kubernetes安装ingress-nginx的步骤

系统版本：CentOs8.1
k8s版本：v1.21.3
containerd版本：ctr containerd.io 1.4.3

一: 准备yaml文件

github仓库地址：
wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/mandatory.yaml
以前用如上的地址下载，现在好像是不灵了

那我们选择ingress-nginx 0.20.0版本 https://github.com/kubernetes/ingress-nginx/tree/nginx-0.20.0

下载 service-nodeport.yaml
https://github.com/kubernetes/ingress-nginx/blob/nginx-0.20.0/deploy/provider/baremetal/service-nodeport.yaml

下载 mandatory.yaml
https://github.com/kubernetes/ingress-nginx/blob/nginx-0.20.0/deploy/mandatory.yaml

将镜像地址替换为阿里可下载的地址（略）

#修改service-nodeport.yaml
vim service-nodeport.yaml

apiVersion: v1
kind: Service
metadata:
name: ingress-nginx
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
spec:
type: NodePort
ports:
- name: http
port: 80
targetPort: 80
protocol: TCP
nodePort: 32080 #http这里修改
- name: https
port: 443
targetPort: 443
protocol: TCP
nodePort: 32443 #https这里修改
selector:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx

部署
kubectl create namespace ingress-nginx
kubectl apply -f mandatory.yaml
kubectl apply -f service-nodeport.yaml

执行mandatory.yaml有异常报错

error: unable to recognize “mandatory.yaml”: no matches for kind “Deployment” in version “extensions/v1beta1”

解决方法， 修改mandatory.yarml文件
将apiVersion: extensions/v1beta1 修改成 apiVersion: apps/v1
再次执行
kubectl apply -f mandatory.yaml

正常

访问nodeport看看是否有返回信息
http://192.168.43.152:32080/

测试阶段
配置个服务

[root@ck8s1 ingress]# cat ingress-deploy-demon.yaml 
apiVersion: v1
kind: Service
metadata:
  name: csctbb
  namespace: default
spec:
  selector:
    app: csctbb
    release: canary
  ports:
  - name: http
    port: 80
    targetPort: 80
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: csctbb-deploy
spec:
  replicas: 5
  selector:
    matchLabels:
      app: csctbb
      release: canary
  template:
    metadata:
      labels:
        app: csctbb
        release: canary
    spec:
      containers:
      - name: csctbb
        image: ikubernetes/myapp:v2
        ports:
        - name: httpd
          containerPort: 80

配置ingress

[root@ck8s1 ingress]# cat ingress-test.yaml 
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-csctbb
  namespace: default
  annotations: 
    kubernetes.io/ingress.class: "nginx"
spec:
  rules:
  - host: csctbb.csctbb.com
    http:
      paths:
      - path: 
        backend:
          serviceName: csctbb
          servicePort: 80

部署服务

[root@ck8s1 ingress]# kubectl apply -f ingress-deploy-demon.yaml 
service/csctbb created
deployment.apps/csctbb-deploy created
[root@ck8s1 ingress]# kubectl apply -f ingress-test.yaml 
Warning: extensions/v1beta1 Ingress is deprecated in v1.14+, unavailable in v1.22+; use networking.k8s.io/v1 Ingress
ingress.extensions/ingress-csctbb created

查看ingress
[root@ck8s1 ingress]# kubectl get ingress
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress-csctbb csctbb.csctbb.com 80 22s

配置host访问
192.168.43.1 csctbb.csctbb.com

完成 ！