helm部署ingress nginx controller-CFANZ编程社区

helm是用于ingress nginx controller部署的一个客户端工具，有专用的服务站点和资源仓库。

helm官方网站链接

一、仓库添加：

1 ）Add Repository (stable)

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

Add Repository (experimental)

$ helm repo add nginx-edge https://helm.nginx.com/edge
$ helm repo update

2 ）Install Packages (stable)

$ helm install my-release nginx-stable/nginx-ingress [--version 0.4.1]

Install Packages (experimental)

$ helm install my-release nginx-edge/nginx-ingress --devel

二、清理old

1 删除namespace:

root@k8s-master:~# kubectl delete ns ingress-nginx

2 删除类：

root@k8s-master:~# kubectl get ingressClass
NAME    CONTROLLER             PARAMETERS   AGE
nginx   k8s.io/ingress-nginx   <none>       33h
root@k8s-master:~# kubectl delete ingressClass nginx
ingressclass.networking.k8s.io "nginx" deleted
root@k8s-master:~# kubectl get ingressClass
No resources found
root@k8s-master:~#

三、安装ingress nginx controller

1 查看仓库列表：

root@k8s-master:~/work/ing# helm repo list
NAME          URL                          
nginx-stable  https://helm.nginx.com/stable
root@k8s-master:~/work/ing#

2 安装ingress-nginx-controller:

root@k8s-master:~/work/ing# helm upgrade --install ingress-nginx nginx-stable/nginx-ingress  --namespace ingress-nginx --create-namespace --set controller.service.type=NodePort --set controller.admissionWebhooks.enabled=false
Release "ingress-nginx" does not exist. Installing it now.
NAME: ingress-nginx
LAST DEPLOYED: Mon Feb  7 15:15:20 2022
NAMESPACE: ingress-nginx
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
The NGINX Ingress Controller has been installed.
root@k8s-master:~/work/ing#

3 查看创建好的ingress nginx controller资源:

root@k8s-master:~/work/ing# kubectl get ns
NAME              STATUS   AGE
default           Active   4d1h
ingress-nginx     Active   50s
kube-node-lease   Active   4d1h
kube-public       Active   4d1h
kube-system       Active   4d1h
root@k8s-master:~/work/ing# kubectl get pods -n ingress-nginx
NAME                                           READY   STATUS    RESTARTS   AGE
ingress-nginx-nginx-ingress-5bb65cf4c5-5xvrg   1/1     Running   0          62s
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# kubectl get deploy -n ingress-nginx
NAME                          READY   UP-TO-DATE   AVAILABLE   AGE
ingress-nginx-nginx-ingress   1/1     1            1           68s
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# kubectl get svc -n ingress-nginx
NAME                          TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)                      AGE
ingress-nginx-nginx-ingress   NodePort   10.10.247.243   <none>        80:32185/TCP,443:32507/TCP   73s
root@k8s-master:~/work/ing#

4 查看ingress nginx controller的版本：

root@k8s-master:~/work/ing# kubectl exec -it ingress-nginx-nginx-ingress-5bb65cf4c5-5xvrg -n ingress-nginx  /bin/bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
nginx@ingress-nginx-nginx-ingress-5bb65cf4c5-5xvrg:/$ 
nginx@ingress-nginx-nginx-ingress-5bb65cf4c5-5xvrg:/$ ./nginx-ingress --version
Version=2.1.0 GitCommit=2665e338252db9a183aed31ad230c2665ce1ffb1 Date=2022-01-06T16:46:37Z
nginx@ingress-nginx-nginx-ingress-5bb65cf4c5-5xvrg:/$

5 修改pod副本数量：

root@k8s-master:~/work/ing# kubectl get deploy -n ingress-nginx
NAME                          READY   UP-TO-DATE   AVAILABLE   AGE
ingress-nginx-nginx-ingress   1/1     1            1           17m
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# kubectl edit deploy ingress-nginx-nginx-ingress -n ingress-nginx

helm部署ingress nginx controller_运维

修改pods共享host node 的网络：

helm部署ingress nginx controller_Pod_02

查看ingress nginx controller pod 暴露的访问节点：

helm部署ingress nginx controller_nginx_03

查看ingress nginx controller 暴露的访问端口：

helm部署ingress nginx controller_linux_04

四、测试ingress

1 部署deploy、service、ingress

root@k8s-master:~/work/ing# kubectl apply -f delopy1.yaml 
deployment.apps/deployment1 created
service/svc-1 created
root@k8s-master:~/work/ing# kubectl apply -f delopy2.yaml 
deployment.apps/deployment2 created
service/svc-2 created
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# kubectl apply -f ingress-rule.yaml 
ingress.networking.k8s.io/ingress1 created
ingress.networking.k8s.io/ingress2 created
root@k8s-master:~/work/ing#

2 通过service访问pod:

helm部署ingress nginx controller_运维_05

root@k8s-master:~/work/ing# kubectl get svc -o wide
NAME         TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                      AGE    SELECTOR
kubernetes   ClusterIP   10.10.0.1      <none>        443/TCP                      4d2h   <none>
svc-1        NodePort    10.10.197.22   <none>        80:31416/TCP,443:32649/TCP   98s    app=nginx-1
svc-2        NodePort    10.10.69.243   <none>        80:32713/TCP,443:30281/TCP   95s    app=nginx-2
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# curl  10.10.197.22
Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a>
root@k8s-master:~/work/ing# curl  10.10.197.22
Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a>
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# 
root@k8s-master:~/work/ing# curl 10.10.69.243 
Hello MyApp | Version: v2 | <a href="hostname.html">Pod Name</a>
root@k8s-master:~/work/ing# curl 10.10.69.243 
Hello MyApp | Version: v2 | <a href="hostname.html">Pod Name</a>
root@k8s-master:~/work/ing#

3 通过ingress访问pod:
vim /etc/hosts添加以下内容：

192.168.1.101 k8s-master
192.168.1.102 k8s-node1
192.168.1.103 k8s-node2
192.168.1.103 www1.atguigu.com
192.168.1.103 www2.atguigu.com
192.168.1.102 www1.atguigu.com
192.168.1.102 www2.atguigu.com

snap 安装k8s组件：

snap remove kubelet
snap remove kubeadm
snap remove kubectl
snap remove kube-proxy
exit

snap install kubelet --channel=1.23/stable --classic
snap install kubeadm --channel=1.23/stable --classic
snap install kubectl --channel=1.23/stable --classic
snap install kube-proxy --channel=1.23/stable --classic