Smokeping_probes_AnotherDNS(3) SmokePing Smokeping_probes_AnotherDNS(3)
NAME
Smokeping::probes::AnotherDNS - Alternate DNS Probe
SYNOPSIS
*** Probes ***
+AnotherDNS
forks = 5
offset = 50%
step = 300
# The following variables can be overridden in each target section
/^influx_.+/ = influx_location = In the basement
authoritative = 0
expect_text = 192.168.50.60
ipversion = 4
lookup = www.example.org
mininterval = 0.5
pings = 5
port = 53
protocol = udp
recordtype = A
require_answers = 0
require_noerror = 0
require_nxdomain = 0
timeout = 5
# [...]
*** Targets ***
probe = AnotherDNS # if this should be the default probe
# [...]
+ mytarget
# probe = AnotherDNS # if the default probe is something else
host = my.host
/^influx_.+/ = influx_location = In the basement
authoritative = 0
expect_text = 192.168.50.60
ipversion = 4
lookup = www.example.org
mininterval = 0.5
pings = 5
port = 53
protocol = udp
recordtype = A
require_answers = 0
require_noerror = 0
require_nxdomain = 0
timeout = 5
DESCRIPTION
Like DNS, but uses Net::DNS and Time::HiRes instead of dig. This probe
does *not* retry the request three times before it is considered "lost",
like dig and other resolver do by default. If operating as caching
Nameserver, BIND (and maybe others) expect clients to retry the request
if the answer is not in the cache. So, ask the nameserver for something
that he is authoritative for if you want measure the network packet loss
correctly.
If you have a really fast network and nameserver, you will notice that
this probe reports the query time in microsecond resolution. :-)
VARIABLES
Supported probe-specific variables:
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
acquisition 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:
/^influx_.+/
This is a tag that will be sent to influxdb and has no impact on the
probe measurement. The tag name will be sent without the "influx_"
prefix, which will be replaced with "tag_" instead. Tags can be used
for filtering.
Example value: influx_location = In the basement
authoritative
Send non-recursive queries and require authoritative answers.
Default value: 0
expect_text
A string that should be present in the DNS answer. This can be used
to verify that an A record contains the expected IP address, a PTR
record reflects the expected hostname, etc. If the query returns
multiple records, any single match will pass the test.
Example value: 192.168.50.60
ipversion
The IP protocol used. Possible values are "4" and "6". Passed to
echoping(1) as the "-4" or "-6" options.
Example value: 4
Default value: 4
lookup
Name of the host to look up in the dns.
Example value: www.example.org
mininterval
Minimum time between sending two lookup queries in (possibly
fractional) seconds.
Default value: 0.5
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 UDP Port to use.
Default value: 53
protocol
The Network Protocol to use.
Default value: udp
recordtype
Record type to look up.
Default value: A
require_answers
Only Count Answers with answer count >= this value.
Default value: 0
require_noerror
Only Count Answers with Response Status NOERROR.
Default value: 0
require_nxdomain
Set to 1 if NXDOMAIN should be interpreted as success instead of
failure. This reverses the normal behavior of the probe. Example
uses include testing a DNS firewall, verifying that a mail server IP
is not listed on a DNSBL, or other scenarios where NXDOMAIN is
desired.
Example value: 0
Default value: 0
timeout
Timeout for a single request in seconds.
Default value: 5
AUTHORS
Christoph Heine <Christoph.Heine@HaDiKo.DE>
2.8.2 2024-02-04 Smokeping_probes_AnotherDNS(3)
Generated by dwww version 1.16 on Tue Dec 16 05:33:54 CET 2025.