使用NDOUtils将Nagios监控信息存入数据库

1、NDOUtils安装需求：

Nagios正确安装运行，版本>=2.0安装目录：/usr/local/nagios

MySQL正确安装并运行，我用的是二进制安装包，安装目录：/usr/local/mysql-5.1.36

图4-1

2、安装

下载地址：http://www.nagios.org/download/

进入addons查找DBI和DBD下载地址

如果嫌麻烦可直接进入DBI官网http://dbi.perl.org/下载

确认DBD-mysql包安装，如没有安装，请先安装。

2.1、安装DBD-mysql前需要先安装DBI包

DBI最新下载地址：http://search.cpan.org/~timb/DBI/

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cd /usr/local/src/tarbag/

wget http://search.cpan.org/CPAN/authors/id/T/TI/TIMB/DBI-1.618.tar.gz

tar zxvf DBI-1.618.tar.gz -C ../software/

cd ../software/DBI-1.618/

perl Makefile.PL

make

make install

[/codesyntax]

2.2、安装DBD-mysql包

DBD最新下载地址：http://search.cpan.org/dist/DBD-mysql/

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cd /usr/local/src/tarbag/

wget http://search.cpan.org/CPAN/authors/id/C/CA/CAPTTOFU/DBD-mysql-4.020.tar.gz

tar zxvf DBD-mysql-4.020.tar.gz -C ../software/

cd ../software/DBD-mysql-4.020/

unset LANG

perl Makefile.PL --libs="-L/usr/local/mysql-5.1.36/lib/mysql -lmysqlclient -L/usr/lib -lz " --cflags="-I/usr/local/mysql-5.1.36/include/mysql" --testhost=127.0.0.1 --mysql_config=/usr/local/mysql-5.1.36/bin/mysql_config --testuser=root --testpassword=123456

make

make install

[/codesyntax]

排错

安装DBD-mysql的时候可能会出现无法make的错误，并提示make: *** [dbdimp.o] Error 1

解决方法：一般碰到这种情况都是编译的时候链接库问题导致的，所以需要将以上几个mysql的路径确切的对应上，象我出现如上问题就是由于--cflags参数未指定到真正包含链接库文件的目录导致无法正常make

原参数：--cflags="-I/usr/local/mysql-5.1.36/include/"

现参数：--cflags="-I/usr/local/mysql-5.1.36/include/mysql"

只要对原理清楚了，这些问题都是细心的问题，本人的一些小经验，希望能帮助到大家。

做好MySQL库文件lib和include文件的软链接，对接下来的ndo安装很有用。

[codesyntax lang="text"]

ln -s /usr/local/mysql-5.1.36/include/mysql/* /usr/include/

mkdir /usr/include/mysql

ln -s /usr/local/mysql-5.1.36/include/mysql/* /usr/include/mysql/

ln -s /usr/local/mysql-5.1.36/lib/* /usr/lib/

mkdir /usr/lib/mysql

ln -s /usr/local/mysql-5.1.36/lib/* /usr/lib/mysql

[/codesyntax]

2.3、安装ndoutils

ndoutils下载链接：http://exchange.nagios.org/directory/Addons/Database-Backends/NDOUtils/details

[codesyntax lang="text"]

cd /usr/local/src/tarbag/

wget http://downloads.sourceforge.net/project/nagios/ndoutils-1.x/ndoutils-1.5/ndoutils-1-5.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fnagios%2Ffiles%2Fndoutils-1.x%2Fndoutils-1.5%2F&ts=1331697712&use_mirror=nchc

tar zxvf ndoutils-1-5.tar.gz -C ../software/

cd ../software/ndoutils-1-5/

./configure --enable-mysql

#　执行完成后，注意向上看看打印出的信息，看看是否找到了MySQL的库文件和include文件。

make

make install

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#　我的Nagios是Nagios Core 3.3.1，安装完提示如下，所以如果是Nagios 2.x，执行make install-2x即可

[codesyntax lang="text"]

Hint: NDOUtils Installation against Nagios v3.x

completed.

If you want to install NDOUtils for Nagios v2.x

please type 'make install-2x

Next step should be the database initialization/upgrade

cd into the db/ directory and either:

./installdb (for a new installation) or:

./upgradedb (for an existing one)

make[1]: Leaving directory `/usr/local/src/software/ndoutils-1-5/src'

Main NDOUtils components installed

[/codesyntax]

拷贝相关类库到/usr/local/nagios/bin下

[codesyntax lang="text"]

cd src/

cp ndomod-3x.o ndo2db-3x /usr/local/nagios/bin/

[/codesyntax]

[codesyntax lang="text"]

cd ../db

#　创建数据库，使用root用户，密码是123456

mysqladmin -uroot -p123456 create nagios

chmod +x installdb

./installdb -uroot -p123456 -d nagios

[/codesyntax]

排错

在初始化数据库的时候会出现如下报错

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install_driver(mysql) failed: Can't load '/usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi/auto/DBD/mysql/mysql.so' for module DBD::mysql: libmysqlclient.so.16: cannot open shared object file: No such file or directory at /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/DynaLoader.pm line 230.

at (eval 5) line 3

Compilation failed in require at (eval 5) line 3.

Perhaps a required shared library or dll isn't installed where expected

at ./installdb line 41

[/codesyntax]

根据错误提示，发现可能是动态库libmysqlclient.so.16的问题，google了一下，在斩月朋友的文章中找到了解决方法http://hi.baidu.com/naruto6006/blog/item/e5ad30254bec1938c8955912.html

[codesyntax lang="text"]

ln -s /usr/local/mysql-5.1.36/lib/mysql/libmysqlclient.so.16 /usr/lib

ln -s /usr/local/mysql-5.1.36/lib/mysql/libmysqlclient.so.16 /usr/lib64

[/codesyntax]

出现如下提示

[codesyntax lang="text"]

DBD::mysql::db do failed: Table 'nagios.nagios_dbversion' doesn't exist at ./installdb line 51.

** Creating tables for version 1.4b7

Using mysql.sql for installation...

** Updating table nagios_dbversion

Done!

DBD::mysql::db do failed: Table 'nagios.nagios_dbversion' doesn't exist at ./installdb line 51(这个错误可以忽略…)

[/codesyntax]

2.4、相关配置

#　拷贝配置文件

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cd ../config

cp ndo* /usr/local/nagios/etc/

cd /usr/local/nagios/etc/

cp ndo2db.cfg-sample ndo2db.cfg

cp ndomod.cfg-sample ndomod.cfg

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#　修改/usr/local/nagios/etc/ndo2db.cfg文件的数据库信息。

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cd /usr/local/nagios/etc/

vi /usr/local/nagios/etc/ndo2db.cfg

#　主要改以下四条

db_host=localhost

db_name=nagios

db_user=nagios

db_pass=nagios

[/codesyntax]

排错

如果启动时碰到如下报错一般是由于数据库权限问题导致的

[codesyntax lang="text"]

[1331707820] ndomod: Still unable to reconnect to data sink. 0 items lost, 1367 queued items to flush.

[/codesyntax]

[codesyntax lang="text"]

vi nagios.cfg

#　复制下面内容粘贴到/usr/local/nagios/etc/nagios.cfg配置文件的#broker_module＝...下面。

# Uncomment the line below if you're running Nagios 3.x

broker_module=/usr/local/nagios/bin/ndomod-3x.o config_file=/usr/local/nagios/etc/ndomod.cfg

#　修改/usr/local/nagios/etc/nagios.cfg配置文件下面参数的值为-1(一般默认如此)。

event_broker_options=-1

[/codesyntax]

[codesyntax lang="text"]

rm -rf ndo2db.cfg-sample* ndomod.cfg-sample*

chown -R nagios\: /usr/local/nagios

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# 启动ndo2db

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/usr/local/nagios/bin/ndo2db-3x -c /usr/local/nagios/etc/ndo2db.cfg

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将启动命令加入到/etc/rc.local中去

# 查看系统日志是否有错误信息：

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tail -30 /var/log/messages

Nov 27 14:09:26 tech nagios: ndomod: NDOMOD 1.4b7 (10-31-2007) Copyright (c) 2005-2007 Ethan Galstad (nagios@nagios.org)

Nov 27 14:09:26 tech nagios: ndomod: Successfully connected to data sink. 0 queued items to flush.

Nov 27 14:09:26 tech nagios: Event broker module '/usr/local/nagios/bin/ndomod-3x.o' initialized successfully.

Nov 27 14:09:26 tech nagios: Finished daemonizing... (New PID=18848)

[/codesyntax]

# 重启Nagios

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service nagios restart

[/codesyntax]

# 查看Nagios日志，看是否正常启动。

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tail -20 /usr/local/nagios/var/nagios.log

[1227766166] ndomod: NDOMOD 1.4b7 (10-31-2007) Copyright (c) 2005-2007 Ethan Galstad (nagios@nagios.org)

[1227766166] ndomod: Successfully connected to data sink. 0 queued items to flush.

[1227766166] Event broker module '/usr/local/nagios/bin/ndomod-3x.o' initialized successfully.

[1227766166] Finished daemonizing... (New PID=18848)

[/codesyntax]

3、如何用NDOUtils将多个Nagios实例的性能数据写入一个数据库？

图2

配置方法类似于上面的单实例单数据库模式，只是在装第二个实例时省去安装DB一步，并需要修改/usr/local/nagios/etc/ndomod.cfg中的实例名。

实例名默认为instance_name=default，如果有多个实例必需修改成不同的实例名。

如：instance_name=nagios1

注意修改/usr/local/nagios/etc/ndo2db.cfg中数据库连接的相关配置。