Python部署没有记录任何内容

Question

我在kubernetes上部署了一个discord机器人。它内置在docker映像中，然后部署到k8s

Dockerfile：

    FROM python:3.7

    WORKDIR /app
    COPY . /app

    RUN pip install -r requirements.txt

    ENV PYTHONUNBUFFERED=0
    CMD ["python", "-u", "main.py"]

deployment.yml：

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: pythonapp
  labels:
    app: pythonapp
spec:
  replicas: 1
  selector:
    matchLabels:
      app: pythonapp
  template:
    metadata:
      labels:
        app: pythonapp
    spec:
      containers:
        - name: pythonapp
          image: registry.example.com/pythonapp:latest
          imagePullPolicy: Always
          env:
            - name: PYTHONUNBUFFERED
              value: "0"

当我部署它时，程序运行良好。但是当我去查看pod的日志时，它会显示The selected container has not logged any messages yet.

我怎样才能把我在python中使用的任何东西记录到kubernetes pod中

Answer 1

如果要立即显示日志消息而不首先进行缓冲，则必须将PYTHONUNBUFFERED设置为1