collectd-nagios - Nagios plugin for querying collectd

       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.

       -ssocket
           Path of the UNIX socket opened by collectd's "unixsock plugin".

       -nvalue_spec
           The value to read from collectd. The argument is in the form "plugin[-instance]/type[-instance]".

       -Hhostname
           Hostname to query the values for.

       -ddata_source
           Each  value_spec  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 -g
           option.

       -gnone|average|sum
           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:

           none
               No  consolidation  if  done  and  the  warning  and  critical  regions  are applied to each value
               independently.

           average
               The warning and critical ranges are applied to the average of all values.

           sum The warning and critical ranges are applied to the sum of all values.

           percentage
               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.

       -crange-wrange
           Set the critical (-c) and warning (-w) ranges. These options  mostly  follow  the  normal  syntax  of
           Nagios plugins. The general format is "min:max". If a value is smaller than min or bigger than max, a
           warning or critical status is returned, otherwise the status is success.

           The  tilde sign (~) can be used to explicitly specify infinity. If ~ is used as a min value, negative
           infinity is used. In case of max, it is interpreted as positive infinity.

           If the first character of the range is the at sign (@), the meaning of the range  will  be  inverted.
           I. e.  all  values within the range will yield a warning or critical status, while all values outside
           the range will result in a success status.

           min (and the colon) may be omitted, min is then assumed to be zero. If  max  (but  not  the  trailing
           colon) is omitted, max is assumed to be positive infinity.

       -m  If  this  option  is  given,  "Not  a  Number"  (NaN)  is  treated  as critical. By default, the none
           consolidation reports NaNs as warning. Other consolidations simply ignore NaN values.

       Florian Forster <octo at collectd.org>

5.12.0.git                                         2025-03-16                                 COLLECTD-NAGIOS(1)

       This small program is the glue between collectd and nagios. collectd collects various performance
       statistics which it provides via the "unixsock plugin", see collectd-unixsock(5). This program is called
       by Nagios, connects to the UNIX socket and reads the values from collectd. It then returns OKAY, WARNING
       or CRITICAL depending on the values and the ranges provided by Nagios.

       collectd-nagios - Nagios plugin for querying collectd

       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 0 for success, 1 for warning
       and 2 for critical. If the values are not available or some  other  error  occurred,  it  returns  3  for
       unknown.

collectd(1), collectd.conf(5), collectd-unixsock(5), <http://nagios.org/>

       collectd-nagios -ssocket-nvalue_spec-Hhostname[options]