0.000 [ingress-nginx-appsvc2-80] - - - -
10.233.102.128 - [10.233.102.128] - - [15/Apr/2018:17:36:25 +0000] "GET /app2 HTTP/1.1" 308 187 "-" "curl/7.29.0" 85 0.000 [ingress-nginx-appsvc2-80] - - - -
10.233.102.128 - [10.233.102.128] - - [15/Apr/2018:17:36:51 +0000] "GET /app2 HTTP/1.1" 308 187 "-" "curl/7.29.0" 80 0.000 [ingress-nginx-appsvc2-80] - - - -
2 个解决方案
解决方案1
3 2018-04-19 13:25:18
All your configs are fine, except one thing related to annotation:您的所有配置都很好，除了与注释相关的一件事：
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
You don't need this annotation, because it's processed earlier than routing and you always have the request to / .您不需要此注释，因为它比路由更早处理，并且您始终有对/的请求。 You have no route for this path, so just remove this annotation and it should work.您没有此路径的路由，因此只需删除此注释即可。
解决方案2
0 2020-05-26 12:45:05
You will have to set use-forwarded-headers: "true" in your nginx controller configmap and use the kubernetes.io/ingress.class: "nginx" annotation in your ingress.您必须在 nginx 控制器配置kubernetes.io/ingress.class: "nginx"设置use-forwarded-headers: "true"并在入口中使用kubernetes.io/ingress.class: "nginx"注释。 That should get it working那应该让它工作
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