NAME

       Smokeping::probes::DNS - Name Service Probe for SmokePing

SYNOPSIS

        *** Probes ***

        +DNS

        binary = /usr/bin/dig # mandatory
        forks = 5
        offset = 50%
        step = 300
        timeout = 15

        # The following variables can be overridden in each target section
        lookup = www.example.org
        pings = 5
        server = ns1.someisp.net

        # [...]

        *** Targets ***

        probe = DNS # if this should be the default probe

        # [...]

        + mytarget
        # probe = DNS # if the default probe is something else
        host = my.host
        lookup = www.example.org
        pings = 5
        server = ns1.someisp.net

DESCRIPTION

       Integrates dig as a probe into smokeping. The variable binary must point to your copy of the dig program.
       If it is not installed on your system yet, you should install bind-utils >= 9.0.0.

       The Probe asks the given host n-times for it's name. Where n is the amount specified in the config File.

VARIABLES

       Supported probe-specific variables:

       binary
           The location of your dig binary.

           Example value: /usr/bin/dig

           This setting is mandatory.

       forks
           Run this many concurrent processes at maximum

           Example value: 5

           Default value: 5

       offset
           If you run many probes concurrently you may want to prevent them from hitting your network all at the
           same time. Using the probe-specific offset parameter you can change the point in time when each probe
           will be run. Offset is specified in % of total interval, or alternatively as 'random', and the offset
           from the 'General' section is used if nothing is specified here. Note that this does NOT influence
           the rrds itself, it is just a matter of when data acqusition is initiated.  (This variable is only
           applicable if the variable 'concurrentprobes' is set in the 'General' section.)

           Example value: 50%

       step
           Duration of the base interval that this probe should use, if different from the one specified in the
           'Database' section. Note that the step in the RRD files is fixed when they are originally generated,
           and if you change the step parameter afterwards, you'll have to delete the old RRD files or somehow
           convert them. (This variable is only applicable if the variable 'concurrentprobes' is set in the
           'General' section.)

           Example value: 300

       timeout
           How long a single 'ping' takes at maximum

           Example value: 15

           Default value: 5

       Supported target-specific variables:

       lookup
           Name of the host to look up in the dns.

           Example value: www.example.org

       pings
           How many pings should be sent to each target, if different from the global value specified in the
           Database section. Note that the number of pings in the RRD files is fixed when they are originally
           generated, and if you change this parameter afterwards, you'll have to delete the old RRD files or
           somehow convert them.

           Example value: 5

       server
           Name of the dns server to use.

           Example value: ns1.someisp.net

AUTHORS

        Igor Petrovski <pigor@myrealbox.com>,
        Carl Elkins <carl@celkins.org.uk>,
        Andre Stolze <stolze@uni-muenster.de>,
        Niko Tyni <ntyni@iki.fi>,
        Chris Poetzel<cpoetzel@anl.gov>