三节点master修改apiserver端口

因业务需求，需要把apiserver的6443端口改成其它端口，k8s集群是二进制部署的，有三个master节点，调整方法如下

1.修改apiserver启动service中的配置

查看apiserver的service文件位置
systemctl status kube-apiserver，找到/usr/lib/systemd/system/kube-apiserver.service
修改--secure-port=6443为6444

如果想看详细的kube-apiserver日志，可以用journalctl -u kube-apiserver.service 

2.配置生效

systemctl daemon-reload
systemctl restart kube-apiserver

3.修改haproxy配置文件

vim /etc/haproxy/haproxy.cfg
修改下面IP的端口为6444
server k8s-api-10.253.19.175      10.253.19.175:6444  check
server k8s-api-10.253.19.174      10.253.19.174:6444  check
server k8s-api-10.253.19.180      10.253.19.180:6444  check
然后重启haproxy
systemctl restart haproxy

以上操作三个master节点都要操作

4.修改kubernetes服务

[root@k8s-master1-ceshi haproxy]# kubectl get svc
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   7d17h

kubectl edit svc kubernetes修改targetPort为6444
...
 ports:
  - name: https
    port: 443
    protocol: TCP
    targetPort: 6444
...

5.修改endpoint对应端口

kubectl edit ep kubernetes
...
subsets:
- addresses:
  - ip: 10.253.19.174
  - ip: 10.253.19.175
  - ip: 10.253.19.180
  ports:
  - name: https
    port: 6444  #修改端口为6444
    protocol: TCP