两台测试机192.168.0.182和192.168.0.183,root账号登陆，centos系统
1.分别配置hostname：
vi /etc/sysconfig/network
两台分别配置 HOSTNAME=centos-182 和 HOSTNAME=centos-183

2.分别配置本地host解析：
vi /etc/hosts 两台配置一样内容
192.168.0.182 centos-182
192.168.0.183 centos-183

3.分别配置ssh免密码登陆：
ssh-keygen，输出内容直接三个回车，在/root/.ssh/目录下生成id_rsa和id_rsa.pub
cat id_rsa.pub >> authorized_keys
在192.168.0.183上执行
ssh-keygen，输出内容直接三个回车，在/root/.ssh/目录下生成id_rsa和id_rsa.pub
scp id_rsa.pub root@192.168.0.182:/root/.ssh/
在192.168.0.182的/root/.ssh/下
cat id_rsa.pub >> authorized_keys
chmod 600 authorized_keys
再将authorized_keys文件scp到192.168.0.183上
scp authorized_keys root@192.168.0.183:/root/.ssh/

4.分别配置known_hosts：
在192.168.0.182和192.168.0.183上分别执行ssh centos-182 和 ssh centos-183，出现类似以下内容，输入yes之后回车

The authenticity of host 'centos-182 (192.168.0.182)' can't be established.
RSA key fingerprint is 75:93:cd:ba:d3:d4:5a:70:8c:dd:4c:11:43:fe:b4:00.
Are you sure you want to continue connecting (yes/no)? yes

配置成功之后，在两台机子上分别执行ssh centos-182 和 ssh centos-183，可以不用输入密码登陆上去说明配置成功。

5.在192.168.0.183上安装MySQL数据库，具体可以参见http://willvvv.iteye.com/blog/1460568

6.在192.168.0.182上安装tsung，具体可以参见http://willvvv.iteye.com/blog/1469324

7.在192.168.0.182上编写tsung脚本，进行测试
mkdir -p /root/.tsung
cd /root/.tsung
vi tsung.xml

<?xml version="1.0"?>
<!DOCTYPE tsung SYSTEM "/usr/local/share/tsung/tsung-1.0.dtd">
<tsung loglevel="debug" dumptraffic="true">

  <clients>
    <client host="localhost" use_controller_vm="true"/>
  </clients>

  <!-- Server side setup -->
 <servers>
  <server host="centos-183" port="3306" type="tcp"/>
 </servers>

  <monitoring>
   <monitor host="centos-183"/>
  </monitoring>

 <load>
  <arrivalphase phase="1" duration="1" unit="minute">
    <users interarrival="3" unit="second"></users>
  </arrivalphase>
 </load>

 <sessions>
  <session probability="100" name="mysql-example" type="ts_mysql">
      <request>
        <mysql type="connect" />
      </request>
      <request>
        <mysql type="authenticate" database="yourdb" username="youruser" password="yourpassword" />
      </request>
      <request>
        <mysql type="sql">SHOW TABLES</mysql>
      </request>
      <request>
        <mysql type="sql">SELECT * FROM yourtable</mysql>
      </request>
      <request>
        <mysql type="close"></mysql>
      </request>
  </session>
 </sessions>
</tsung>

注意：<server host="centos-183" port="3306" type="tcp"/> 和 <monitor host="centos-183"/> host属性需要填写配置的host而不是IP或者localhost
不然就会出现Host key verification failed

tsung start

8.在192.168.0.183上执行tcpdump查看sql执行情况
tcpdump -i eth0 -s 0 -l -w - dst port 3306 | strings

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9.执行完毕使用http://willvvv.iteye.com/blog/1469324上python启动web server直接看图形，注意iptables要开启8000端口

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