K8s: implementar el servicio nginx-ingress

1. Preparación de recursos

1. Extraiga el paquete de recursos y descomprímalo.

helm pull bitnami/nginx-ingress-controller   %拉取包
tar zxf nginx-ingress-controller-7.5.0.tgz   %解压（需要在/helm目录下）

2. Extraer imágenes relacionadas

拉取nginx-ingress-controller镜像并上传到harbor仓库：
docker load -i nginx-ingress-controller-0.44.0.tar  %直接load -i 已经下载好的包
docker push reg.westos.org/bitnami/nginx-ingress-controller:0.44.0-debian-10-r28
docker push reg.westos.org/bitnami/nginx:1.19.8-debian-10-r6

拉取metallb相关镜像并上传到harbor仓库：
docker load -i metallb.tar     %直接load -i 已经下载好的包
docker tag metallb/speaker:v0.9.5 reg.westos.org/metallb/speaker:v0.9.5 
docker push reg.westos.org/metallb/speaker:v0.9.5
docker tag metallb/controller:v0.9.5 reg.westos.org/metallb/controller:v0.9.5
docker push reg.westos.org/metallb/controller:v0.9.5

Dos, implementación de nginx-ingress

1. Edite el archivo values.yaml

global:            %指定全局
   imageRegistry: reg.westos.org   %harbor

2. Instale ipvsadm en cada nodo

yum install -y ipvsadm

3. Cambie al modo ipvs en el nodo principal.

kubectl edit configmap -n kube-system kube-proxy
strictARP: true
mode: "ipvs"

kubectl get pod -n kube-system |grep kube-proxy | awk '{system("kubectl delete pod "$1" -n kube-system")}'   %重启容器使上述更改生效

Tres, implementación de metallb

1. Edite metallb.yaml para crear un espacio de nombres:

mkdir metallb
vim metallb.yaml:添加下述内容
kind: Namespace
metadata:
  name: metallb-system
  labels:
    app: metallb

kubectl apply -f metallb.yaml 
kubectl  create  secret generic -n metallb-system memberlist --from-literal=secretkey="$(openssl rand -base64 128)"

2. Edite config.yaml y aplique

apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb-system
  name: config
data:
  config: |
    address-pools:       %地址池
    - name: default  
      protocol: layer2   %二层协议 
      addresses:
      - 172.25.1.100-172.25.1.200
kubectl apply -f config.yaml 

Cuatro, instalación

cd nginx-ingress-controller/
kubectl create namespace nginx-ingress-controller
helm install nginx-ingress-controller . -n nginx-ingress-controller 
kubectl -n nginx-ingress-controller get pod
kubectl -n nginx-ingress-controller get all