nagios配置
1：配置web接口
假设你已经运行了apache，如无，请参考：
http://localhost/upload/blog.php?do-showone-tid-18.html
vi/usr/local/apache2/conf/httpd.conf
添加以下内容：
ScriptAlias/nagios/cgi-bin/usr/local/nagios/sbin <Directory"/usr/local/nagios/sbin"> OptionsExecCGI AllowOverrideNone Orderallow,deny Allowfromall AuthName"NagiosAccess" AuthTypeBasic AuthUserFile/usr/local/nagios/etc/htpasswd.users Requirevalid-user </Directory> Alias/nagios/usr/local/nagios/share <Directory"/usr/local/nagios/share"> OptionsNone AllowOverrideNone Orderallow,deny Allowfromall AuthName"NagiosAccess" AuthTypeBasic AuthUserFile/usr/local/nagios/etc/htpasswd.users Requirevalid-user </Directory>修改后，保存文件并重启apache：
/usr/local/apahce2/bin/apachectlrestart
2：配置apache的BASIC认证：
生成认证密码：
/usr/local/apache2/bin/htpasswd–c/usr/local/nagios/etc/htpasswd.usersnagiosnagios
apache完成接口配置。
开始配置nagios：
cd/usr/local/nagios/etc/
在/usr/local/nagios/etc下是nagios模板文件的配置-sample,把.cfg-sample所有文件都复制成.cfg
例如:cpnagios.cfg-samplenagios.cfg
完成所有副本.
viminimal.cfg
注释所有command：
注释的方法是在每个定义句子前添加注释”#“
修改cgi.cfg
修改use_authentication=1为use_authentication=0,即不用验证.否则，有些页面不会显示。
检查配置文件是否有语法错误：
/usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfg
若正确，将显示以下结果：
TotalWarnings:0
TotalErrors:0
否则，配置文件需要根据提示进行修改。配置文件等待。现在开始nagios
/usr/local/nagios/bin/nagios-d/usr/local/nagios/etc/nagios.cfg
为了使nagios我们使用异常中断daemontools启动：
安装daemontool：
mkdir-p/package chmod1755/package cd/package fetchhttp://cr.yp.to/daemontools/daemontools-0.76.tar.gz cdadmin/daemontools-0.76/ package/install检查svscan进程是否启动：
psaux|grepsvscan root3760.00.016360con-IW-0:00.00/bin/sh/command/svscanboot root4110.00.01224208con-S8Jul060:42.50svscan/serviceok，正常启动。
cd/service mkdirnagios chmod1755nagios touch./run chmod755./run virun PATH=/usr/local/bin:/usr/bin:/bin exportPATH execenv-PATH=$PATH\ /usr/local/nagios/bin/nagios/usr/local/nagios/etc/nagios.cfg mkdirlog cdlog touch./run chmod755./run vi./run #!/bin/sh execsetuidgidlogadminmultilogts1000000n100./main mkdirmain chmod777main chownnagios.nagiosmain touchstatus chownnagios.nagiosstatus svc-u/service/nagios/ svstat/service/nagios/ root@##psauxww|grepnagios root232760.00.11176488??I5:00PM0:01.71supervisenagios nagios342510.00.323161552??S6:06PM0:00.10/usr/local/nagios/bin/nagios/usr/local/nagios/etc/nagios.cfg root@##ok，现在把nagios服务自动启动。svc命令可以启动或停止服务。
--------------------------------------------------------------------------------- svcoptsservices optsisaseriesofgetopt-styleoptions.servicesconsistsofanynumberofarguments,eachargumentnamingadirectoryusedbysupervise. -u:Up.Iftheserviceisnotrunning,startit.Iftheservicestops,restartit. -d:Down.Iftheserviceisrunning,senditaTERMsignalandthenaCONTsignal.Afteritstops,donotrestartit. -o:Once.Iftheserviceisnotrunning,startit.Donotrestartitifitstops. -p:Pause.SendtheserviceaSTOPsignal. -c:Continue.SendtheserviceaCONTsignal. -h:Hangup.SendtheserviceaHUPsignal. -a:Alarm.SendtheserviceanALRMsignal. -i:Interrupt.SendtheserviceanINTsignal. -t:Terminate.SendtheserviceaTERMsignal. -k:Kill.SendtheserviceaKILLsignal. -x:Exit.supervisewillexitassoonastheserviceisdown.Ifyouusethisoptiononastablesystem,you'redoingsomethingwrong;superviseisdesignedtorunforever. ---------------------------------------------------------------------------------比如：
停止nagios－－svc-d/service/nagios/
重启nagios－－svc-t/service/nagios/
启动nagios－－svc-u/service/nagios/
当然也可以用inited方式：
/usr/local/etc/rc.d/nagiosstart/stop
好了，反正daemontools非常强大，现在打开网页：http://localhost/nagios/，会让你大吃一惊，呵呵，我的服务器和服务状态都清楚的看到了。现在我们的nagios只有一个，那就是它自己，localhost，哈哈，我们会添加其他主机和主机服务。
#p#
nagios庐山真面目
1）为主机添加一个服务
为localhost主机添加qmail监控服务的方法如下：
viminimal.cfg defineservice{ usegeneric-service;Nameofservicetemplatetouse host_namelocalhost service_descriptionqmail_smtp is_volatile0 check_period24x7 max_check_attempts1 normal_check_interval1 retry_check_interval1 contact_groupsadmins notification_optionsw,u,c,r notification_interval960 notification_period24x7 check_commandcheck_smtp!2010%！}可以直接复制原件进行修改，我这是复制原件check_local_disk进行host_name，service_description，check_command等
defineservice{ usegeneric-service;Nameofservicetemplatetouse host_namelocalhost service_descriptionqmail_pop3 is_volatile0 check_period24x7 max_check_attempts1 normal_check_interval1 retry_check_interval1 contact_groupsadmins notification_optionsw,u,c,r notification_interval960 notification_period24x7 check_commandcheck_pop!2010%！}修改猫画虎，然后修改：
vicheckcommands.cfg #'check_qmail'commanddefinition definecommand{ command_namecheck_qmail command_line$USER1$/check_smtp-H127.0.0.1 } definecommand{ command_namecheck_pop3 command_line$USER1$/check_pop-H127.0.0.1 }然后检查配置文件：
/usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfg
假如没有错误会显示：
TotalWarnings:0
TotalErrors:0
如有错误，请根据提示修正。
重启nagios
svc-d/service/nagios/&&svc-u/service/nagios/
通过web页面检查nagios的结果：
http://10.5.1.153/nagios/
点击“ServiceDetail”
#p#
2）添加主机和服务
我们将监控主机的负载、磁盘和其他未通过端口启动的服务器状态，如：apache、mysql、qmail和ntp等等。所以没有端口。nagios能直接监控吗？答案是否定的。因此，我们必须安装两台主机nrpe，nrpe可启动5666端口，不断向监控中心主机传输检测信息。
ok，我们把apache、mysql、qmail和ntp此外，这次我们将新建监控主机和服务的文件：
cd/usr/local/nagios/etc/ touch10_5_1_156.cfg vinagios.cfg cfg_file=/usr/local/nagios/etc/10_5_1_156.cfg vi10_5_1_156.cfg定义主机：
definehost{ usegeneric-host;Nameofhosttemplatetouse host_nametest_nrpe aliasclient address10.5.1.156 check_commandcheck-host-alive max_check_attempts1 check_period24x7 notification_interval120 notification_period24x7 notification_optionsd,r contact_groupsadmins }定义主机需要检查的服务：
defineservice{ usegeneric-service;Nameofservicetemplatetouse host_nametest_nrpe service_descriptionPING is_volatile0 check_period24x7 max_check_attempts1 normal_check_interval1 retry_check_interval1 contact_groupsadmins notification_optionsw,u,c,r notification_interval960 notification_period24x7 check_commandcheck_ping!100.0,20%!500.0,60% } defineservice{ usegeneric-service;Nameofservicetemplatetouse host_nametest_nrpe service_descriptionapache is_volatile0 check_period24x7 max_check_attempts1 normal_check_interval1 retry_check_interval1 contact_groupsadmins notification_optionsw,u,c,r notification_interval960 notification_period24x7 check_commandcheck_http!100.0,20%!500.0,60% } defineservice{ usegeneric-service;Nameofservicetemplatetouse host_nametest_nrpe service_descriptionmysql is_volatile0 check_period24x7 max_check_attempts1 normal_check_interval1 retry_check_interval1 contact_groupsadmins notification_optionsw,u,c,r notification_interval960 notification_period24x7 check_commandcheck_mysql!100.0,20%!500.0,60% } defineservice{ usegeneric-service;Nameofservicetemplatetouse host_nametest_nrpe service_descriptionntp is_volatile0 check_period24x7 max_check_attempts1 normal_check_interval1 retry_check_interval1 contact_groupsadmins notification_optionsw,u,c,r notification_interval960 notification_period24x7 check_commandcheck_ntp!100.0,20%!500.0,60% } defineservice{ usegeneric-service;Nameofservicetemplatetouse host_nametest_nrpe service_descriptionqmail_smtp is_volatile0 check_period24x7 max_check_attempts1 normal_check_interval1 retry_check_interval1 contact_groupsadmins notification_optionsw,u,c,r notification_interval960 notification_period24x7 check_commandcheck_smtp!100.0,20%!500.0,60% } defineservice{ usegeneric-service;Nameofservicetemplatetouse host_nametest_nrpe service_descriptionqmail_pop3 is_volatile0 check_period24x7 max_check_attempts1 normal_check_interval1 retry_check_interval1 contact_groupsadmins notification_optionsw,u,c,r notification_interval960 notification_period24x7 check_commandcheck_pop!100.0,20%!500.0,60% }nagios在配置中，服务被定义。此时是否有更多的主机及其以下服务？这是肯定的。如何解决在此过程中添加主机和服务的可能问题？请阅读：概念、安装和故障解决方案