1.创建一个测试用的deployment
kubectl run net-test --image=alpine --replicas=2 sleep 360000
2、查看获取IP情况
[root@linux ~]# kubectl get pod -o wide NAME READY STATUS RESTARTS AGE IP NODE net-test-5767cb94df-8vvqv 1/1 Running 0 37m 10.2.43.2 192.168.56.12 net-test-5767cb94df-fzklz 1/1 Running 0 37m 10.2.43.4 192.168.56.12 net-test1-8557578bc-mdwpf 1/1 Running 0 36m 10.2.91.7 192.168.56.13 net-test1-8557578bc-p946b 1/1 Running 0 36m 10.2.91.6 192.168.56.13 nginx-65899c769f-27h4q 1/1 Running 0 37m 10.2.43.3 192.168.56.12 nginx-65899c769f-5449m 1/1 Running 0 37m 10.2.43.12 192.168.56.12 nginx-65899c769f-mkvpg 1/1 Running 0 37m 10.2.43.6 192.168.56.12 nginx-65899c769f-vl7nb 1/1 Running 0 37m 10.2.43.8 192.168.56.12 nginx-65899c769f-xg8d2 1/1 Running 0 37m 10.2.43.7 192.168.56.12 nginx-deployment-7498dc98f8-54hq2 1/1 Running 0 5m 10.2.91.9 192.168.56.13 nginx-deployment-7498dc98f8-msqmb 1/1 Running 0 6m 10.2.91.8 192.168.56.13 nginx-deployment-7498dc98f8-whwz6 1/1 Running 0 5m 10.2.91.10 192.168.56.13 nginx-test-6b8f899d7d-bntc8 1/1 Running 0 37m 10.2.43.11 192.168.56.12
3、查看deployment
[root@linux ~]# kubectl get deployment NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE net-test 2 2 2 2 22d net-test1 2 2 2 2 37m nginx 5 5 5 5 41m nginx-deployment 3 3 3 3 51m nginx-test 1 1 1 1 1d
4、查看deployment详情
kubectl describe deployment nginx
5、查看pod详情
kubectl describe pod pod名称
如：kubectl describe pod nginx-test-6b8f899d7d-bntc8
6、跟新deployment版本
kubectl set image deployment/nginx-deployment nginx=nginx:1.12.2 --record
--record 表示记录日志，用于做回滚
以上每次执行后ip都会变化，在正常业务中是不满足我们的业务需求的，需要一个vip实现。这就用到service 的ip 也就是vip
7、编写一个service的yaml文件
vim nginx-service.yaml
kind: Service apiVersion: v1 metadata: name: nginx-service01 spec: selector: app: nginx ports: - protocol: TCP port: 80 targetPort: 80
8、创建service
kubectl create -f nginx-service.yaml
9、查看service
[root@linux ~]# kubectl get service NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes ClusterIP 10.1.0.1 <none> 443/TCP 23d nginx-service NodePort 10.1.232.55 <none> 80:30080/TCP 1d
10、测试
[root@linux ~]# curl --head http://10.1.232.55 HTTP/1.1 200 OK Server: nginx/1.12.2 Date: Fri, 29 Mar 2019 08:13:03 GMT Content-Type: text/html Content-Length: 612 Last-Modified: Tue, 11 Jul 2017 13:29:18 GMT Connection: keep-alive ETag: "5964d2ae-264" Accept-Ranges: bytes
11、查看service vip代理的后端
[root@linux ~]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 192.168.56.12:30080 rr persistent 10800 -> 10.2.91.8:80 Masq 1 0 0 -> 10.2.91.9:80 Masq 1 0 0 -> 10.2.91.10:80 Masq 1 0 0 TCP 10.1.0.1:443 rr persistent 10800 -> 192.168.56.11:6443 Masq 1 0 0 TCP 10.1.189.235:80 rr -> 10.2.91.8:80 Masq 1 0 0 -> 10.2.91.9:80 Masq 1 0 0 -> 10.2.91.10:80 Masq 1 0 0 TCP 10.1.232.55:80 rr persistent 10800 -> 10.2.91.8:80 Masq 1 0 0 -> 10.2.91.9:80 Masq 1 0 0 -> 10.2.91.10:80 Masq 1 0 1 TCP 10.2.43.0:30080 rr persistent 10800 -> 10.2.91.8:80 Masq 1 0 0 -> 10.2.91.9:80 Masq 1 0 0 -> 10.2.91.10:80 Masq 1 0 0 TCP 10.2.43.1:30080 rr persistent 10800 -> 10.2.91.8:80 Masq 1 0 0 -> 10.2.91.9:80 Masq 1 0 0 -> 10.2.91.10:80 Masq 1 0 0 TCP 127.0.0.1:30080 rr persistent 10800 -> 10.2.91.8:80 Masq 1 0 0 -> 10.2.91.9:80 Masq 1 0 0 -> 10.2.91.10:80 Masq 1 0 0