Centreon+Nagios实战第四篇——监控端安装NDOUtils

首先我们需要安装MySql和Git，这可以通过yum来实现

yum -y install mysql mysql-server mysql-devel git

接下来启动MySql，对MySql进行配置 service mysqld start

检查MySql是处于运行中

ps x | grep mysql | grep -v grep

这条指令正常情况应该输出以下信息: 9584 pts/0 S 0:00 /bin/sh /usr/bin/mysqld_safe –datadir=/var/lib/mysql –socket=/var/lib/mysql/mysql.sock –pid-file=/var/run/mysqld/mysqld.pid –basedir=/usr –user=mysql

给Root用户添加一个密码，这里我就给root用户添加密码为’mypassword’

/usr/bin/mysqladmin -u root password 'mypassword'

将MySql启动添加到boot上

chkconfig --add mysqld
chkconfig mysqld on

接下来更新一些linux内核设置，让消息队列功能运作更加高效

echo "kernel.msgmnb = 131072000" >> /etc/sysctl.conf
echo "kernel.msgmax = 131072000" >> /etc/sysctl.conf
echo "kernel.shmmax = 4294967295" >> /etc/sysctl.conf
echo "kernel.shmall = 268435456" >> /etc/sysctl.conf    
sysctl -e -p /etc/sysctl.conf

执行完最后一条指令时会输出下面的信息: net.ipv4.ip_forward = 0 net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.default.accept_source_route = 0 kernel.sysrq = 0 kernel.core_uses_pid = 1 net.ipv4.tcp_syncookies = 1 kernel.msgmnb = 65536 kernel.msgmax = 65536 kernel.shmmax = 68719476736 kernel.shmall = 4294967296 kernel.msgmnb = 131072000 kernel.msgmax = 131072000 kernel.shmmax = 4294967295 kernel.shmall = 268435456

接下来我们创建数据库和数据库用户，在这整篇文档中，我会使用ndoutils作为用户名，ndoutils_password作为密码，数据库名为nagios

mysql -u root -p'mypassword'

CREATE DATABASE nagios DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

CREATE USER 'ndoutils'@'localhost' IDENTIFIED BY 'ndoutils_password';

GRANT USAGE ON *.* TO 'ndoutils'@'localhost' IDENTIFIED BY 'ndoutils_password' WITH MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 MAX_USER_CONNECTIONS 0 ;

GRANT ALL PRIVILEGES ON nagios.* TO 'ndoutils'@'localhost' WITH GRANT OPTION ;

q

运行下面这条指令来确认你的数据库是否被正确设置了

echo 'show databases;' | mysql -u ndoutils -p'ndoutils_password' -h localhost

上面这条指令正常情况下会输出下面的结果 Database information_schema nagios test

前面是一些预先步骤，接下来开始正式安装NDOUtils 首先下载安装包并解压

cd /tmp
wget  https://sourceforge.net/projects/nagios/files/ndoutils-2.x/ndoutils-2.0.0/ndoutils-2.0.0.tar.gz
tar zxf ndoutils-2.0.0.tar.gz

安装

cd /tmp/ndoutils-2.0.0
./configure
make
make install
make install-init

初始化数据库

cd /tmp/ndoutils-2.0.0/db

./installdb -u 'ndoutils' -p 'ndoutils_password' -h 'localhost' -d nagios

创建配置文件

cp /tmp/ndoutils-2.0.0/config/ndo2db.cfg-sample /usr/local/nagios/etc/ndo2db.cfg

sed -i 's/^db_user=.*/db_user=ndoutils/g' /usr/local/nagios/etc/ndo2db.cfg

sed -i 's/^db_pass=.*/db_pass=ndoutils_password/g' /usr/local/nagios/etc/ndo2db.cfg

chmod 664 /usr/local/nagios/etc/ndo2db.cfg

cp /tmp/ndoutils-2.0.0/config/ndomod.cfg-sample /usr/local/nagios/etc/ndomod.cfg

chmod 664 /usr/local/nagios/etc/ndomod.cfg

配置ndo2db服务然后启动服务

chkconfig --add ndo2db
chkconfig ndo2db on
service ndo2db start

更新nagios，配置nagios.cfg文件指明nagios使用的是NDOUtils模块

echo '' >> /usr/local/nagios/etc/nagios.cfg

echo ' #NDOUtils Broker Module' >> /usr/local/nagios/etc/nagios.cfg

echo 'broker_module=/usr/local/nagios/bin/ndomod.o config_file=/usr/local/nagios/etc/ndomod.cfg' >> /usr/local/nagios/etc/nagios.cfg

重启Nagios

service nagios restart
service nagios status

最后一条指令应该显示Nagios处于运行状态，输出消息如下： nagios (pid 13169) is running… 下面这条指令显示Nagios成功的加载了NDO模块

grep ndo /usr/local/nagios/var/nagios.log

执行之后应该显示以下信息

下面这条指令会向您展示数据库的一些信息

echo 'select * from nagios.nagios_logentries;' | mysql -u ndoutils -p'ndoutils_password'

展示的信息如下

执行完以上操作后您就完成了NDOUtilts的安装，并且配置好了Nagios使用NDO broker模块