参考文献：
http://www.cnblogs.com/mchina/archive/2013/02/20/2883404.html
http://my.oschina.net/duangr/blog/183160
设定文件权限
chown -R nagios.nagios envision_*
chown -R nagios.nagios envision_*
1.创建用户并设定密码
# useradd -s /sbin/nologin nagios
修改nagios密码
sudo passwd nagios
密码设置为nagios
2.创建目录并设定权限
# mkdir /usr/local/nagios
ls -al --查看目录权限
# chown -R nagios.nagios /usr/local/nagios
ls -al --再次查看目录权限
mkdir /home/nagios
chown -R nagios.nagios /home/nagios
su nagios
测试mutt发送邮件，
echo "test" |mutt -s "my_first_test" [email protected]，会自动穿件/home/nagios/sent文件
./configure --prefix 作用
不指定prefix，则可执行文件默认放在/usr/local/bin，库文件默认放在/usr/local/lib，配置文件默认放在/usr/local/etc。其它的资源文件放在/usr/local/share。你要卸载这个程序，要么在原来的make目录下用一次make uninstall（前提是make文件指定过uninstall）,要么去上述目录里面把相关的文件一个个手工删掉。
指定prefix，直接删掉一个文件夹就够了。
3.下载安装
解压缩
tar -zxf nagios-4.0.4.tar.gz
进入根目录
cd nagios-4.0.4/
配置
[email protected]:~/software/nagios-4.0.4$ ./configure --prefix=/usr/local/nagios
配置
./configure --prefix=/usr/local/nagios
编译
make all
make install && make install-init && make install-commandmode && make install-config
4. 安装Nagios 插件
# wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.16.tar.gz
# tar zxvf nagios-plugins-1.4.16.tar.gz
# cd nagios-plugins-1.4.16
# ./configure --prefix=/usr/local/nagios
# make && make install
6.使用chkconfig管理服务
ubuntu中使用chkconfig可能有bug，解决方法参考：http://blog.db89.org/ubuntu-error-in-the-chkconfig-command-prompt-sbin-insserv-no-such-file-or-directory/
sudo ln -s /usr/lib/insserv/insserv /sbin/insserv
[email protected]:/sbin# ll /sbin/insserv
lrwxrwxrwx 1 root root 24 Mar 28 09:21 /sbin/insserv -> /usr/lib/insserv/insserv*
7.Nagios 启动的时候有下面的警告：
Starting nagios:No directory, logging in with HOME=/
done.
修改/etc/passwd
nagios:x:1001:1001::/home/nagios:/bin/sh 改为：
nagios:x:1001:1001::/usr/local/nagios:/bin/sh
Error: Could not open command file ‘/usr/local/nagios/var/rw/nagios.cmd‘ for update!
The permissions on the external command file and/or directory may be incorrect. Read the FAQs on how to setup proper permissions.
An error occurred while attempting to commit your command for processing.
问题
[email protected]:~$ sudo service apache2 restart
* Restarting web server apache2
apache2: Could not reliably determine the server‘s fully qualified domain name, using 127.0.1.1 for ServerName
... waiting apache2: Could not reliably determine the server‘s fully qualified domain name, using 127.0.1.1 for ServerName
...done.
解决方法
修改 httpd.conf 文件
打开终端，输入以下命令：
sudo vim /etc/apache2/httpd.conf
默认情况下，这个是一个空文件，在文件中加入以下内容：
ServerName localhost
保存文件退出，再次重启apache，错误提示没有了。
ubuntu下nagios配置