部署一个内网 LB 版的 nginx ingress[草稿]

1. 为内网LB版本的ingress创建一个独立的命名空间和docker-registry，(以仓库地址: uhub.service.ucloud.cn/ucloud_pts为例) 参考操作如下:
   kubectl create ns ingress-inner
   kubectl create secret docker-registry registry-secret-name
   --namespace=ingress-inner
   --docker-server=uhub.service.ucloud.cn/ucloud_pts
   --docker-username='xxxxxxxxxxx'
   --docker-password='xxxxxxxxxxx'

2. 获取 ingress-nginx chart包，修改为定制的ULB内网版本
   helm repo add ingress https://kubernetes.github.io/ingress-nginx
   helm repo update
   helm fetch ingress/ingress-nginx
   tar -xvpf ingress-nginx-3.33.0.tgz

编辑 ingress-nginx/Chart.yaml 修改以下字段
name: ingress-nginx-inner

修改 ingress-nginx/templates/controller-service.yaml 追加如下配置
metadata:
annotations:
service.beta.kubernetes.io/ucloud-load-balancer-type: inner

2. 安装修改后的chart包
   helm package ingress-nginx
   cat > ingress-inner-value.yaml << EOF
   imagePullSecrets:

• name: registry-secret-name
  controller:
  name: controller
  ingressClass: nginx-inner
  image:
  repository: uhub.service.ucloud.cn/ucloud_pts/controller
  tag: "v0.45.0"
  digest: sha256:c892e4e39885a16324d38b213d0dd42f56d183e93836b28d051c5476b1418bc1
  admissionWebhooks:
  patch:
  enabled: true
  image:
  repository: uhub.service.ucloud.cn/ucloud_pts/kube-webhook-certgen
  EOF
  helm del ingress-inner -n ingress-inner
  helm upgrade --install ingress-inner /root/ingress-nginx-inner-3.33.0.tgz -n ingress-inner --values=ingress-inner-value.yaml