Kubernetes:通过入口将非HTTP请求路由到容器

问题描述

1. 我在Mac OS上使用与docker捆绑在一起的本地kubernetes.
2. 我已经安装了 nginx-ingress-controller .
3. 我设法通过入口发送外部http 请求到我的kubernetes托管容器(例如从本地浏览器).所有请求都是通过nginx端口80或443发送的.

1. I use a local kubernetes bundled with docker on Mac OS.
2. I've installed the nginx-ingress-controller.
3. I manged to send external http request via ingress to my kubernetes managed containers (e.g. from my local browser). All request are sent via the nginx ports 80 or 443.

问题是，我只能通过我的ngnix控制器路由http或https请求.如何通过入口向容器发送非HTTP请求(例如数据库或corba)?

The problem is, that I can only route http or https requests via my ngnix controller.How can I send non HTTP Requests (e.g. database or corba) via ingress to my containers?

推荐答案

通过入口机制不能很好地支持它，它是未解决问题.
有一种使用nginx-ingress的tcp或udp流量的解决方法，它将使用configmap将暴露的端口映射到kubernetes服务.
参见此文档.

This is not well supported via the ingress mechanism and is an open issue.
There is a work around for tcp or udp traffic using nginx-ingress which will map an exposed port to a kubernetes service using a configmap.
See this doc.

使用tcp-services-configmap(和/或udp-services-configmap)参数启动入口控制器.

Start the ingress controller with the tcp-services-configmap (and/or udp-services-configmap) argument.

args:
- "/nginx-ingress-controller"
- "--tcp-services-configmap=default/nginx-tcp-configmap"
- "--v=2"

部署配置图:

apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-tcp-configmap
data:
  9000: "default/example-service:8080"

其中9000是裸露的端口，8080是服务端口

where 9000 is the exposed port and 8080 is the service port

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