nagios map功能

nagios自身有个map功能，十分强大，配置也也十分简单 。只需要简单的配置就可以理由网络架构。直接先上两个图先：

如上图所示，可以直接一目了然了解网企业的网络架构。在nagios里想要实现上图的效果非常简单，只需要两个配置参数即可。一个是parents，用于定义其上层节点；一个是statusmap_image,用于指定该节点使用的图片名称，其图片默认从/App/nagios/share/images/logos位置获取。具体配置如下：

1、先定义一个交换机或防火墙（也可以是其他设备）

define host{
        use                     linux-server
        host_name               huzhou
        alias                   huzhou
        statusmap_image         switch40.jpg
        address                 61.153.XXX.X
        notification_interval   0
        process_perf_data       1
        action_url              /pnp4nagios/graph?host=$HOSTNAME$
        }

2、在一个主机的配置里定义其父节点的名字，并配图

define host{
        use                     linux-server
        host_name               361way
        statusmap_image         linux40.jpg
        parents                 huzhou
        alias                   192.168.8.7
        address                 192.168.8.7
        notification_interval 60
        process_perf_data       1
        action_url              /pnp4nagios/graph?host=$HOSTNAME$
        }

另外，需要提醒的是，此处配置的图片最好是GD格式的，这一点在nagios的cgi.cfg 文件里有相关说明：

# STATUSMAP BACKGROUND IMAGE
# This option allows you to specify an image to be used as a
# background in the statusmap CGI.  It is assumed that the image
# resides in the HTML images path (i.e. /usr/local/nagios/share/images).
# This path is automatically determined by appending "/images"
# to the path specified by the 'physical_html_path' directive.
# Note:  The image file may be in GIF, PNG, JPEG, or GD2 format.
# However, I recommend that you convert your image to GD2 format
# (uncompressed), as this will cause less CPU load when the CGI
# generates the image.