1Smokeping_probes_AnotherCurl(3)    SmokePing   Smokeping_probes_AnotherCurl(3)
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NAME

6       Smokeping::probes::AnotherCurl - a curl(1) probe for SmokePing
7

OVERVIEW

9       Fetches an HTTP or HTTPS URL using curl(1).
10

SYNOPSIS

12        *** Probes ***
13
14        +AnotherCurl
15
16        binary = /usr/bin/curl
17        forks = 5
18        offset = 50%
19        step = 300
20
21        # The following variables can be overridden in each target section
22        /^influx_.+/ = influx_location = In the basement
23        agent = User-Agent: Lynx/2.8.4rel.1 libwww-FM/2.14 SSL-MM/1.4.1 OpenSSL/0.9.6c
24        extraargs = -6 --head --user user:password
25        extrare = / /
26        follow_redirects = yes
27        include_redirects = yes
28        insecure_ssl = 1
29        interface = eth0
30        pings = 5
31        ssl2 = 1
32        timeout = 20
33        urlformat = http://%host%/ # mandatory
34        write_out =
35
36        # [...]
37
38        *** Targets ***
39
40        probe = AnotherCurl # if this should be the default probe
41
42        # [...]
43
44        + mytarget
45        # probe = AnotherCurl # if the default probe is something else
46        host = my.host
47        /^influx_.+/ = influx_location = In the basement
48        agent = User-Agent: Lynx/2.8.4rel.1 libwww-FM/2.14 SSL-MM/1.4.1 OpenSSL/0.9.6c
49        extraargs = -6 --head --user user:password
50        extrare = / /
51        follow_redirects = yes
52        include_redirects = yes
53        insecure_ssl = 1
54        interface = eth0
55        pings = 5
56        ssl2 = 1
57        timeout = 20
58        urlformat = http://%host%/ # mandatory
59        write_out =
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DESCRIPTION

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

65       Supported probe-specific variables:
66
67       binary
68           The location of your curl binary.
69
70           Default value: /usr/bin/curl
71
72       forks
73           Run this many concurrent processes at maximum
74
75           Example value: 5
76
77           Default value: 5
78
79       offset
80           If you run many probes concurrently you may want to prevent them
81           from hitting your network all at the same time. Using the probe-
82           specific offset parameter you can change the point in time when
83           each probe will be run. Offset is specified in % of total interval,
84           or alternatively as 'random', and the offset from the 'General'
85           section is used if nothing is specified here. Note that this does
86           NOT influence the rrds itself, it is just a matter of when data
87           acquisition is initiated.  (This variable is only applicable if the
88           variable 'concurrentprobes' is set in the 'General' section.)
89
90           Example value: 50%
91
92       step
93           Duration of the base interval that this probe should use, if
94           different from the one specified in the 'Database' section. Note
95           that the step in the RRD files is fixed when they are originally
96           generated, and if you change the step parameter afterwards, you'll
97           have to delete the old RRD files or somehow convert them. (This
98           variable is only applicable if the variable 'concurrentprobes' is
99           set in the 'General' section.)
100
101           Example value: 300
102
103       Supported target-specific variables:
104
105       /^influx_.+/
106           This is a tag that will be sent to influxdb and has no impact on
107           the probe measurement. The tag name will be sent without the
108           "influx_" prefix, which will be replaced with "tag_" instead. Tags
109           can be used for filtering.
110
111           Example value: influx_location = In the basement
112
113       agent
114           The "-A" curl(1) option.  This is a full HTTP User-Agent header
115           including the words "User-Agent:". Note that it does not need any
116           quotes around it.
117
118           Example value: User-Agent: Lynx/2.8.4rel.1 libwww-FM/2.14
119           SSL-MM/1.4.1 OpenSSL/0.9.6c
120
121       extraargs
122           Any extra arguments you might want to hand to curl(1). The
123           arguments should be separated by the regexp specified in "extrare",
124           which contains just the space character (" ") by default.
125
126           Note that curl will be called with the resulting list of arguments
127           without any shell expansion. If you need to specify any arguments
128           containing spaces, you should set "extrare" to something else.
129
130           As a complicated example, to explicitly set the "Host:" header in
131           Curl requests, you need to set "extrare" to something else, eg.
132           "/;/", and then specify "extraargs = --header;Host:
133           www.example.com".
134
135           Example value: -6 --head --user user:password
136
137       extrare
138           The regexp used to split the extraargs string into an argument
139           list, in the "/regexp/" notation.  This contains just the space
140           character (" ") by default, but if you need to specify any
141           arguments containing spaces, you can set this variable to a
142           different value.
143
144           Example value: / /
145
146           Default value: / /
147
148       follow_redirects
149           If this variable is set to 'yes', curl will follow any HTTP
150           redirection steps (the '-L' option).  If set to 'no', HTTP
151           Location: headers will not be followed. See also
152           'include_redirects'.
153
154           Example value: yes
155
156           Default value: no
157
158       include_redirects
159           If this variable is set to 'yes', the measurement result will
160           include the time spent on following any HTTP redirection steps. If
161           set to 'no', only the last step is measured. See also
162           'follow_redirects'.
163
164           Example value: yes
165
166           Default value: no
167
168       insecure_ssl
169           The "-k" curl(1) option. Accept SSL connections that don't have a
170           secure certificate chain to a trusted CA. Note that if you are
171           going to monitor https targets, you'll probably have to either
172           enable this option or specify the CA path to curl through extraargs
173           below. For more info, see the curl(1) manual page.
174
175           Example value: 1
176
177       interface
178           The "--interface" curl(1) option.  Bind to a specific interface, IP
179           address or host name.
180
181           Example value: eth0
182
183       pings
184           How many pings should be sent to each target, if different from the
185           global value specified in the Database section. Note that the
186           number of pings in the RRD files is fixed when they are originally
187           generated, and if you change this parameter afterwards, you'll have
188           to delete the old RRD files or somehow convert them.
189
190           Example value: 5
191
192       ssl2
193           The "-2" curl(1) option.  Force SSL2.
194
195           Example value: 1
196
197       timeout
198           The "-m" curl(1) option.  Maximum timeout in seconds.
199
200           Example value: 20
201
202           Default value: 10
203
204       urlformat
205           The template of the URL to fetch.  Can be any one that curl
206           supports.  Any occurrence of the string '%host%' will be replaced
207           with the host to be probed.
208
209           Example value: http://%host%/
210
211           This setting is mandatory.
212
213       write_out
214           Choose which write-out value you want to send to Smokeping. Value
215           can be one of: 'time_appconnect', 'time_connect',
216           'time_namelookup', 'time_pretransfer', 'time_redirect',
217           'time_starttransfer', 'time_total'.
218
219           Default behaviour is the same as legacy Curl probe one.
220

AUTHORS

222        Gerald Combs <gerald [AT] ethereal.com>
223        Niko Tyni <ntyni@iki.fi>
224        Jean Baptiste Favre <smokeping@jbfavre.org>
225

NOTES

227       You should consider setting a lower value for the "pings" variable than
228       the default 20, as repetitive URL fetching may be quite heavy on the
229       server.
230
231       The URL to be tested used to be specified by the variable 'url' in
232       earlier versions of Smokeping, and the 'host' setting did not influence
233       it in any way. The variable name has now been changed to 'urlformat',
234       and it can (and in most cases should) contain a placeholder for the
235       'host' variable.
236
237       Legacy Curl probe only returns page load time. With AnotherCurl, you
238       can specify which 'write-out' value you want to get (please refer to
239       curl(1) for more details about write_out option.
240

SEE ALSO

242       curl(1), <http://curl.haxx.se/>
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2462.8.2                             2023-01-21   Smokeping_probes_AnotherCurl(3)
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