nagios配置
1：配置web接口
假设你已经运行了apache，如果没有，请参考：
http://localhost/upload/blog.php?do-showone-tid-18.html
vi /usr/local/apache2/conf/httpd.conf
添加如下内容：
- ScriptAlias /nagios/cgi-bin /usr/local/nagios/sbin
- <Directory "/usr/local/nagios/sbin">
- Options ExecCGI
- AllowOverride None
- Order allow,deny
- Allow from all
- AuthName "Nagios Access"
- AuthType Basic
- AuthUserFile /usr/local/nagios/etc/htpasswd.users
- Require valid-user
- </Directory>
- Alias /nagios /usr/local/nagios/share
- <Directory "/usr/local/nagios/share">
- Options None
- AllowOverride None
- Order allow,deny
- Allow from all
- AuthName "Nagios Access"
- AuthType Basic
- AuthUserFile /usr/local/nagios/etc/htpasswd.users
- Require valid-user
- </Directory>
修改完毕，保存文件，并重启apache：
/usr/local/apahce2/bin/apachectl restart
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.users nagios nagios
apache接口配置完成。
开始配置nagios：
cd /usr/local/nagios/etc/
在/usr/local/nagios/etc下是nagios的配置模板文件-sample,把.cfg-sample文件全部拷贝成.cfg
例如:cp nagios.cfg-sample nagios.cfg
全部拷贝完成即可.
vi minimal.cfg
注释所有command：
注释的方法是在每一个定义语句前面添加”#“
修改cgi.cfg
修改use_authentication=1为use_authentication=0,即不用验证.不然有一些页面不会显示。
现在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
如果正确，会显示以下结果：
Total Warnings: 0
Total Errors: 0
否则，需要根据提示进行修改配置文件。配置文件等会再弄。现在启动nagios
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
为了使nagios异常中断，我们使用daemontools启动：
安装daemontool：
- mkdir -p /package
- chmod 1755 /package
- cd /package
- fetch http://cr.yp.to/daemontools/daemontools-0.76.tar.gz
- cd admin/daemontools-0.76/
- package/install
检查svscan进程是否启动：
- ps aux | grep svscan
- root 376 0.0 0.0 1636 0 con- IW - 0:00.00 /bin/sh /command/svscanboot
- root 411 0.0 0.0 1224 208 con- S 8Jul06 0:42.50 svscan /service
ok，启动正常了。
- cd /service
- mkdir nagios
- chmod 1755 nagios
- touch ./run
- chmod 755 ./run
- vi run
- PATH=/usr/local/bin:/usr/bin:/bin
- export PATH
- exec env - PATH=$PATH
- /usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg
- mkdir log
- cd log
- touch ./run
- chmod 755 ./run
- vi ./run
- #!/bin/sh
- exec setuidgid logadmin multilog t s1000000 n100 ./main
- mkdir main
- chmod 777 main
- chown nagios.nagios main
- touch status
- chown nagios.nagios status
- svc -u /service/nagios/
- svstat /service/nagios/
- root@## ps auxww | grep nagios
- root 23276 0.0 0.1 1176 488 ?? I 5:00PM 0:01.71 supervise nagios
- nagios 34251 0.0 0.3 2316 1552 ?? S 6:06PM 0:00.10 /usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg
- root@##
ok，现在把nagios服务做成自动启动的服务了。通过svc命令可以启动或者停止服务。
- ---------------------------------------------------------------------------------
- svc opts services
- opts is a series of getopt-style options. services consists of any number of arguments, each argument naming a directory used by supervise.
- -u: Up. If the service is not running, start it. If the service stops, restart it.
- -d: Down. If the service is running, send it a TERM signal and then a CONT signal. After it stops, do not restart it.
- -o: Once. If the service is not running, start it. Do not restart it if it stops.
- -p: Pause. Send the service a STOP signal.
- -c: Continue. Send the service a CONT signal.
- -h: Hangup. Send the service a HUP signal.
- -a: Alarm. Send the service an ALRM signal.
- -i: Interrupt. Send the service an INT signal.
- -t: Terminate. Send the service a TERM signal.
- -k: Kill. Send the service a KILL signal.
- -x: Exit. supervise will exit as soon as the service is down. If you use this option on a stable system, you're doing something wrong; supervise is designed to run forever.
- ---------------------------------------------------------------------------------
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，你也可以使用inited的方式进行：
/usr/local/etc/rc.d/nagios start/stop
好了，反正daemontools很强大，现在打开网页：http://localhost/nagios/，一定会让你大吃一惊，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中只有一个，那就是它自己，localhost，呵呵，等会我们添加别的主机和主机服务。
