https://blog.51cto.com/13043516/2334494?source=dra ----Centos7 xfs文件系统扩展root根分区
https://www.cnblogs.com/Dev0ps/p/7874381.html 面试整理
https://blog.51cto.com/oldboy/1884326 nginx-proxy
https://www.cnblogs.com/yaohong/p/7601470.html 部署openstack
https://www.cnblogs.com/linhaifeng/p/6264636.html#_label1 openstack架构
https://blog.csdn.net/z_fighting/article/details/78524093 centos搭建本地Yum仓
https://www.processon.com/;jsessionid=53189FC812914B0F19F40C8A582ECF67.jvm1 免费制图软件
http://linux.51yip.com/ 命令手册
https://www.cnblogs.com/kevingrace/p/7612741.html 磁盘挂载
https://www.cnblogs.com/kaishirenshi/p/7724963.html 日志分析
https://www.cnblogs.com/yorkyang/p/6294894.html find命令
https://www.cnblogs.com/liuzhengliang/p/4609632.html 查看端口，进程
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