mongodb - 与 minikube 相比，在云中运行时 Pod 不通信

问题描述

编辑 - 我已将 LoadBalancer 应用于我的每个服务，并且只有我的前端运行正确的图像。我的其他图片正在运行烧瓶，但我无法打开我最新图片中的网址。我的图像托管在 Docker 存储库上，并且我正在运行谷歌云。

我正在尝试将我在 minikube 上本地运行的服务部署到云中。在本地运行时，一切都按预期工作，但是，当我移至云端时，当我收到请求时，我似乎无法从我的任何 pod 中获得响应。我可能在这里做一些愚蠢的事情，因为我从来没有在云上尝试过 Kube。有人可以阐明一下吗？看来 kube 无法解析我的服务的地址。

我的部署.yaml

apiVersion: v1
kind: Service
metadata:
  name: frontend
  labels:
    app: frontend
spec:
  ports:
  - port: 5000
    name: http
  selector:
    app: frontend
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: frontend
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: frontend
        version: v1
    spec:
      containers:
        - name: frontend
          image: jor2/frontend
          ports:
          - containerPort: 5000
---
apiVersion: v1
kind: Service
metadata:
  name: backend
  labels:
    app: backend
spec:
  ports:
  - port: 5000
    name: http
  selector:
    app: backend
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: backend
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: backend
        version: v1
    spec:
      containers:
        - name: backend
          image: jor2/backend
          ports:
          - containerPort: 5000
---
apiVersion: v1
kind: Service
metadata:
  name: admin-backend
  labels:
    app: admin-backend
spec:
  ports:
  - port: 5000
    name: http
  selector:
    app: admin-backend
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: admin-backend
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: admin-backend
        version: v1
    spec:
      containers:
        - name: admin-backend
          image: jor2/admin-backend
          ports:
          - containerPort: 5000
---
apiVersion: v1
kind: Service
metadata:
  name: utils-backend
  labels:
    app: utils-backend
spec:
  ports:
  - port: 5000
    name: http
  selector:
    app: backend
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: utils-backend
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: utils-backend
        version: v1
    spec:
      containers:
        - name: utils-backend
          image: jor2/utils-backend
          ports:
          - containerPort: 5000
---
apiVersion: v1
kind: Service
metadata:
  name: mongo
spec:
  ports:
    - port: 27017
      targetPort: 27017
  selector:
    name: mongo
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: mongo
spec:
  replicas: 1
  template:
    metadata:
      labels:
        name: mongo
        version: v1
    spec:
      containers:
        - image: mongo
          name: mongo
          ports:
            - containerPort: 27017

前端尝试向后端服务发送请求

from flask import Flask, render_template, request, flash, redirect, url_for, session, jsonify
import requests

app = Flask(__name__)

app.url_map.strict_slashes = False

HEADERS = dict()


@app.route("/view_users/", methods=['GET'])
def view_users():
    users = invoke_backend(page_name="view_users", service="utils")
    return jsonify(users)


def invoke_backend(page_name, id="", service="", headers={}):
    url = create_url(page_name, id, service)
    try:
        res = requests.get(url, headers=headers)
    except Exception:
        return "Error with {}.".format(url)
    try:
        response = res.json()
    except ValueError:
        return "Decoding JSON has failed."
    return response


def create_url(page_name, id="", service=""):
    if service == "admin":
        be_host = os.getenv('ADMIN_BACKEND_SERVICE_HOST', 'admin-backend')
        be_port = os.getenv('ADMIN_BACKEND_SERVICE_PORT', '5000')
        url = 'http://{host}:{port}/{page_name}/{id}'.format(host=be_host, port=be_port, page_name=page_name, id=id)
        return url
    elif service == "frontend":
        be_host = os.getenv('FRONTEND_SERVICE_HOST', 'frontend')
        be_port = os.getenv('FRONTEND_SERVICE_PORT', '5000')
        url = 'http://{host}:{port}/{page_name}/{id}'.format(host=be_host, port=be_port, page_name=page_name, id=id)
        return url
    elif service == "utils":
        be_host = os.getenv('UTILS_BACKEND_SERVICE_HOST', 'utils-backend')
        be_port = os.getenv('UTILS_BACKEND_SERVICE_PORT', '5000')
        url = 'http://{host}:{port}/{page_name}/{id}'.format(host=be_host, port=be_port, page_name=page_name, id=id)
        return url

    be_host = os.getenv('BACKEND_SERVICE_HOST', 'backend')
    be_port = os.getenv('BACKEND_SERVICE_PORT', '5000')
    url = 'http://{host}:{port}/{page_name}/{id}'.format(host=be_host, port=be_port, page_name=page_name, id=id)
    return url


if __name__ == '__main__':
    app.secret_key = 'secret123'
    app.run(debug=True, host='0.0.0.0')

标签： mongodbflaskkubernetesgoogle-cloud-platform

mongodb - 与 minikube 相比，在云中运行时 Pod 不通信

问题描述

解决方案

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