nagios监控

一、nagios core
1、下载nagios-3.5.0.tar.gz  nagios-plugins-1.4.16.tar.gz
2、

yum install -y wget httpd php gcc glibc glibc-common gd gd-devel make net-snmp

3、

useradd nagios
groupadd nagcmd
usermod -a -G nagcmd nagios
cd nagios
./configure --with-command-group=nagcmd
make all
make install
make install-init
make install-config
make install-commandmode
make install-webconf
cp -R contrib/eventhandlers/ /usr/local/nagios/libexec/
chown -R nagios:nagios /usr/local/nagios/libexec/eventhandlers
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
htpasswd -c /usr/local/nagios/etc/htpasswd.user nagios
cd nagios-plugins
./configure --with-nagios-user=nagios --with-nagios-group=nagios
make
make install

4、

vi /usr/local/nagios/etccgi.cfg
use_authentication=0

5、

cd /usr/local/nagios/etc/objects
根据需要更改localhost.cfg文件中的各项定义

6、

service httpd start
service nagios start
访问

7、注：nagios默认用nagios账号，若用其它账号，需全新编译安装，详见./configure --help

二、nagios graph
1、

yum install php-devel php-common php-cli php-gd perl perl-URI perl-String

2、

下载 rrdtool-1.0.50.tar.gz pnp-0.4.14.tar.gz cgilib-0.5.tar.gz

3、

cd cgilib-0.5
make
cp libcgi.a /usr/lib64
cp cgi.h /usr/include
cd rrdtool
./configure --prefix=/usr/local/rrdtool
make
make install
cd pnp
./configure --with-rrdtool=/usr/local/rrdtool/bin/rrdtool
注：若使用其它账号和组，需在这里用--with-nagios-user/group指定
make all
make install
make install-config
make install-init
测试：
/pnp/index.php?host=localhost
最后一行出现 Directory /usr/local/nagios/share/perfdata/localhost not found 则正常

4、

vi /usr/local/nagios/etc/nagios.cfg
### 0 改为 1
process_performance_data=1
###去掉“#”
host_perfdata_command=process-host-perfdata
service_perfdata_command=process-service-perfdata

5、

vi /usr/local/nagios/etc/objects/commands.cfg
修改process-host-perfdata和 process-service-perfdata命令行：
define command{
command_name process-host-perfdata
command_line $USER1$/process_perfdata.pl
}
define command{
command_name process-service-perfdata
command_line $USER1$/process_perfdata.pl
}

6、

vi /usr/local/nagios/etc/objects/localhost.cfg
修改主机定义
define host{
use linux-server
host_name localhost
alias localhost
address 127.0.0.1
#一下两行为添加：
process_perf_data 1
action_url /nagios/pnp/index.php?host=$HOSTNAME$
}

7、

service nagios restart

8、自定义图表的时间范围
默认情况下PNP有5个时间范围：

4 Hours
24 Hours
One Week
One Month
One Year
vi /usr/local/nagios/etc/pnp/config.php
###
$views[0]["title"] = "4 Hours";
$views[0]["start"] = ( 60*60*4 );
$views[1]["title"] = "24 Hours";
$views[1]["start"] = ( 60*60*24 );
###更改为
$views[0]["title"] = "30 Minutes";
$views[0]["start"] = ( 60*60*1/2 );
$views[1]["title"] = "1 Hour";
$views[1]["start"] = ( 60*60*1 );
$views[2]["title"] = "2 Hours";
$views[2]["start"] = ( 60*60*2 );
以上更改可以生成半小时，1小时，2小时的图表

三、mysql监控
1、安装percona的yum库

rpm -Uhv

2、安装插件

yum install percona-nagios-plugins
默认安装到
/usr/lib64/nagios/plugins路径下
chown -R nagios:nagios  /usr/lib64/nagios

3、

vi /usr/local/nagios/etc/resource.cfg
添加
$USER2$=/usr/lib64/nagios/plugins

4、

vi /usr/local/nagios/etc/commands.cfg
添加
# define command for mysql
define command{
command_name    mysql_process
command_line    /usr/lib64/nagios/plugins/pmp-check-mysql-processlist -H 127.0.0.1 -l root -p admin
}
define command{
command_name    mysql_innodb
command_line    /usr/lib64/nagios/plugins/pmp-check-mysql-innodb -H 127.0.0.1 -l root -p admin
}
define command{
command_name    mysql_deleted
command_line    /usr/lib64/nagios/plugins/pmp-check-mysql-deleted-files -H 127.0.0.1 -l root -p admin
}

5、

vi /usr/local/nagios/etc/localhost.cfg
添加
define service {
use                            local-service
host_name                 localhost
service_description     Mysql Processlist
check_command        mysql_process!16!32
}
define service {
use                            local-service
host_name                 localhost
service_description     Mysql Innodb
check_command        mysql_innodb!3!10
}
define service {
use                            local-service
host_name                 localhost
service_description     Mysql Deleted
check_command        mysql_deleted!1!3
}
service nagios reload

6、注：
以上只添加了3个针对mysql的监控，可根据实际需要继续添加。
某些mysql监控脚本中的命令需要root权限，根据监控提示可对脚本作出一定更改