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Monitoring Naviserver

Munin is a popular web-based tool to monitor several website. Munin provides a simple plugin mechanism for adding new kinds of sources, such as e.g. the NaviServer plugins for monitoring NaviServer.

The monitoring information collected by munin can be placed at different web servers, one finds usually information about apache and friends. In general older versions of munin (before 2.0) supported only static pages, whereas newer version support as well dynamic information (with additional features such as zooming).

For static munin pages, it is the easiest to place in OpenACS sites the output directory either under the main www directory, or under the subsite admin directory (packages/acs-subsite/www/admin/).

For the cgi-setup, one has to make sure to load nscgi in the statup files of NaviServer and to point the urls to the appropriate directories. The sample setup below uses the directories of munin as provided by a standard munin setup on an Ubuntu system.

ns_section ns/server/${server}/modules
   ns_param   nscgi        nscgi.so

ns_section "ns/server/${server}/module/nscgi"
   ns_param map  "GET /munin-cgi/munin-cgi-graph /var/www/cgi-bin/munin-cgi-graph"
   ns_param map  "GET /munin-cgi/static /etc/munin/static/"
   ns_param map  "GET /munin-cgi /var/www/cgi-bin/munin-cgi-html"

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