nagios 监控slave（check_MySQL_health插件）
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http://labs.consol.de/wp-content/uploads/2011/08/check_mysql_health-2.1.7.tar.gz
# mount /dev/cdrom /media/cdrom
# rpm -ivh /media/cdrom/Server/perl-DBI-1.52-2.el5.i386.rpm
# rpm -ivh /media/cdrom/Server/perl-DBD-MsSQL-3.0007-2.el5.i386.rpm --nodeps
# tar zxf check_mysql_health-2.1.7.tar.gz
# cd check_mysql_health-2.1.7
# ./configure
# make && make install
# mysql -u root -p123456
> grant all on *.* to ming@'192.168.1.10' identified by '123456';
> quit
下面要借助于nrpe（nrpe安装步骤略）
# vi /usr/local/nagios/etc/nrpe.cfg
command[slave_io_running]=/usr/local/nagios/libexec/check_mysql_health --hostname 192.168.1.10 --port 3306 --username ming --password 123456 --mode slave-io-running --critical No
command[slave_io_running]=/usr/local/nagios/libexec/check_mysql_health --hostname 192.168.1.10 --port 3306 --username ming --password 123456 --mode slave-sql-running --critical No
:wq
重启nrpe：
# killall nrpe
# /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
# vi /usr/local/nagios/etc/objects/ming.cfg (ming.cfg为监控主机的文件，自建的)
define service{
use local-service ; Name of service template to use
host_name myhostname
service_description slave-io-running
check_command check_nrpe!slave_io_running
}
define service{
use local-service ; Name of service template to use
host_name myhostname
service_description slave-sql-running
check_command check_nrpe!slave_sql_running
}
:wq
重启nagios
# service nagios restart