=encoding UTF-8 =head1 NAME collectd-nagios - Nagios plugin for querying collectd =head1 SYNOPSIS collectd-nagios B<-s> I B<-n> I B<-H> I I<[options]> =head1 DESCRIPTION This small program is the glue between collectd and nagios. collectd collects various performance statistics which it provides via the C, see L. This program is called by Nagios, connects to the UNIX socket and reads the values from collectd. It then returns B, B or B depending on the values and the ranges provided by Nagios. =head1 ARGUMENTS AND OPTIONS The following arguments and options are required and understood by collectd-nagios. The order of the arguments generally doesn't matter, as long as no argument is passed more than once. =over 4 =item B<-s> I Path of the UNIX socket opened by collectd's C. =item B<-n> I The value to read from collectd. The argument is in the form C. =item B<-H> I Hostname to query the values for. =item B<-d> I Each I may be made of multiple "data sources". With this option you can select one or more data sources. To select multiple data sources simply specify this option again. If multiple data sources are examined they are handled according to the consolidation function given with the B<-g> option. =item B<-g> BI<|>BI<|>B When multiple data sources are selected from a value spec, they can be handled differently depending on this option. The values of the following meaning: =over 4 =item B No consolidation if done and the warning and critical regions are applied to each value independently. =item B The warning and critical ranges are applied to the average of all values. =item B The warning and critical ranges are applied to the sum of all values. =item B The warning and critical ranges are applied to the ratio (in percent) of the first value and the sum of all values. A warning is returned if the first value is not defined or if all values sum up to zero. =back =item B<-c> I =item B<-w> I Set the critical (B<-c>) and warning (B<-w>) ranges. These options mostly follow the normal syntax of Nagios plugins. The general format is "IB<:>I". If a value is smaller than I or bigger than I, a I or I status is returned, otherwise the status is I. The tilde sign (B<~>) can be used to explicitly specify infinity. If B<~> is used as a I value, negative infinity is used. In case of I, it is interpreted as positive infinity. If the first character of the I is the atEsign (B<@>), the meaning of the range will be inverted. I.Ee. all values I the range will yield a I or I status, while all values I the range will result in a I status. I (and the colon) may be omitted, I is then assumed to be zero. If I (but not the trailing colon) is omitted, I is assumed to be positive infinity. =item B<-m> If this option is given, "Not a Number" (NaN) is treated as I. By default, the I consolidation reports NaNs as I. Other consolidations simply ignore NaN values. =back =head1 RETURN VALUE As usual for Nagios plugins, this program writes a short, one line status message to STDOUT and signals success or failure with its return value. It exits with a return value of B<0> for I, B<1> for I and B<2> for I. If the values are not available or some other error occurred, it returns B<3> for I. =head1 SEE ALSO L, L, L, L =head1 AUTHOR Florian Forster EoctoEatEcollectd.orgE =cut