学习部署k8s 时，外界访问 NodePort 端口不成功，在查看日志 kubectl logs时，报错

[root@centos7-12 application]# kubectl logs whoami-deployment-678b64444d-r29dw 
Error from server (NotFound): the server could not find the requested resource ( pods/log whoami-deployment-678b64444d-r29dw)

原来是 /etc/hosts 文件的配置有错

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.1.1 centos7-12 centos7-12

192.168.1.132 vm132
192.168.1.133 vm133
192.168.1.134 vm134

我的主机名是 centos7-12，所以修改成：

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.1.1 centos7-12 centos7-12
192.168.1.132 centos7-12 centos7-12
192.168.1.133 centos7-13
192.168.1.134 centos7-14

就可以了，外界可以访问了，日志也可以查看了。

参考了：

https://blog.csdn.net/u012972390/article/details/112853747