nagios工作正常，各个监控页面也可以正常显示，唯独maps无法显示，提示The requested URL /nagios/cgi-bin/statusmap.cgi was not found on this server。进到/nagios/cgi-bin/文件夹中发现果然没有statusmap.cgi。

上网查了一下，说是可能缺下面的安装包，

gd

gd-devel

libpng

libpng-devel

libjpeg

libjpeg-devel

zlib

zlib-devel

虽然不知道这些安装包到底有什么用，还是查查看到底哪个没装。

用rpm -qa | grep 命令挨个安装包查一遍，原来gd-devel没装

用yum install -y gd-devel命令安装，装好后回到nagios解压的目录执行以下命令：

#make devclean

# ./configure --with-gd-lib=/usr/lib --with-gd-inc=/usr/include

#./configure --with-command-group=nagcmd

#make all; make install; makeinstall-init; make install-config; make install-commandmode; makeinstall-webconf

完事之后重启nagios服务，ok，maps可以正常显示了！

不过突然发现监控主机少了一台，只剩下localhost了，另外一台远程主机看不到了！

是不是重新编译nagios把旧的配置文件覆盖了呢？查看nagios.cfg配置文件，

#vi /usr/local/nagios/etc/nagios.cfg

果然远程监控主机的信息没有了，添加

cfg_file=/usr/local/nagios/etc/objects/mylinux.cfg

重启nagios服务之后居然报错了，类似于这种错误

Error: Service check command 'check_nrpe!check_load' specified in service 'CPU Load' for host 'lucas_nj' not defined anywhere!

Error: Service check command 'check_nrpe!check_users' specified in service 'Current Users' for host 'lucas_nj' not defined anywhere!

Error: Service check command 'check_nrpe!check_total_procs' specified in service 'Total Processes' for host 'lucas_nj' not defined anywhere!

Error: Service check command 'check_nrpe!check_zombie_procs' specified in service 'Zombie Processes' for host 'lucas_nj' not defined anywhere!

意思说服务没定义， 难不成commands.cfg也被覆盖了？查看commands.cfg文件

#vi /usr/local/nagios/etc/objects/commands.cfg

乖乖，果然也覆盖掉了，在commands.cfg文件重新添加

define command {

command_name check_nrpe

command_line $USER1$/check_nrpe-H $HOSTADDRESS$ -c $ARG1$

}

重启nagios服务，工作正常。