Nagios监控数据库的方法

Nagios监控数据库的方法：

check_mysql_health监控数据库

1、check_mysql_health安装

在监控服务器上安装

#cd/usr/local/src/tarbag

#wgethttp://labs.consol.de/wp-content/uploads/2010/03/check_mysql_health-2.1.1.tar.gz

#tarzxvfcheck_mysql_health-2.1.1.tar.gz-C../software/

#./configure\

 –prefix=/usr/local/nagios/\

 –with-nagios-user=nagios\

 –with-nagios-group=nagios\

 –with-perl=/usr/bin/perl\

 –with-statefiles-dir=/usr/local/nagios/var/tmp\

–with-perlperl\程序运行路径

–with-statefiles-dir状态信息文件路径

#make

#makeinstall

2、check_mysql_health选项

Options:

–hostname

thedatabaseserver’shostname

–port

thedatabase’sport.(default:3306)

–socket

thedatabase’sunixsocket.

–username

themysqldbuser

–password

themysqldbuser’spassword

–database

thedatabase’sname.(default:information_schema)

–warning

thewarningrange

–critical

thecriticalrange

–mode

themodeoftheplugin.selectoneofthefollowingkeywords:

connection-time连接到服务器上的时间

uptime服务器运行的时间

threads-connected当前连接到数据库的连接数

threadcache-hitrate线程缓存命中率

slave-lagslave落后master多少时间

slave-io-runningslave复制是否正常

slave-sql-runningslave复制是否正常

qcache-hitrate查询缓存命中率

qcache-lowmem-prunes(Querycacheentriesprunedbecauseoflowmemory)

keycache-hitrate(MyISAMkeycachehitrate)

bufferpool-hitrate(InnoDBbufferpoolhitrate)

bufferpool-wait-free(InnoDBbufferpoolwaitsforcleanpageavailable)

log-waits(InnoDBlogwaitsbecauseofatoosmalllogbuffer)

tablecache-hitrate表缓存命中率

table-lock-contention表锁率

index-usage索引使用情况

tmp-disk-tables(Percentoftemptablescreatedondisk)

slow-queries慢查询

long-running-procs长时间运行的进程

cluster-ndbd-runningndb节点运行状况

sql返回一个数字的任何SQL语句

3、check_mysql_health监控配置

监控服务器：10.59.97.42

MySQL数据授权：

在要监控的MySQL数据库服务器上

mysql>grantusageon*.*[email protected]“honyho@8123“;

 mysql>flushprivileges;

在监控服务器上

1》查看当前连接到数据库的连接数

#./check_mysql_health–hostname10.59.97.57–usernamehonyho–passwordhonyho@8123–modethreads-connected

 OK–3clientconnectionthreads|threads_connected=3;10;20

 threads_connected=3;10;20

3表示连接数

10 表示warning阀值(默认)

20 表示critical阀值(默认)

Nagios相关配置

1》配置commands.cfg文件

definecommand{

command_namecheck_mysql_health

command_line$USER1$/check_mysql_health–hostname$ARG1$–username$ARG2$–password$ARG3$–warning$ARG4$–critical$ARG5$–mode$ARG6$

}

2》配置121_207_231_17.cfg文件

defineservice{

uselocal-service

host_name121.207.231.17

service_descriptionthreads-connected

check_commandcheck_mysql_health!10.59.97.57!honyho!honyho@8123!1000!1500!threads-connected

}