4.使用NDOUtils将Nagios监控信息存入数据库

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/ [codesyntax lang="text"] 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/ [codesyntax lang="text"] 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 [/codesyntax] #　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 [codesyntax lang="text"] 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 [codesyntax lang="text"] 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 [/codesyntax] #　修改/usr/local/nagios/etc/ndo2db.cfg文件的数据库信息。 [codesyntax lang="text"] 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 [/codesyntax] # 启动ndo2db [codesyntax lang="text"] /usr/local/nagios/bin/ndo2db-3x -c /usr/local/nagios/etc/ndo2db.cfg [/codesyntax] 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： [codesyntax lang="text"] 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 ([email protected]) 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 [codesyntax lang="text"] service nagios restart [/codesyntax] # 查看Nagios日志，看是否正常启动。 [codesyntax lang="text"] tail -20 /usr/local/nagios/var/nagios.log [1227766166] ndomod: NDOMOD 1.4b7 (10-31-2007) Copyright (c) 2005-2007 Ethan Galstad ([email protected]) [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。