NAME

       Smokeping::probes::EchoPingHttp - an echoping(1) probe for SmokePing

OVERVIEW

       Measures HTTP roundtrip times (web servers and caches) for SmokePing.

SYNOPSIS

        *** Probes ***

        +EchoPingHttp

        binary = /usr/bin/echoping
        forks = 5
        offset = 50%
        step = 300

        # The following variables can be overridden in each target section
        accept_redirects = yes
        extraopts = -some-letter-the-author-did-not-think-of
        ignore_cache = yes
        ipversion = 4
        pings = 5
        port = 80
        priority = 6
        revalidate_data = no
        timeout = 1
        tos = 0xa0
        url = /
        waittime = 1

        # [...]

        *** Targets ***

        probe = EchoPingHttp # if this should be the default probe

        # [...]

        + mytarget
        # probe = EchoPingHttp # if the default probe is something else
        host = my.host
        accept_redirects = yes
        extraopts = -some-letter-the-author-did-not-think-of
        ignore_cache = yes
        ipversion = 4
        pings = 5
        port = 80
        priority = 6
        revalidate_data = no
        timeout = 1
        tos = 0xa0
        url = /
        waittime = 1

VARIABLES

       Supported probe-specific variables:

       binary
           The location of your echoping binary.

           Default value: /usr/bin/echoping

       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

       Supported target-specific variables:

       accept_redirects
           The echoping(1) "-R" option: Accept  HTTP  status  codes  3xx (redirections) as normal
           responses instead of treating them as errors. Note that this option is only available
           starting with Echoping 6.

           Enabled if the value is anything other than 'no' or '0'.

           Example value: yes

       extraopts
           Any extra options specified here will be passed unmodified to echoping(1).

           Example value: -some-letter-the-author-did-not-think-of

       ignore_cache
           The echoping(1) "-A" option: force the proxy to ignore the cache.  Enabled if the
           value is anything other than 'no' or '0'.

           Example value: yes

       ipversion
           The IP protocol used. Possible values are "4" and "6".  Passed to echoping(1) as the
           "-4" or "-6" options.

           Example value: 4

       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

       port
           The TCP port to use.

           Example value: 80

       priority
           The "-p" echoping(1) option.

           Example value: 6

       revalidate_data
           The echoping(1) "-a" option: force the proxy to revalidate data with original server.
           Enabled if the value is anything other than 'no' or '0'.

           Example value: no

       timeout
           The "-t" echoping(1) option.

           Example value: 1

           Default value: 5

       tos The "-P" echoping(1) option.

           Example value: 0xa0

       url The URL to be requested from the web server or cache. Can be either relative (/...)
           for web servers or absolute (http://...) for caches.

           Default value: /

       waittime
           The "-w" echoping(1) option.

           Example value: 1

AUTHORS

       Niko Tyni <ntyni@iki.fi>

NOTES

       You should consider setting a lower value for the "pings" variable than the default 20, as
       repetitive URL fetching may be quite heavy on the server.

       The fill, size and udp EchoPing variables are not valid for EchoPingHttp.

SEE ALSO

       Smokeping::probes::EchoPing, Smokeping::probes::EchoPingHttps