kubernetes pod端口没有响应

Question

我有一个pod在python中运行一个Flask应用程序，它在8083端口侦听。如果我从吊舱内访问该应用程序，它就会工作：

kubectl exec gen-759dcfd789-hscbr -c gen-pod -- curl http://localhost:8083
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
Dload  Upload   Total   Spent    Left  Speed
[...]

但当我寻找吊舱IP

kubectl describe pod gen-759dcfd789-hscbr
Name:         gen-759dcfd789-hscbr
Namespace:    default
Priority:     0
Node:         [...]
Start Time:   Wed, 15 Apr 2020 19:18:12 +0200
Labels:       app=gen
pod-template-hash=759dcfd789
Annotations:  <none>
Status:       Running
IP:           10.1.45.187
IPs:
IP:           10.1.45.187
Controlled By:  ReplicaSet/gen-759dcfd789

并尝试从吊舱外访问它

curl http://10.1.45.187:8083
curl: (7) Failed to connect to 10.1.45.187 port 8083: Conexión rehusada

它无法连接。

我对在nodejs中运行的其他应用程序也做了同样的操作，它们工作正常。这里会发生什么？如何调试它未连接的原因？提前谢谢。

我要把yaml留在这里：

apiVersion: apps/v1
kind: Deployment
metadata:
name: gen
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: gen
template:
metadata:
labels:
app: gen
spec:
containers:
- name: gen-pod
image: roxax19/python3.7:0.1
command:
- bash
- "-c"
- python3.7 gen.py
volumeMounts:
- mountPath: /mount
name: test-volume
volumes:
- name: test-volume
hostPath:
# directory location on host
path: /home/manuel/tfg/mounts/gen
# this field is optional
type: Directory

Answer 1

通常情况下，python应用程序只使用环回接口来侦听连接。确保监听接口(主机(不是127.0.0.1而是0.0.0.0

app.run(host='0.0.0.0', port=8080)