[英]Kubernetes Nginx Ingress returning 502 Bad Gateway using hosts file
成功部署應用程序后(pod 看起來沒問題,日志沒問題),我創建了 ClusterIP 服務,然后創建了 NGINX Ingress 並將主機添加到主機文件。 當我嘗試訪問posts.com/posts
時,出現 502 bad gateway 錯誤。
ingress-srv.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-srv
annotations:
nginx.ingress.kubernetes.io/service-upstream: "true"
nginx.ingress.kubernetes.io/rewrite-target: /
spec:
rules:
- host: posts.com
http:
paths:
- path: /posts
pathType: Prefix
backend:
service:
name: posts-clusterip-srv
port:
number: 4000
posts-depl.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: posts-depl
spec:
replicas: 1
selector:
matchLabels:
app: posts
template:
metadata:
labels:
app: posts
spec:
containers:
- name: posts
image: myUser/posts
resources:
limits:
memory: 512Mi
cpu: "1"
requests:
memory: 256Mi
cpu: "0.2"
ports:
- containerPort: 4000
---
apiVersion: v1
kind: Service
metadata:
name: posts-clusterip-srv
spec:
selector:
app: posts
ports:
- name: posts
protocol: TCP
port: 4000
targetPort: 4000
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 localhost
255.255.255.255 broadcasthost
::1 localhost
127.0.0.1 posts.com
# Added by Docker Desktop
# To allow the same kube context to work on the host and the container:
127.0.0.1 kubernetes.docker.internal
# End of section
Dockerfile
FROM node:alpine
WORKDIR /app
COPY package.json ./
RUN npm install
COPY ./ ./
CMD ["npm", "start"]
可能是什么問題,至少我應該在哪里尋找?
我看到兩個問題 - 試試這些,讓我知道它是否有幫助:
pathType
。 必須提供此信息,否則 Kubernetes 將無法理解它是完全匹配還是前綴匹配。 在這里閱讀更多。 (我看到@Sahadat 正確地指出了這一點,但不知何故刪除了他的答案)。spec:
containers:
- name: posts
image: myuser/posts
ports:
- containerPort: 4000
更新 1:
另一個潛在問題可能是您的主機文件中的此條目 - 127.0.0.1 posts.com
,刪除它並嘗試。
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