安装:
先下载:
wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.1.2/deploy/static/provider/cloud/deploy.yaml
如果打不开,请使用国内源。
修改里面Service name: ingress-nginx-controller 的一段,找到type:
type 改为NodePort ,因为你没有LoadBalance可测试。
type: NodePort
然后:
kubectl apply -f deploy.yaml
查看ingress-controllor
kubectl get pods --namespace=ingress-nginx
执行这个命令:
kubectl wait --namespace ingress-nginx \
--for=condition=ready pod \
--selector=app.kubernetes.io/component=controller \
--timeout=120s
出现:condition met
安装完毕
查看服务、出现如下:
# kubectl get service ingress-nginx-controller --namespace=ingress-nginx
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
ingress-nginx-controller NodePort 10.103.21.218 <none> 80:32317/TCP,443:32337/TCP 13m
记住这里的端口:32317 (实例)
创建deploy 和service:
kubectl create deployment demo --image=httpd --port=80
kubectl expose deployment demo
创建ingress:
kubectl create ingress demo --class=nginx \
--rule www.demo.io/=demo:80
查看你的ingress controllor 所在node:
ingress-nginx-controller-776cdbb5d4-skxtw 1/1 Running 5 19m
[root@master1 leon]# kubectl get pod -n ingress-nginx -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
ingress-nginx-admission-create-bb8p8 0/1 Completed 0 19m 10.244.1.15 node1 <none> <none>
ingress-nginx-admission-patch-796mz 0/1 Completed 1 19m 10.244.1.16 node1 <none> <none>
**ingress-nginx-controller-776cdbb5d4-skxtw 1/1 Running 5 19m 10.244.2.18 node2** <none> <none>
注意:是Node2,那么浏览器访问的IP,就是NODE2的ip(实例:192.168.132.52)
则在你的浏览器所在机器hosts表增加记录:
192.168.132.52 www.demo.io
然后用浏览器访问:
http://www.demo.io:32317,就可以看到“It works!”
表示成功。
对外暴露端口改成80
修改下载下来的deploy.yaml 还是 name: ingress-nginx-controller ,这一段。
增加 NodePort:80 和NodePort:443
如下:
apiVersion: v1
kind: Service
metadata:
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
app.kubernetes.io/version: 1.1.2
helm.sh/chart: ingress-nginx-4.0.18
name: ingress-nginx-controller
namespace: ingress-nginx
spec:
externalTrafficPolicy: Local
ipFamilies:
- IPv4
ipFamilyPolicy: SingleStack
ports:
- appProtocol: http
name: http
port: 80
nodePort: 80
protocol: TCP
targetPort: http
- appProtocol: https
name: https
port: 443
nodePort: 443
protocol: TCP
targetPort: https
selector:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
type: NodePort
这样直接执行,会出现错误:nodePort: Invalid value valid ports is 30000-32767,
是因为k8s的node节点的端口默认被限制在30000-32767的范围,
先修改kube的默认配置:
vi /etc/kubernetes/manifests/kube-apiserver.yaml
在spec.containers.command的最后面加上 --service-cluster-ip-range 这一行,如下内容
- --service-node-port-range=1-65535
最后 重启 kubelet
systemctl daemon-reload
systemctl restart kubelet
然后再执行:
kubectl apply -f deploy.yaml
然后打开浏览器查看:
搞定!