【发布时间】：2020-06-26 02:55:39
【问题描述】：
我在集群中安装了NGINX Ingress，但是当我尝试访问它时，我得到了 502
这些是我安装 NGINX Ingress 所遵循的步骤
kubectl apply -f common/ns-and-sa.yaml
kubectl apply -f common/default-server-secret.yaml
kubectl apply -f common/nginx-config.yaml
kubectl apply -f common/vs-definition.yaml
kubectl apply -f common/vsr-definition.yaml
kubectl apply -f rbac/rbac.yaml
kubectl apply -f daemon-set/nginx-ingress.yaml
这是我试图从入口控制器访问的部署
apiVersion: apps/v1
kind: Deployment
metadata:
name: ngtest
namespace: practice
labels:
app: ngtest
spec:
replicas: 1
selector:
matchLabels:
app: ngtest
template:
metadata:
labels:
app: ngtest
spec:
imagePullSecrets:
- name: testkuldeepsecret
containers:
- name: ngtest
image: nginx:latest
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: ngtest
namespace: practice
labels:
spec:
ports:
- port: 80
targetPort: 80
protocol: TCP
name: http
selector:
app: ngtest
使用集群 IP 我可以访问 nginx
现在我配置了 Ingress
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: practice-ingress
namespace: practice
spec:
rules:
- host: practice.example.com
http:
paths:
- path: /
backend:
serviceName: ngtest
servicePort: 80
入口描述
Name: practice-ingress
Namespace: practice
Address:
Default backend: default-http-backend:80 (<none>)
Rules:
Host Path Backends
---- ---- --------
practice.example.com
/ ngtest:80 (10.32.0.7:80)
Annotations:
kubectl.kubernetes.io/last-applied-configuration: {"apiVersion":"extensions/v1beta1","kind":"Ingress","metadata":{"annotations":{},"name":"practice-ingress","namespace":"practice"},"spec":{"rules":[{"host":"practice.example.com","http":{"paths":[{"backend":{"serviceName":"ngtest","servicePort":80},"path":"/"}]}}]}}
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal AddedOrUpdated 46m nginx-ingress-controller Configuration for practice/practice-ingress was added or updated
Normal AddedOrUpdated 46m nginx-ingress-controller Configuration for practice/practice-ingress was added or updated
很明显，ingress 会将其转发到 80 端口，并且 ngtest 服务也暴露在 80 端口上
我在主机文件中添加了 IP 地址和 practice.example.com。
所以当我尝试访问 http://practice.example.com 时，我得到 502
入口 NGINX Pod 日志
10.32.0.1 - - [14/Mar/2020:07:37:53 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:37:56 [error] 30#30: *13 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://10.32.0.7:80/favicon.ico", host: "practice.example.com", referrer: "http://practice.example.com/"
2020/03/14 07:37:56 [error] 30#30: *15 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET / HTTP/1.1", upstream: "http://10.32.0.7:80/", host: "practice.example.com"
10.32.0.1 - - [14/Mar/2020:07:37:56 +0000] "GET /favicon.ico HTTP/1.1" 502 559 "http://practice.example.com/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
10.32.0.1 - - [14/Mar/2020:07:37:56 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:37:59 [error] 30#30: *13 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://10.32.0.7:80/favicon.ico", host: "practice.example.com", referrer: "http://practice.example.com/"
10.32.0.1 - - [14/Mar/2020:07:37:59 +0000] "GET /favicon.ico HTTP/1.1" 502 559 "http://practice.example.com/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:43:03 [error] 30#30: *19 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET / HTTP/1.1", upstream: "http://10.32.0.7:80/", host: "practice.example.com"
10.32.0.1 - - [14/Mar/2020:07:43:03 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:43:06 [error] 30#30: *19 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://10.32.0.7:80/favicon.ico", host: "practice.example.com", referrer: "http://practice.example.com/"
10.32.0.1 - - [14/Mar/2020:07:43:06 +0000] "GET /favicon.ico HTTP/1.1" 502 559 "http://practice.example.com/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:43:09 [error] 30#30: *19 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET / HTTP/1.1", upstream: "http://10.32.0.7:80/", host: "practice.example.com"
10.32.0.1 - - [14/Mar/2020:07:43:09 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:43:12 [error] 30#30: *19 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://10.32.0.7:80/favicon.ico", host: "practice.example.com", referrer: "http://practice.example.com/"
10.32.0.1 - - [14/Mar/2020:07:43:12 +0000] "GET /favicon.ico HTTP/1.1" 502 559 "http://practice.example.com/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:52:07 [error] 30#30: *25 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /practice HTTP/1.1", upstream: "http://10.32.0.7:80/practice", host: "practice.example.com"
10.32.0.1 - - [14/Mar/2020:07:52:07 +0000] "GET /practice HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:52:11 [error] 30#30: *25 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://10.32.0.7:80/favicon.ico", host: "practice.example.com", referrer: "http://practice.example.com/practice"
10.32.0.1 - - [14/Mar/2020:07:52:11 +0000] "GET /favicon.ico HTTP/1.1" 502 559 "http://practice.example.com/practice" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:54:48 [error] 30#30: *29 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://10.32.0.7:80/favicon.ico", host: "practice.example.com", referrer: "http://practice.example.com/practice"
10.32.0.1 - - [14/Mar/2020:07:54:48 +0000] "GET /favicon.ico HTTP/1.1" 502 559 "http://practice.example.com/practice" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 07:54:58 [error] 30#30: *29 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://10.32.0.7:80/favicon.ico", host: "practice.example.com", referrer: "http://practice.example.com/practice"
10.32.0.1 - - [14/Mar/2020:07:54:58 +0000] "GET /favicon.ico HTTP/1.1" 502 559 "http://practice.example.com/practice" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 08:13:36 [error] 30#30: *32 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET / HTTP/1.1", upstream: "http://10.32.0.7:80/", host: "practice.example.com"
10.32.0.1 - - [14/Mar/2020:08:13:36 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
2020/03/14 08:13:39 [error] 30#30: *32 connect() failed (113: No route to host) while connecting to upstream, client: 10.32.0.1, server: practice.example.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://10.32.0.7:80/favicon.ico", host: "practice.example.com", referrer: "http://practice.example.com/"
10.32.0.1 - - [14/Mar/2020:08:13:39 +0000] "GET /favicon.ico HTTP/1.1" 502 559 "http://practice.example.com/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36" "-"
正在运行的资源
root@ip-172-31-12-0:/home/ubuntu# kubectl get all --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system pod/coredns-6955765f44-7fxkh 1/1 Running 0 6d13h
kube-system pod/coredns-6955765f44-l7dkf 1/1 Running 0 6d13h
kube-system pod/etcd-ip-172-31-12-0 1/1 Running 0 6d13h
kube-system pod/kube-apiserver-ip-172-31-12-0 1/1 Running 0 3h2m
kube-system pod/kube-controller-manager-ip-172-31-12-0 1/1 Running 1 6d13h
kube-system pod/kube-proxy-2h672 1/1 Running 1 6d13h
kube-system pod/kube-proxy-7zc4j 1/1 Running 0 6d13h
kube-system pod/kube-scheduler-ip-172-31-12-0 1/1 Running 1 6d13h
kube-system pod/weave-net-wrrml 2/2 Running 0 6d13h
kube-system pod/weave-net-wxjv4 2/2 Running 4 6d13h
nginx-ingress pod/nginx-ingress-9hsck 1/1 Running 0 58m
nginx-ingress pod/nginx-ingress-xvhfg 1/1 Running 0 58m
practice pod/customer-855c6d9bc8-8pq8v 1/1 Running 0 14h
practice pod/ngtest-6c5ff8c7df-2867b 1/1 Running 0 46m
practice pod/some-mysql-7896cfbb4c-zlpl8 1/1 Running 0 38h
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 6d13h
kube-system service/kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 6d13h
practice service/customer-service ClusterIP 10.110.222.12 <none> 80/TCP 14h
practice service/ngtest ClusterIP 10.105.115.222 <none> 80/TCP 46m
practice service/some-mysql ClusterIP None <none> 3306/TCP 38h
NAMESPACE NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE
kube-system daemonset.apps/kube-proxy 2 2 2 2 2 beta.kubernetes.io/os=linux 6d13h
kube-system daemonset.apps/weave-net 2 2 2 2 2 <none> 6d13h
nginx-ingress daemonset.apps/nginx-ingress 2 2 2 2 2 <none> 58m
NAMESPACE NAME READY UP-TO-DATE AVAILABLE AGE
kube-system deployment.apps/coredns 2/2 2 2 6d13h
practice deployment.apps/customer 1/1 1 1 14h
practice deployment.apps/ngtest 1/1 1 1 46m
practice deployment.apps/some-mysql 1/1 1 1 38h
NAMESPACE NAME DESIRED CURRENT READY AGE
kube-system replicaset.apps/coredns-6955765f44 2 2 2 6d13h
practice replicaset.apps/customer-855c6d9bc8 1 1 1 14h
practice replicaset.apps/ngtest-6c5ff8c7df 1 1 1 46m
practice replicaset.apps/some-mysql-7896cfbb4c 1 1 1 38h
【问题讨论】：
标签： docker nginx kubernetes nginx-ingress