http://www.netvouz.com/henrik/tag/datasources?feed=rss henrik's bookmarks tagged "datasources" on Netvouz http://jon.netdork.net/2011/03/16/adding-a-new-datasource-to-an-rrd-database/ After upgrading several servers with a newer instance of nsclient++, we discovered Memory graphs were broken because of new performance metrics included in the check memory results. Well broken is subjective, the new performance data included the percentage free (as before), with the addition of the actual physical value (ie 1GB). This addition was missing from the RRDs when they were originally created, so when pnp4Nagios was updating the XML file it uses, it said it had 2 data sets, but the RRD only had one. Here’s how I fixed the issue. Computers > Linux henrik Sun, 19 Feb 2012 22:46:38 GMT http://www.cacti.net/ Frontend to RRDTool, sets up datasources, gathers data and displays graphs Computers > Linux henrik Sun, 12 Oct 2003 19:39:43 GMT