MySQL 的实时性能监控利器【转】

操作系统及MySQL数据库的实时性能状态数据尤为重要，特别是在有性能抖动的时候，这些实时的性能数据可以快速帮助你定位系统或MySQL数据库的性能瓶颈，就像你在Linux系统上使用「top，sar，iostat」等命令工具一样，可以立刻定位OS的性能瓶颈是在IO还是CPU上，所以收集/展示这些性能数据就更为重要，那都有哪些重要的实时性能状态指标可以反应出系统和MySQL数据库的性能负载呢？

目前在Linux跑MySQL是大多数互联网公司的标配，以上图片的性能数据指标项是我认为在Linux，MySQL，InnoDB中较为重要的实时状态数据，然而在以上图片Doing一栏其实更为重要，之所以把它叫做Doing，是因为「processlist，engine innodb status，locks」等指标项才真正反映了MySQL此时正在做什么。

我们来对标Oracle数据库看一下，在Oracle数据库中提供了「AWR，ASH，SQL Monitor」等众多诊断工具，可以一眼望穿数据库正在做什么，甚至都可以知道在过去30天内任何一个时间区间的性能负载和当时数据库正在做什么。

在MySQL中虽然有像「zabbix，PMM」等优秀的监控工具，但它们只能反映数据库历史的一些性能数据曲线，例如，TPS高了，临时表使用多了，有InnoDB Deadlocks，但对于MySQL当时的Doing，我只能说不够直接。如果你在现场，你可以抓到MySQL正在做什么，但是，你总有不在现场的时候，如果问你昨天晚上数据库的性能抖动是什么原因？怎样快速重现现场找到引起抖动的原因呢？

答案是可以使用「doDBA tools」，这是一款免费的基于控制台监控工具。

doDBA tools是什么

doDBA tools是一个基于控制台的远程监控工具，它不需要在本地/远程系统上安装任何软件，它可以实时收集操作系统、MySQL、InnoDB的实时性能状态数据，并可以生成Doing日志文件，来帮助你快速了解/优化系统及MySQL数据库。

特点

基于golang语言开发
可收集Linux、MySQL相关性能数据
可本地或远程收集，可多台
mytop --Like Linux TOP
基于并发生成Doing日志，复现现场
可记录到日志文件

doDBA tools 工作原理

远程收集系统信息是通过ssh（用户名密码或建立信任）的方式连接到远程服务器上收集，收集的方法都是通过读取Linux的proc下的等meminfo，diskstats，uptime，net，vmstat ，cpuinfo ，loadavg等文件，这和pmm，zabbix收集方式一致。

远程收集MySQL信息是通过 MySQL tcp连接到MySQL数据库上收集，只需要授予连接用户PROCESS、SELECT权限即可。

系统信息和MySQL信息的收集可以分离，如果只想收集系统信息，只需要提供系统用户名密码即可，如果只收集MySQL可以只提供MySQL连接信息，如果是rds用户，可以使用-rds参数，在使用mytop时会自动忽略系统信息的收集。

如何使用

Github主页:

https://github.com/dblucyne/dodba_tools

Download：

wget https://raw.githubusercontent.com/dblucyne/dodba_tools/master/doDBA --no-check-certificate

wget https://raw.githubusercontent.com/dblucyne/dodba_tools/master/doDBA.conf --no-check-certificate

chmod +x doDBA
下载下来就可以直接使用，不依赖于任何环境。

使用帮助：

./doDBA -help

  -c string

    configuration file.(default "doDBA.conf")

  -h string

    Connect to host/IP.

  -sys

    Print linux info.

  -myall

    Print linux and mysql info.

  -mysql

    Print mysql info.

  -innodb

    Print innodb info.

  -mytop

    Print mysql prcesslist,like top.

  -i duration

    refresh interval in seconds.(1s)

  -t int

    doing on Threads_running.(50)  
  -rds        
    Ignore system info.

  -log

    Print to file by day.

  -nocolor

    Print to nocolor.

使用实例

1. 收集Linux性能数据

./doDBA -h=10.1.x.xx -sys

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2. 收集MySQL性能数据

./doDBA -h=10.1.x.xx -mysql

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3. 收集InnoDB性能数据

./doDBA -h=10.1.x.xx -innodb

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyBpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuMC1jMDYwIDYxLjEzNDc3NywgMjAxMC8wMi8xMi0xNzozMjowMCAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvIiB4bWxuczp4bXBNTT0iaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wL21tLyIgeG1sbnM6c3RSZWY9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9zVHlwZS9SZXNvdXJjZVJlZiMiIHhtcDpDcmVhdG9yVG9vbD0iQWRvYmUgUGhvdG9zaG9wIENTNSBXaW5kb3dzIiB4bXBNTTpJbnN0YW5jZUlEPSJ4bXAuaWlkOkJDQzA1MTVGNkE2MjExRTRBRjEzODVCM0Q0NEVFMjFBIiB4bXBNTTpEb2N1bWVudElEPSJ4bXAuZGlkOkJDQzA1MTYwNkE2MjExRTRBRjEzODVCM0Q0NEVFMjFBIj4gPHhtcE1NOkRlcml2ZWRGcm9tIHN0UmVmOmluc3RhbmNlSUQ9InhtcC5paWQ6QkNDMDUxNUQ2QTYyMTFFNEFGMTM4NUIzRDQ0RUUyMUEiIHN0UmVmOmRvY3VtZW50SUQ9InhtcC5kaWQ6QkNDMDUxNUU2QTYyMTFFNEFGMTM4NUIzRDQ0RUUyMUEiLz4gPC9yZGY6RGVzY3JpcHRpb24+IDwvcmRmOlJERj4gPC94OnhtcG1ldGE+IDw/eHBhY2tldCBlbmQ9InIiPz6p+a6fAAAAD0lEQVR42mJ89/Y1QIABAAWXAsgVS/hWAAAAAElFTkSuQmCC" alt="" data-w="1075" data-ratio="0.3972093023255814" data-src="http://mmbiz.qpic.cn/mmbiz_png/tzia4bcY5HEJsacpAjgic5n0j8TSnC8hF7ibY5f5NwaHoaibauFBhNjBD5R5zdRXqEVQcgA1ic1X0jLmzZiccaicsgA3Q/0?wx_fmt=png" data-type="png" data-s="300,640" />

4. 收集MySQL及Linux性能数据

./doDBA -h=10.1.x.xx -myall

5. mytop --like linux top

./doDBA -h=10.1.x.xx -mytop

6. 借助Shell收集多台

cat ip.txt

10.1.x.x1
10.1.x.x2

Shell

cat ip.txt | while read ip;

 do

 echo $ip;

 ./doDBA -h=$ip -mysql -log </dev/null &

 done

7. 收集到日志文件

./doDBA -h=10.1.x.xx -mysql -log

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyBpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuMC1jMDYwIDYxLjEzNDc3NywgMjAxMC8wMi8xMi0xNzozMjowMCAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvIiB4bWxuczp4bXBNTT0iaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wL21tLyIgeG1sbnM6c3RSZWY9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9zVHlwZS9SZXNvdXJjZVJlZiMiIHhtcDpDcmVhdG9yVG9vbD0iQWRvYmUgUGhvdG9zaG9wIENTNSBXaW5kb3dzIiB4bXBNTTpJbnN0YW5jZUlEPSJ4bXAuaWlkOkJDQzA1MTVGNkE2MjExRTRBRjEzODVCM0Q0NEVFMjFBIiB4bXBNTTpEb2N1bWVudElEPSJ4bXAuZGlkOkJDQzA1MTYwNkE2MjExRTRBRjEzODVCM0Q0NEVFMjFBIj4gPHhtcE1NOkRlcml2ZWRGcm9tIHN0UmVmOmluc3RhbmNlSUQ9InhtcC5paWQ6QkNDMDUxNUQ2QTYyMTFFNEFGMTM4NUIzRDQ0RUUyMUEiIHN0UmVmOmRvY3VtZW50SUQ9InhtcC5kaWQ6QkNDMDUxNUU2QTYyMTFFNEFGMTM4NUIzRDQ0RUUyMUEiLz4gPC9yZGY6RGVzY3JpcHRpb24+IDwvcmRmOlJERj4gPC94OnhtcG1ldGE+IDw/eHBhY2tldCBlbmQ9InIiPz6p+a6fAAAAD0lEQVR42mJ89/Y1QIABAAWXAsgVS/hWAAAAAElFTkSuQmCC" alt="" data-w="795" data-ratio="0.2842767295597484" data-src="http://mmbiz.qpic.cn/mmbiz_png/tzia4bcY5HEJsacpAjgic5n0j8TSnC8hF7sI6Xy715gZWQRCuy48n8K0ehl0WomuxwwdM07iakuX5OO3IWucAwJrg/0?wx_fmt=png" data-type="png" data-s="300,640" />

8. 开启Doing功能

使用【-t】参数可以基于Threads_running的数量设置阈值，设置后可记录「processlist，engine innodb status」信息到dodba.log日志中，--复现现场。

./doDBA -h=10.1.x.xx -myall -t=3

aaarticlea/png;base64,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" alt="" data-w="1073" data-ratio="0.31780055917986955" data-src="http://mmbiz.qpic.cn/mmbiz_png/tzia4bcY5HEJsacpAjgic5n0j8TSnC8hF7sCY4Nlwbicicg2Q3lVficFVnGOx5sqdB016zcguWJv1Z8hJkefhOmBpxQ/0?wx_fmt=png" data-type="png" data-s="300,640" />

9. 查看Doing日志

tail -f dodba.log

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