KubernetesNotes9:Ingress网络模型分析

1. 简介

#2、初始化master节点
kubeadm init \
--apiserver-advertise-address=192.168.92.138 \
--image-repository registry.cn-hangzhou.aliyuncs.com/google_containers \
--kubernetes-version v1.22.4 \
--service-cidr=10.96.0.0/16 \
--pod-network-cidr=192.168.0.0/16 \
--ignore-preflight-errors=all

• Service层网络

• Pod层网络

2. 安装Ingress

2.1 查看

ingress-nginx/index.md at v1.0.0-alpha.1 · kubernetes/ingress-nginx

attention The default configuration watches Ingress object from all namespaces. To change this behavior use the flag `--watch-namespace` to limit the scope to a particular namespace. !!! warning If multiple Ingresses define paths for the same host, the ingress controller merges the definitions. !!!

https://github.com/kubernetes/ingress-nginx/blob/v1.0.0-alpha.1/docs/deploy/index.md

2.2 找到下载的版本

# 1. 下载
wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.47.0/deploy/static/provider/baremetal/deploy.yaml
# 2. 修改镜像
vi deploy.yaml
# 3. 将images的值改为如下值
# registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/ingress-nginx-controller:v0.46.0
willdockerhub/ingress-nginx-controller:v1.0.0-alpha.1
# 4. 安装
kubectl apply -f deploy.yaml

• 注意：第三步修改对应images，查看网页，找到对应版本镜像

• 也可使使用阿里云的镜像加速

Docker Hub

https://hub.docker.com/r/willdockerhub/ingress-nginx-controller/tags

2.3 查看验证安装

# 5. 检查安装结果，可以合并查看
kubectl get pod,svc -n ingress-nginx
# 单独查看
root@docker01:/home# kubectl get pods -A
root@docker01:/home# kubectl get svc -A
# 如果是与服务器记得放行对应端口号

• 如果云服务器记得安全组放行端口号！🎈

2.4 浏览器访问

http://192.168.92.138:30763/
https://192.168.92.138:32527/

Introduction - NGINX Ingress Controller

There are three ways to customize NGINX: ConfigMap: using a Configmap to set global configurations in NGINX. Annotations: use this if you want a specific configuration for a particular Ingress rule. Custom template: when more specific settings are required, like open_file_cache, adjust listen options as rcvbuf or when is not possible to change the configuration through the ConfigMap.

https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/