一、服务器角色
| 服务器角色 | 172.18.35.29 | 10.160.22.14 (MySQL Master) | 10.160.22.47 (MySQL Slave) |
| 监控点 | YES | NO | NO |
| 被监控点 | NO | YES | YES |
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二、慢查询配置
1、在被监控服务器安装如下组件
# tar xvzsf DBI-1.628.tar.gz
# cd DBI-1.628
# perl Makefile.PL
# make && make install
# tar xvzf DBD-mysql-4.024.tar.gz
# cd DBD-mysql-4.024
# perl Makefile.PL --mysql_config=/usr/local/mysql/bin/mysql_config --with-mysql=/usr/local/mysql
# make && make install
# tar xvzf IO-Socket-SSL-1.972.tar.gz
# cd IO-Socket-SSL-1.972
# perl Makefile.PL
# make && make install
# tar xvzf percona-toolkit-2.2.7.tar.gz
# cd percona-toolkit-2.2.7
# perl Makefile.PL
# make && make install
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2、开启 MySQL 本身的慢查询功能
slow_query_log = 1
slow_query_log_file = /data/dbdata/slow_query.log
long_query_time = 1
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3、在被监控服务器（10.160.22.14）上添加如下 crontab 项
00 * * * * /usr/bin/pt-query-digest --user=mtop_user --password=123456 --port=3306 --review h=172.18.35.29,D=mysqlmtop,t=mysql_slow_query_review_4 --history h=172.18.35.29,D=mysqlmtop,t=mysql_slow_query_review_history_4 --no-report --limit=0%/data/dbdata/slow_query.log >/dev/null 2>&1
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4、在被监控服务器（0.160.22.47）上添加如下 crontab 项
00 * * * * /usr/bin/pt-query-digest --user=mtop_user --password=123456 --port=3306 --review h=172.18.35.29,D=mysqlmtop,t=mysql_slow_query_review_5 --history h=172.18.35.29,D=mysqlmtop,t=mysql_slow_query_review_history_5 --no-report --limit=0%/data/dbdata/slow_query.log >/dev/null 2>&1
以上数据表 mysql_slow_query_review、mysql_slow_query_review_history 的后缀为主机 ID，如图：
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5、为被监控的服务器开启慢查询
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6、效果展示
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三、工具组件配置
1、在被监控服务器（172.18.35.29）上添加如下 crontab 项
*/30 * * * * cd /usr/local/mysqlmtop; ./check_mysql_widget_bigtable.py >/dev/null 2>&1
*/1 * * * * cd /usr/local/mysqlmtop; ./check_mysql_widget_hit_rate.py >/dev/null 2>&1
*/1 * * * * cd /usr/local/mysqlmtop; ./check_mysql_widget_connect.py >/dev/null 2>&1
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2、效果展示
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四、资源监控配置
1、被监控服务器上的设置
NET-SNMP服务安装（注意版本）：
# tar xvzf net-snmp-5.3.2.tar.gz
# cd net-snmp-5.3.2
# ./configure --prefix=/usr/local/snmp \
--enable-mfd-rewrites \
--with-default-snmp-version="2" \
--with-sys-contact="lovezym5@qq.com" \
--with-sys-location="China" \
--with-logfile="/var/log/snmpd.log" \
--with-persistent-directory="/var/net-snmp"
# make && make install
# cp EXAMPLE.conf /usr/local/snmp/share/snmp/snmpd.conf
# vim /usr/local/snmp/share/snmp/snmpd.conf
com2sec notConfigUser 172.18.35.29 mysqlmtop
group notConfigGroup v1 notConfigUser
group notConfigGroup v2c notConfigUser
group notConfigGroup usm notConfigUser
view all included .1 80
access notConfigGroup "" any noauth exact all none none
......
服务启动：
# /usr/local/snmp/sbin/snmpd -c /usr/local/snmp/share/snmp/snmpd.conf
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2、监控服务器上的设置
NET-SNMP服务安装：
# tar xvzf net-snmp-5.3.2.tar.gz
# cd net-snmp-5.3.2
# ./configure --prefix=/usr/local/snmp \
--enable-mfd-rewrites \
--with-default-snmp-version="2" \
--with-sys-contact="lovezym5@qq.com" \
--with-sys-location="China" \
--with-logfile="/var/log/snmpd.log" \
--with-persistent-directory="/var/net-snmp"
# make && make install
# cd /usr/local/mysqlmtop
# ln -s /usr/local/snmp/bin/snmpwalk /usr/bin/snmpwalk
# ln -s /usr/local/snmp/bin/snmpdf /usr/bin/snmpdf
# vim /usr/local/mysqlmtop/check_linux_resource.sh
host="172.18.35.29"
port="3306"
user="mtop_user"
password="123456"
dbname="mysqlmtop"
......
# vim /usr/local/mysqlmtop/etc/config.ini
[linux_server]
server_ip="10.160.22.14|10.160.22.47"
重启监控服务：
# mtopctl stop && mtopctl start
问题修正（否则无法获取内存信息）：
# vim /usr/local/mysqlmtop/check_linux_resource.sh
totalmem=`/usr/bin/snmpdf -v1 -c mysqlmtop ${ip} | awk '/Real Memory/ {print $3}'`
usedmem=`/usr/bin/snmpdf -v1 -c mysqlmtop ${ip} | awk '/Real Memory/ {print $4}'`
crontab 内容添加：
*/1 * * * * cd /usr/local/mysqlmtop; ./check_linux_resource.py >/dev/null 2>&1
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3、效果展示
其中服务器安装环境：
XAMPP+Python+MySQLdb
windows可直接执行：mtop.py运行数据采集服务。