Cacti与nagios结合所需插件的安装与报错处理

Cacti和Nagios安装这里就不做介绍了

我们这里介绍的是nagios与cacti的整合，首先需要安装php json模块和ndoutils，其中Ndoutils是nagios的一个插件，就是可以用来把nagios的获取的数据存入到mysql数据库中。也可以实现与cacti的插件npc的集成，这个工具的安装是个关键。还需要安装使用npc插件。下面我们来一一介绍安装的方法。

一、安装Php-json tar xzf json-1.2.1 ;cd json-1.2.1 ;/usr/bin/phpize ;./configure ;make ;make install 安装完后，然后执行如下语句添加json模块：echo "extension=json.so" >/etc/php.d/json.ini

使用php -m|grep json应该可以显示json这个字符




如果没显示这个字符，证明模块没有安装正确
解决方法：yum remove php-common,然后重新安装php-common

二、安装Ndoutils

Ndoutils安装
1.DBI的安装到官网http://www.cpan.org/modules/by-module/DBI/ 下载这里下载的是DBI-1.633.tar.gztar -zxvf DBI-1.633.tar.gzcd DBI-1.633perl Makefile.PLmakemake test这里出现test错误，不用管他，继续安装。make install2. DBD的安装DBD-mysql-4.025tar -zxvf DBD-mysql-4.025.tar.gzcd DBD-mysql-4.025perl Makefile.PL --libs="-L/usr/lib64/mysql #mysql 使用yum装的，检查配置时系统一般能找到头文件和库文件的位置，不用过多配置一些选项makemake testmake install3.NDOUTILS安装编译安装NDOUtilstar -zxvf ndoutils-2.0.0cd ndoutils-2.0.0./configure --prefix=/usr/local/nagios --enable-mysqlmake4.拷贝文件
我的Nagios是3.5.1，所以拷贝的是ndomod-3x.o、ndo2db-3x，如果你的是2.X.x请拷贝ndomod-2x.o、ndo2db-2xcd ndoutils-2.0.0cd srccp ndo2db-3x ndomod-3x.o file2sock log2ndo /usr/local/nagios/bincd /usr/local/nagios/binmv ndo2db-3x ndo2dbcd configcp ndo2db.cfg-sample ndomod.cfg-sample /usr/local/nagios/etc/cd /usr/local/nagios/etcmv ndo2db.cfg-sample ndo2db.cfgmv ndomod.cfg-sample ndomod.cfg5.编辑ndo2db.cfg配置文件vim /usr/local/nagios/etc/ndo2db.cfglock_file=/usr/local/nagios/var/ndo2db.lockndo2db_user=nagiosndo2db_group=nagiossocket_type=tcpsocket_name=/usr/local/nagios/var/ndo.socktcp_port=5668use_ssl=0db_servertype=mysqldb_host=localhostdb_port=3306db_name=cacti#数据库名称db_prefix=npc_db_user=cactiuser#数据库使用者db_pass=huaxia#数据库密码max_timedevents_age=1440max_systemcommands_age=10080max_servicechecks_age=10080max_hostchecks_age=10080max_eventhandlers_age=44640max_externalcommands_age=44640debug_level=0debug_verbosity=1debug_file=/usr/local/nagios/var/ndo2db.debugmax_debug_file_size=10000006.配置ndomod.cfg文件vim /usr/local/nagios/etc/ndomod.cfginstance_name=defaultoutput_type=tcpsocketoutput=127.0.0.1tcp_port=5668use_ssl=0output_buffer_items=5000buffer_file=/usr/local/nagios/var/ndomod.tmpfile_rotation_interval=14400file_rotation_timeout=60reconnect_interval=15reconnect_warning_interval=15data_processing_options=-1config_output_options=2 8.配置nagios.cfg文件vi /usr/local/nagios/etc/nagios.cfg# 修改下面参数的值为-1（一般默认如此）。event_broker_options=-1# 复制下面内容粘贴到#broker_module＝...下面。# 注意broker_module= 和config_file是在一行上# Uncomment the line below if you're running Nagios 3.xbroker_module=/usr/local/nagios/bin/ndomod-3x.o config_file=/usr/local/nagios/etc/ndomod.cfgprocess_performance_data=1#注意该参数修改成启动状态9.配置启动脚本cd /usr/local/src/ndoutils-1.5.2cp daemon-init /etc/init.d/ndo2dbchmod +x ndo2db10、启动ndo2db服务
Service ndo2db start
11.重启nagiosservice nagios restart12.查看启动日志信息[root@BestTone-zabbix var]# tail -f nagios.log[1468292167] Successfully shutdown... (PID=29500)[1468292167] ndomod: Shutdown complete.[1468292167] Event broker module '/usr/local/nagios/bin/ndomod-3x.o' deinitialized successfully.[1468292167] Nagios 3.5.1 starting... (PID=14197)[1468292167] Local time is Tue Jul 12 10:56:07 CST 2016[1468292167] LOG VERSION: 2.0[1468292167] ndomod: NDOMOD 1.5.2 (06-08-2012) Copyright (c) 2009 Nagios Core Development Team and Community Contributors[1468292167] ndomod: Could not open data sink! I'll keep trying, but some output may get lost...[1468292167] Event broker module '/usr/local/nagios/bin/ndomod-3x.o' initialized successfully.[1468292167] Finished daemonizing... (New PID=14198)[1468293079] ndomod: Still unable to connect to data sink. 721 items lost, 5000 queued items to flush. 查看到报错信息ndomod: Could not open data sink! I'll keep trying, but some output may get lost...[1468293079] ndomod: Still unable to connect to data sink. 721 items lost, 5000 queued items to flush.从报错的信息可以看到ndomod没有把数据存到cacti数据库里，错误解决方法：vim /usr/local/nagios/etc/ndo2db.cfgndo2db_group=apache#修改数据库的属组为apachecd /usr/local/nagios/binchown nagios:apache ndo*#把两个主程序的属组改为apache cd ../etcchown nagios:apache ndo*#把两个配置文件的属组改为apache13、重启相关服务 service ndo2db restartservice nagios restart14、再次查看启动日志，发现启动成功，ndomod已经连接上cacti数据库[root@localhost ~]# tail -f /var/log/messages
Mar 24 09:31:25 localhost nagios: ndomod registered for retention data'
Mar 24 09:31:25 localhost nagios: ndomod registered for contact data'
Mar 24 09:31:25 localhost nagios: ndomod registered for contact notification data'
Mar 24 09:31:25 localhost nagios: ndomod registered for acknowledgement data'
Mar 24 09:31:25 localhost nagios: ndomod registered for contact status data'
Mar 24 09:31:25 localhost nagios: ndomod registered for adaptive contact data'
Mar 24 09:31:25 localhost nagios: Event broker module '/usr/local/nagios/bin/ndomod-3x.o' initialized successfully.
Mar 24 09:31:25 localhost nagios: Finished daemonizing... (New PID=1828)
Mar 24 10:31:25 localhost nagios: Auto-save of retention data completed successfully.
Mar 24 10:47:35 localhost kernel: hrtimer: interrupt took 3738538 ns三、安装npc软件

tar -vxzf npc-2.0.4.tar.gz ;

mv npc /var/www/html/cacti/plugins/

1、通过界面启动npc




2、在Cacti的"console"的"Settings"里设置好nagios命令文件的主路径和nagios的URL的路径，注意勾上"Romote Commands"项，点击"Save"按钮





3、再cacti数据库里，执行下面的sql语句
mysql里面执行如下sql即可：mysql> use cacti;alter table npc_eventhandlers add long_output TEXT NOT NULL default '' after output;alter table npc_hostchecks add long_output TEXT NOT NULL default '' after output; alter table npc_hoststatus add long_output TEXT NOT NULL default '' after output; alter table npc_notifications add long_output TEXT NOT NULL default '' after output; alter table npc_servicechecks add long_output TEXT NOT NULL default '' after output; alter table npc_servicestatus add long_output TEXT NOT NULL default '' after output; alter table npc_statehistory add long_output TEXT NOT NULL default '' after output; alter table npc_systemcommands add long_output TEXT NOT NULL default '' after output; 4、执行成功后，重启nagios和ndo2db,下面界面是nagios与cacti的整合效果图：

遇到的问题1)、假如这里的Nagios的状态是off我也曾遇到，主要是检查ndo2db连cacti库是否正常，可以查看/var/log/messages里的日志信息,看不到信息可能是你的ndomod.cfg和ndo2db.cfg配置有错误！建议检查配置文件。同时在cacti数据库里执行上面提示的几条sql语句。 2）、假如nagios状态栏无信息在cacti的数据库中找到表npc_programstatus，从表中选取programstatus_id、instance_id、status_update_time、last_command_check、last_log_rotation等几个字段并删除前面的一条记录，刷新一会，应该就可以出图。如下图所示：