NAME

       Smokeping::probes::AnotherCurl - a curl(1) probe for SmokePing

OVERVIEW

       Fetches an HTTP or HTTPS URL using curl(1).

SYNOPSIS

        *** Probes ***

        +AnotherCurl

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

        # The following variables can be overridden in each target section
        agent = User-Agent: Lynx/2.8.4rel.1 libwww-FM/2.14 SSL-MM/1.4.1 OpenSSL/0.9.6c
        extraargs = -6 --head --user user:password
        extrare = / /
        follow_redirects = yes
        include_redirects = yes
        insecure_ssl = 1
        interface = eth0
        pings = 5
        ssl2 = 1
        timeout = 20
        urlformat = http://%host%/ # mandatory
        write_out =

        # [...]

        *** Targets ***

        probe = AnotherCurl # if this should be the default probe

        # [...]

        + mytarget
        # probe = AnotherCurl # if the default probe is something else
        host = my.host
        agent = User-Agent: Lynx/2.8.4rel.1 libwww-FM/2.14 SSL-MM/1.4.1 OpenSSL/0.9.6c
        extraargs = -6 --head --user user:password
        extrare = / /
        follow_redirects = yes
        include_redirects = yes
        insecure_ssl = 1
        interface = eth0
        pings = 5
        ssl2 = 1
        timeout = 20
        urlformat = http://%host%/ # mandatory
        write_out =

DESCRIPTION

       (see curl(1) for details of the options below)

VARIABLES

       Supported probe-specific variables:

       binary
           The location of your curl binary.

           Default value: /usr/bin/curl

       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:

       agent
           The "-A" curl(1) option.  This is a full HTTP User-Agent header including the words "User-Agent:".
           Note that it does not need any quotes around it.

           Example value: User-Agent: Lynx/2.8.4rel.1 libwww-FM/2.14 SSL-MM/1.4.1 OpenSSL/0.9.6c

       extraargs
           Any extra arguments you might want to hand to curl(1). The arguments should be separated by the
           regexp specified in "extrare", which contains just the space character (" ") by default.

           Note that curl will be called with the resulting list of arguments without any shell expansion. If
           you need to specify any arguments containing spaces, you should set "extrare" to something else.

           As a complicated example, to explicitly set the "Host:" header in Curl requests, you need to set
           "extrare" to something else, eg. "/;/", and then specify "extraargs = --header;Host:
           www.example.com".

           Example value: -6 --head --user user:password

       extrare
           The regexp used to split the extraargs string into an argument list, in the "/regexp/" notation.
           This contains just the space character (" ") by default, but if you need to specify any arguments
           containing spaces, you can set this variable to a different value.

           Example value: / /

           Default value: / /

       follow_redirects
           If this variable is set to 'yes', curl will follow any HTTP redirection steps (the '-L' option).  If
           set to 'no', HTTP Location: headers will not be followed. See also 'include_redirects'.

           Example value: yes

           Default value: no

       include_redirects
           If this variable is set to 'yes', the measurement result will include the time spent on following any
           HTTP redirection steps. If set to 'no', only the last step is measured. See also 'follow_redirects'.

           Example value: yes

           Default value: no

       insecure_ssl
           The "-k" curl(1) option. Accept SSL connections that don't have a secure certificate chain to a
           trusted CA. Note that if you are going to monitor https targets, you'll probably have to either
           enable this option or specify the CA path to curl through extraargs below. For more info, see the
           curl(1) manual page.

           Example value: 1

       interface
           The "--interface" curl(1) option.  Bind to a specific interface, IP address or host name.

           Example value: eth0

       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

       ssl2
           The "-2" curl(1) option.  Force SSL2.

           Example value: 1

       timeout
           The "-m" curl(1) option.  Maximum timeout in seconds.

           Example value: 20

           Default value: 10

       urlformat
           The template of the URL to fetch.  Can be any one that curl supports.  Any occurrence of the string
           '%host%' will be replaced with the host to be probed.

           Example value: http://%host%/

           This setting is mandatory.

       write_out
           Choose which write-out value you want to send to Smokeping. Value can be one of: 'time_appconnect',
           'time_connect', 'time_namelookup', 'time_pretransfer', 'time_redirect', 'time_starttransfer',
           'time_total'.

           Default behaviour is the same as legacy Curl probe one.

AUTHORS

        Gerald Combs <gerald [AT] ethereal.com>
        Niko Tyni <ntyni@iki.fi>
        Jean Baptiste Favre <smokeping@jbfavre.org>

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 URL to be tested used to be specified by the variable 'url' in earlier versions of Smokeping, and the
       'host' setting did not influence it in any way. The variable name has now been changed to 'urlformat',
       and it can (and in most cases should) contain a placeholder for the 'host' variable.

       Legacy Curl probe only returns page load time. With AnotherCurl, you can specify which 'write-out' value
       you want to get (please refer to curl(1) for more details about write_out option.

SEE ALSO

       curl(1), <http://curl.haxx.se/>