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nrk-simplenrk-simple
lesson 3
Jul 28, 2020
5c99cc1 · Jul 28, 2020

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4-ingress.yaml
4-ingress.yaml
Jul 28, 2020
4-ns-po.yaml
4-ns-po.yaml
Jul 28, 2020
Readme.md
Readme.md
Jul 28, 2020

Readme.md

Урок про nginx ingress controller

cd ../4

Установим Helm

https://helm.sh/docs/intro/install/#from-homebrew-macos

Устаноим nginx ingress contoller

helm repo add nginx-stable https://helm.nginx.com/stable
helm repo update
helm install nginx-ingress nginx-stable/nginx-ingress

Установим наше тестовое приложение ( ns + pod + service )

kubectl apply -f 4-ns-po.yaml

Установим ingress ресурс

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nginx
  annotations:
    kubernetes.io/ingress.class: "nginx"
  namespace: demo-ns
spec:
  rules:
  - host: nginx-first.example.com
    http:
      paths:
      - backend:
          serviceName: nginx
          servicePort: 80
        path: /
kubectl apply -f 4-ingress.yaml

Сделаем запросы с локальной машины

Вычислим адрес INGRESS

$ kubectl describe svc nginx-ingress-nginx-ingress | grep -e 'LoadBalancer Ingress:' -e 'External Traffic Policy:'
LoadBalancer Ingress:     178.154.247.129
External Traffic Policy:  Local

Запрос без hostname выдаст 404

nrkk-osx:2 nrkk$ curl 178.154.247.129
<html>
<head><title>404 Not Found</title></head>
<body>

Запрос с hostname nginx-first.example.com выдаст нам наш pod

$ curl -H "Host: nginx-first.example.com" http://178.154.247.129/
<!DOCTYPE html>
<html>

Посмотрим логи - чтобы увидеть datapath

Сначала на ingress

$ kubectl get po
NAME                                          READY   STATUS    RESTARTS   AGE
nginx-ingress-nginx-ingress-7ff4fd9bb-kzkqp   1/1     Running   0          12m
$ kubectl logs nginx-ingress-nginx-ingress-7ff4fd9bb-kzkqp

37.204.229.220 - - [28/Jul/2020:12:54:34 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.54.0" "-"

37.204.229.220 - это ваш IP адрес

Теперь в POD

$ kubectl logs -n demo-ns pod/nginx

10.160.0.165 - - [28/Jul/2020:12:54:34 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.54.0" "37.204.229.220"

10.160.0.165 - это IP адрес POD ingres

$ kubectl get po -o wide
NAME                                          READY   STATUS    RESTARTS   AGE   IP             NODE                        NOMINATED NODE   READINESS GATES
nginx-ingress-nginx-ingress-7ff4fd9bb-kzkqp   1/1     Running   0          14m   10.160.0.165   cl197hq2nt1jltu5tmuc-yjyf   <none>           <none>

Удалим лабу

kubectl delete ns demo-ns

helm uninstall nginx-ingress