如何使用NodeJS和Express为OpenShift应用程序配置路由 [英] How to configure a route for an OpenShift app with nodeJS and express

问题描述

我是OpenShift的新手，我希望获得一些帮助，以便在OpenShift上为我的应用配置路由.

I am new to OpenShift and I would like some help in order to configure the route for my app on OpenShift.

这是我要部署的NodeJS-Express应用程序中的端口和ip配置:

This is my port and ip configuration in the NodeJS - Express app that I'm trying to deploy:

const server_port = process.env.OPENSHIFT_NODEJS_PORT ||  process.env.OPENSHIFT_INTERNAL_PORT || process.env.PORT || 5000;
const server_ip = process.env.OPENSHIFT_NODEJS_IP || process.env.OPENSHIFT_INTERNAL_IP || '0.0.0.0';

server.listen(server_port, server_ip, () => {
  console.log(`Server running on port ${server_port}`);
});

具有完全相同的配置，应用程序可以在Heroku中的 localhost:5000 中成功运行.任何帮助将不胜感激.

With exactly the same configuration the application runs successfully in localhost:5000 in Heroku. Any help will be appreciated.

更新:

如上所述，我更改了项目的端口和ip，这是该路由的YAML:

I changed my project's port and ip as shown above and this is my YAML for the route:

kind: Route
apiVersion: route.openshift.io/v1
metadata:
  name: *****-gitlab-io-be
  namespace: *****gitlabiobe
  selfLink: >-
    /apis/route.openshift.io/v1/namespaces/*****gitlabiobe/routes/*****-gitlab-io-be
  uid: 34fef86d-4051-11ea-bd30-0a580a810070
  resourceVersion: '155488429'
  creationTimestamp: '2020-01-26T15:33:31Z'
  labels:
    app: *****-gitlab-io-be
    app.kubernetes.io/component: *****-gitlab-io-be
    app.kubernetes.io/instance: *****-gitlab-io-be
    app.kubernetes.io/name: nodejs
    app.kubernetes.io/part-of: *****-gitlab-io-be
    app.openshift.io/runtime: nodejs
    app.openshift.io/runtime-version: latest
  annotations:
    app.openshift.io/vcs-ref: master
    app.openshift.io/vcs-uri: 'https://gitlab.com/*****/*****.gitlab.io.be.git'
    openshift.io/host.generated: 'true'
spec:
  host: >-
    ************gitlabiobe.apps.ca-central-1.starter.openshift-online.com
  subdomain: ''
  to:
    kind: Service
    name: *****-gitlab-io-be
    weight: 100
  port:
    targetPort: 5000-tcp
  wildcardPolicy: None
status:
  ingress:
    - host: >-
        *****gitlabiobe.apps.ca-central-1.starter.openshift-online.com
      routerName: default
      conditions:
        - type: Admitted
          status: 'True'
          lastTransitionTime: '2020-01-26T15:33:31Z'
      wildcardPolicy: None
      routerCanonicalHostname: apps.ca-central-1.starter.openshift-online.com

推荐答案

有几项要检查:

1. 吊舱应该可用(所有容器已准备就绪，所有探针均已通过，等等)
2. NodeJS服务器必须侦听0.0.0.0地址(不是本地主机)

3. OpenShift服务应转发8080端口，并且其选择器标识所需的Pod，例如:

1. The pod should be available (all containers are ready, all probes are passed etc)
2. NodeJS server have to listen to 0.0.0.0 address (not localhost)

3. OpenShift Service should forward 8080 port and it's selector identifies required pod, e.g.:

kind: Service
...
spec:
  selector:
    app: xxx
  ports:
    - name: 8080-tcp
      port: 8080
      protocol: TCP
      targetPort: 8080

路由必须映射到所需的OpenShift服务及其目标端口，例如:

The Route have to be mapped to required OpenShift Service and the its target port, e.g.:

kind: Route
...
spec:
  port:
    targetPort: 8080-tcp
  to:
    kind: Service
    name: xxx
    ...

然后，您可以使用路线的主人到达豆荚.

Then you can use the route's host to reach the pod.

这篇关于如何使用NodeJS和Express为OpenShift应用程序配置路由的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！