待查看
sed命令笔记:https://www.xncoding.com/2016/09/20/linux/sed.html
http://www.cnblogs.com/stephen-liu74/archive/2011/11/17/2245130.html
http://www.cnblogs.com/edwardlost/archive/2010/09/17/1829145.html
awk命令笔记:https://www.xncoding.com/2016/09/22/linux/awk.html
搭建一套权威 DNS 服务架构:https://blog.phoenixlzx.com/2016/09/07/powerdns-admin-replacing-moedns/
使用 Unbound 搭建更好用的 DNS 服务器:https://blog.phoenixlzx.com/2016/04/27/better-dns-with-unbound/
limits:http://www.leexide.com/%E8%BF%90%E7%BB%B4%E5%9F%BA%E7%A1%80/linux/474.html
http://www.cnblogs.com/chris-cp/p/6667753.html
sysctl:https://www.wolf7.org/articles/2017/06/24/1498309505840.html
http://mp.weixin.qq.com/s/F3XzPITHIuHnNsckK8NDsw
open files:https://www.netadmintools.com/art295.html
文件描述符:http://www.itread01.com/articles/1490367461.html
http://jameswxx.iteye.com/blog/2096461
https://www.kernel.org/doc/Documentation/sysctl/fs.txt
https://www.jianshu.com/p/407c2baef92e
jmmalloc:https://www.cnblogs.com/hukey/p/6654285.html
MySQL常用命令:http://blog.51cto.com/solin/1875373
某电商网站数据库宕机故障解决实录(上):http://blog.51cto.com/oldboy/1431161
某电商网站数据库宕机故障解决实录(下):http://blog.51cto.com/oldboy/1431172
防止人为误操作:http://blog.51cto.com/oldboy/1321061
KILL详解:http://www.cnblogs.com/peida/archive/2012/12/20/2825837.html
MySQL增量恢复:https://www.cnblogs.com/yangliheng/p/5871189.html
MySQL主从复制:http://www.cnblogs.com/clsn/p/8150036.html
http://www.mike.org.cn/articles/mysql-master-slave-sync-conf-detail/
wait_timeout:https://www.cnblogs.com/ivictor/p/5979731.html