1Smokeping_probes_AnotherDNS(3) SmokePing Smokeping_probes_AnotherDNS(3)
2
6 Smokeping::probes::AnotherDNS - Alternate DNS Probe
7
9 *** Probes ***
10 +AnotherDNS
12 forks = 5
14 offset = 50%
15 step = 300
16 # The following variables can be overridden in each target section
18 /^influx_.+/ = influx_location = In the basement
19 authoritative = 0
20 expect_text = 192.168.50.60
21 ipversion = 4
22 lookup = www.example.org
23 mininterval = 0.5
24 pings = 5
25 port = 53
26 protocol = udp
27 recordtype = A
28 require_answers = 0
29 require_noerror = 0
30 require_nxdomain = 0
31 timeout = 5
32 # [...]
34 *** Targets ***
36 probe = AnotherDNS # if this should be the default probe
38 # [...]
40 + mytarget
42 # probe = AnotherDNS # if the default probe is something else
43 host = my.host
44 /^influx_.+/ = influx_location = In the basement
45 authoritative = 0
46 expect_text = 192.168.50.60
47 ipversion = 4
48 lookup = www.example.org
49 mininterval = 0.5
50 pings = 5
51 port = 53
52 protocol = udp
53 recordtype = A
54 require_answers = 0
55 require_noerror = 0
56 require_nxdomain = 0
57 timeout = 5
58
60 Like DNS, but uses Net::DNS and Time::HiRes instead of dig. This probe
61 does *not* retry the request three times before it is considered
62 "lost", like dig and other resolver do by default. If operating as
63 caching Nameserver, BIND (and maybe others) expect clients to retry the
64 request if the answer is not in the cache. So, ask the nameserver for
65 something that he is authoritative for if you want measure the network
66 packet loss correctly.
67 If you have a really fast network and nameserver, you will notice that
69 this probe reports the query time in microsecond resolution. :-)
70
72 Supported probe-specific variables:
73 forks
75 Run this many concurrent processes at maximum
76 Example value: 5
78 Default value: 5
80 offset
82 If you run many probes concurrently you may want to prevent them
83 from hitting your network all at the same time. Using the probe-
84 specific offset parameter you can change the point in time when
85 each probe will be run. Offset is specified in % of total interval,
86 or alternatively as 'random', and the offset from the 'General'
87 section is used if nothing is specified here. Note that this does
88 NOT influence the rrds itself, it is just a matter of when data
89 acquisition is initiated. (This variable is only applicable if the
90 variable 'concurrentprobes' is set in the 'General' section.)
91 Example value: 50%
93 step
95 Duration of the base interval that this probe should use, if
96 different from the one specified in the 'Database' section. Note
97 that the step in the RRD files is fixed when they are originally
98 generated, and if you change the step parameter afterwards, you'll
99 have to delete the old RRD files or somehow convert them. (This
100 variable is only applicable if the variable 'concurrentprobes' is
101 set in the 'General' section.)
102 Example value: 300
104 Supported target-specific variables:
106 /^influx_.+/
108 This is a tag that will be sent to influxdb and has no impact on
109 the probe measurement. The tag name will be sent without the
110 "influx_" prefix, which will be replaced with "tag_" instead. Tags
111 can be used for filtering.
112 Example value: influx_location = In the basement
114 authoritative
116 Send non-recursive queries and require authoritative answers.
117 Default value: 0
119 expect_text
121 A string that should be present in the DNS answer. This can be used
122 to verify that an A record contains the expected IP address, a PTR
123 record reflects the expected hostname, etc. If the query returns
124 multiple records, any single match will pass the test.
125 Example value: 192.168.50.60
127 ipversion
129 The IP protocol used. Possible values are "4" and "6". Passed to
130 echoping(1) as the "-4" or "-6" options.
131 Example value: 4
133 Default value: 4
135 lookup
137 Name of the host to look up in the dns.
138 Example value: www.example.org
140 mininterval
142 Minimum time between sending two lookup queries in (possibly
143 fractional) seconds.
144 Default value: 0.5
146 pings
148 How many pings should be sent to each target, if different from the
149 global value specified in the Database section. Note that the
150 number of pings in the RRD files is fixed when they are originally
151 generated, and if you change this parameter afterwards, you'll have
152 to delete the old RRD files or somehow convert them.
153 Example value: 5
155 port
157 The UDP Port to use.
158 Default value: 53
160 protocol
162 The Network Protocol to use.
163 Default value: udp
165 recordtype
167 Record type to look up.
168 Default value: A
170 require_answers
172 Only Count Answers with answer count >= this value.
173 Default value: 0
175 require_noerror
177 Only Count Answers with Response Status NOERROR.
178 Default value: 0
180 require_nxdomain
182 Set to 1 if NXDOMAIN should be interpreted as success instead of
183 failure. This reverses the normal behavior of the probe. Example
184 uses include testing a DNS firewall, verifying that a mail server
185 IP is not listed on a DNSBL, or other scenarios where NXDOMAIN is
186 desired.
187 Example value: 0
189 Default value: 0
191 timeout
193 Timeout for a single request in seconds.
194 Default value: 5
196
198 Christoph Heine <Christoph.Heine@HaDiKo.DE>
1992.8.2 2022-01-22 Smokeping_probes_AnotherDNS(3)