我正在运行两个Flask应用程序,一个用于前端,一个用于后端。我已经将前端映射到端口8001,将后端映射到端口8002,当使用docker-compose时,它们都运行良好。但是,我很难将Docker映像传输到kubernetes(使用minikube在本地运行)。我已经阅读了文档,并认为自己已经正确映射了端口,但仍然收到错误消息
Error: 'dial tcp 172.17.0.5:8002: getsockopt: connection refused'
Trying to reach: 'http://172.17.0.5:8002/'
当尝试通过
访问前端或后端窗格时http://127.0.0.1:8001/api/v1/namespaces/default/pods/hello-57d6475c59-ghmhs/proxy/
我感觉我在映射端口的方式上做错了事,但是我对kubernetes的经验不足以知道什么。如果有人能找到我不见了,我将不胜感激。
它说我的两个吊舱都在运行。
NAME READY STATUS RESTARTS AGE
frontend-66d5699888-bbbct 1/1 Running 0 48m
hello-57d6475c59-ghmhs 1/1 Running 0 49m
很抱歉用代码轰炸您,但是我不知道如何更好地凝聚力。您大部分都可以忽略,只是出于上下文。
前端
from flask import Flask, jsonify
import requests
import json
app = Flask(__name__)
@app.route("/")
def home():
url = "http://backend:5000/"
res = requests.get(url)
dictFromServer = res.json()
return dictFromServer['message']
if __name__=='__main__':
app.run(debug=True, host='0.0.0.0')
后端
from flask import Flask, jsonify
app = Flask(__name__)
@app.route('/')
def hello_world():
return jsonify({ 'message': 'Hello World v1 - Demo'})
if __name__=='__main__':
app.run(debug=True, host='0.0.0.0')
Dockerfile(前端和后端的内容相同)
FROM python:3.6-alpine
WORKDIR /app
COPY requirement=s.txt /app
COPY app.py /app
RUN pip install -r requirements.txt
EXPOSE 5000
ENTRYPOINT ["python"]
CMD ["app.py"]
frontend.conf
upstream hello {
server hello;
}
server {
listen 8001;
location / {
proxy_pass http://hello;
}
}
frontend.yaml
apiVersion: v1
kind: Service
metadata:
name: frontend
spec:
selector:
app: hello
tier: frontend
ports:
- protocol: "TCP"
port: 8001
targetPort: 8001
type: NodePort
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: frontend
spec:
selector:
matchLabels:
app: hello
tier: frontend
track: stable
replicas: 1
template:
metadata:
labels:
app: hello
tier: frontend
track: stable
spec:
containers:
- name: nginx
image: "jor2/hello-world-kubernetes_frontend"
lifecycle:
preStop:
exec:
command: ["/usr/sbin/nginx","-s","quit"]
hello-service.yaml
kind: Service
apiVersion: v1
metadata:
name: hello
spec:
selector:
app: hello
tier: backend
ports:
- protocol: TCP
port: 8002
targetPort: http
hello.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: hello
spec:
selector:
matchLabels:
app: hello
tier: backend
track: stable
replicas: 1
template:
metadata:
labels:
app: hello
tier: backend
track: stable
spec:
containers:
- name: hello
image: "jor2/hello-world-kubernetes_backend"
ports:
- name: http
containerPort: 8002
答案 0 :(得分:0)
正如jasonlock在他的评论中所述,您可以使用Kompose。
我以前从未听说过Kompose https://kubernetes.io/docs/tasks/configure-pod-container/translate-compose-kubernetes/,但是在一个命令中,我可以将其从docker-compose转换为kubernetes。