在看尚硅谷的k8s视频中，学到ingress代理的时候，由于之前按照视频安装了V1.15.1,后面环境又出了问题，重新安装了
16.1的，为这次失败埋下了伏笔。
教案中的yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: nginx-dm
spec:
replicas: 2
template:
metadata:
labels:
name: nginx
spec:
containers:
- name: nginx
image: wangyanglinux/myapp:v1
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: nginx-svc
spec:
ports:
- port: 80
targetPort: 80
protocol: TCP
selector:
name: nginx
后面会贴出我修改的
创建后发现pod是没有问题的，但svc创建成功，却不能访问
[root@k8s-master mnt]# kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 4d23h nginx-svc ClusterIP 10.102.185.217 <none> 80/TCP 14m [root@k8s-master mnt]# curl 10.102.185.217 curl: (7) Failed connect to 10.102.185.217:80; 拒绝连接 [root@k8s-master mnt]# kubectl get pod NAME READY STATUS RESTARTS AGE nginx-64ddb75745-28lfx 1/1 Running 0 52s nginx-64ddb75745-mmmxx 1/1 Running 0 52s [root@k8s-master mnt]# kubectl get pod -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES nginx-64ddb75745-28lfx 1/1 Running 0 58s 10.244.1.29 k8s-node02 <none> <none> nginx-64ddb75745-mmmxx 1/1 Running 0 58s 10.244.2.32 k8s-node01 <none> <none> [root@k8s-master mnt]# curl 10.244.1.29 Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a> [root@k8s-master mnt]# curl 10.244.2.32 Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a>
[root@k8s-master mnt]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 172.17.0.1:31615 rr -> 10.244.2.31:80 Masq 1 0 0 TCP 172.17.0.1:32044 rr -> 10.244.2.31:443 Masq 1 0 0 TCP 192.168.122.1:31615 rr -> 10.244.2.31:80 Masq 1 0 0 TCP 192.168.122.1:32044 rr -> 10.244.2.31:443 Masq 1 0 0 TCP 192.168.180.130:31615 rr -> 10.244.2.31:80 Masq 1 0 0 TCP 192.168.180.130:32044 rr -> 10.244.2.31:443 Masq 1 0 0 TCP 10.96.0.1:443 rr -> 192.168.180.130:6443 Masq 1 3 0 TCP 10.96.0.10:53 rr -> 10.244.0.8:53 Masq 1 0 0 -> 10.244.0.9:53 Masq 1 0 0 TCP 10.96.0.10:9153 rr -> 10.244.0.8:9153 Masq 1 0 0 -> 10.244.0.9:9153 Masq 1 0 0 TCP 10.100.186.209:80 rr -> 10.244.2.31:80 Masq 1 0 0 TCP 10.100.186.209:443 rr -> 10.244.2.31:443 Masq 1 0 0 TCP 10.102.185.217:80 rr TCP 10.244.0.0:31615 rr -> 10.244.2.31:80 Masq 1 0 0 TCP 10.244.0.0:32044 rr -> 10.244.2.31:443 Masq 1 0 0 TCP 10.244.0.1:31615 rr -> 10.244.2.31:80 Masq 1 0 0 TCP 10.244.0.1:32044 rr -> 10.244.2.31:443 Masq 1 0 0 TCP 127.0.0.1:31615 rr -> 10.244.2.31:80 Masq 1 0 0 TCP 127.0.0.1:32044 rr -> 10.244.2.31:443 Masq 1 0 0 UDP 10.96.0.10:53 rr -> 10.244.0.8:53 Masq 1 0 0 -> 10.244.0.9:53 Masq 1 0 0
10.102.185.217:80 rr，并没有指向一个3xxxx端口
最后才发现是service里面的标签有问题，应该是版本的问题，因为视频中15.1就没有问题。
[root@k8s-master mnt]# cat ingress-http.yaml apiVersion: apps/v1 kind: Deployment metadata: name: nginx spec: replicas: 2 selector: matchLabels: app: nginx template: metadata: labels: app: nginx spec: containers: - name: nginx image: wangyanglinux/myapp:v1 imagePullPolicy: IfNotPresent ports: - containerPort: 80 [root@k8s-master mnt]#
[root@k8s-master mnt]# cat ingress-svc.yaml apiVersion: v1 kind: Service metadata: name: nginx-svc namespace: default spec: type: NodePort ports: - port: 80 targetPort: 80 protocol: TCP selector: app: nginx [root@k8s-master mnt]#
[root@k8s-master mnt]# vim ingress-svc.yaml [root@k8s-master mnt]# kubectl create -f ingress-svc.yaml service/nginx-svc created [root@k8s-master mnt]# kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 4d23h nginx-svc NodePort 10.111.72.240 <none> 80:31041/TCP 4s [root@k8s-master mnt]# curl 10.111.72.240 Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a>
所以在学习k8s的过程中，最好注意一下所用的版本