我在版本1.9.5上运行3节点裸机群集。
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
我在下面解释的所有内容都是在1个名称空间中完成的，即ingress-nginx
我已部署了2个应用。
[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
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
因此，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>
现在我的目标是使用nginx入口控制器配置基于路径的路由，以便在最后，我可以使用
路由到app1curl http://172.16.16.2/app1
<h1>Hello app1!</h1>
&
curl http://172.16.16.2/app2
<h1>Hello app2!</h1>
所以现在我使用ingress-nginx设置了入口控制器。
nginx控制器也部署在应用程序的同一名称空间中，即ingress-nginx
我的入口控制器已成功部署，因为日志显示：
[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
然后我使用：
配置我的入口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
我使用以下方法创建了这个：
kubectl create -f app-ingress.yaml -n ingress-nginx
然后我使用以下方式公开：
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指向我在入口控制器窗格中的标签标记。
我使用以下方式部署它：
kubectl create -f nginx-ingress-controller-service.yaml -n=ingress
但是当我尝试使用网址访问应用时，我得到：
curl http://172.16.16.2/app1
default backend - 404
&
curl http://172.16.16.2/app2
default backend - 404
即使在做
curl http://my-test.com/app1
default backend - 404
&
curl http://my-test.com/app2
default backend - 404
不起作用。
我的/ etc / hosts文件是：
172.16.16.1 my-test.com
我有什么遗漏或做错了吗？
[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
我甚至更改了我的入口配置以删除主机并为所有主机开放：
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
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] - - - -
答案 0 :(得分：1)
你的所有配置都很好，除了与注释有关的一件事：
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
您不需要此注释，因为它的处理时间早于路由，您始终会收到/的请求。您没有此路径的路径，因此只需删除此注释即可。
答案 1 :(得分：0)
您将必须在nginx控制器configmap中设置use-forwarded-headers: "true"，并在入口中使用kubernetes.io/ingress.class: "nginx"批注。那应该使它工作