Smokeping_probes_FPing(3) SmokePing Smokeping_probes_FPing(3)NAME
Smokeping::probes::FPing - FPing Probe for SmokePing
SYNOPSIS
*** Probes ***
+FPing
binary = /usr/bin/fping # mandatory
blazemode = true
hostinterval = 1.5
mininterval = 0.001
offset = 50%
packetsize = 5000
pings = 20
sourceaddress = 192.168.0.1
step = 300
timeout = 1.5
tos = 0x20
usestdout = true
# [...]
*** Targets ***
probe = FPing # if this should be the default probe
# [...]
+ mytarget
# probe = FPing # if the default probe is something else
host = my.host
DESCRIPTION
Integrates FPing as a probe into smokeping. The variable binary must
point to your copy of the FPing program. If it is not installed on
your system yet, you can get a slightly enhanced version from "pub" in
www.smokeping.org.
The (optional) packetsize option lets you configure the packetsize for
the pings sent.
Since version 3.3 fping sends its statistics to stdout. Set usestdout
to 'true' so make smokeping read stdout instead of stderr.
In blazemode, FPing sends one more ping than requested, and discards
the first RTT value returned as it's likely to be an outlier.
The FPing manpage has the following to say on this topic:
Number of bytes of ping data to send. The minimum size (normally 12)
allows room for the data that fping needs to do its work (sequence
number, timestamp). The reported received data size includes the IP
header (normally 20 bytes) and ICMP header (8 bytes), so the minimum
total size is 40 bytes. Default is 56, as in ping. Maximum is the
theoretical maximum IP datagram size (64K), though most systems limit
this to a smaller, system-dependent number.
VARIABLES
Supported probe-specific variables:
binary
The location of your fping binary.
Example value: /usr/bin/fping
This setting is mandatory.
blazemode
Send an extra ping and then discarge the first answer since the
first is bound to be an outliner.
Example value: true
hostinterval
The fping "-p" parameter, but in (possibly fractional) seconds
rather than milliseconds, for consistency with other Smokeping
probes. From fping(1):
This parameter sets the time that fping waits between successive
packets to an individual target.
Example value: 1.5
mininterval
The fping "-i" parameter, but in (probably fractional) seconds
rather than milliseconds, for consistency with other Smokeping
probes. From fping(1):
The minimum amount of time between sending a ping packet to any
target.
Example value: 0.001
Default value: 0.01
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%
packetsize
The ping packet size (in the range of 12-64000 bytes).
Example value: 5000
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: 20
sourceaddress
The fping "-S" parameter . From fping(1):
Set source address.
Example value: 192.168.0.1
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
timeout
The fping "-t" parameter, but in (possibly fractional) seconds
rather than milliseconds, for consistency with other Smokeping
probes. Note that as Smokeping uses the fping 'counting' mode (-C),
this apparently only affects the last ping.
Example value: 1.5
tos Set the type of service (TOS) of outgoing ICMP packets. You need
at laeast fping-2.4b2_to3-ipv6 for this to work. Find a copy on
www.smokeping.org/pub.
Example value: 0x20
usestdout
Listen for FPing output on stdout instead of stderr ... (version
3.3+ sends its statistics on stdout).
Example value: true
AUTHORS
Tobias Oetiker <tobi@oetiker.ch>
2.6.11 2016-02-19 Smokeping_probes_FPing(3)
