doc::Smokeping::probes::Ecdoc::Smokeping::probes::EchoPingHttp(3)



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
        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
        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 vari-
           able 'concurrentprobes' is set in the 'General' sec-
           tion.)

           Example value: 300

       Supported target-specific variables:

       extraopts
           Any extra options specified here will be passed unmod-
           ified to echoping(1).

           Example value: -some-let-
           ter-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 dif-
           ferent 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 reval-
           idate 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 abso-
           lute (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::EchoP-
       ingHttps



2.0.9                     doc::Smokeping::probes::EchoPingHttp(3)
