doc::smokeping::probes::passwordchecker(3)
NAME
Smokeping::probes::passwordchecker - A Base Class for implementing
SmokePing Probes
OVERVIEW
Like Smokeping::probes::basefork, but supports a probe-specific
configuration file for storing passwords and a method for accessing
them.
SYNOPSIS
*** Probes *** +passwordchecker forks = 5 offset = 50% passwordfile = /some/place/secret step = 300 timeout = 15 # The following variables can be overridden in each target section pings = 5 # [...] *** Targets *** probe = passwordchecker # if this should be the default probe # [...] + mytarget # probe = passwordchecker # if the default probe is something else host = my.host pings = 5
DESCRIPTION
synopsis with more detail
- SmokePing main configuration file:
- *** Probes ***
+ MyPasswordChecker
# location of the file containing usernames and passwords
passwordfile = /usr/share/smokeping/etc/passwords - The specified password file:
# host:username:password
host1:joe:hardlyasecret# comments and whitespace lines are allowed- host2:sue:notasecreteither
- Actual description
- In implementing authentication probes, it might not be desirable to
store the necessary cleartext passwords in the SmokePing main
configuration file, since the latter must be readable both by the
SmokePing daemon performing the probes and the CGI that displays the
results. If the passwords are stored in a different file, this file can be made readable by only the user the daemon runs as. This way we can
be sure that nobody can trick the CGI into displaying the passwords on the Web. - This module reads the passwords in at startup from the file specified
in the probe-specific variable `passwordfile'. The passwords can later be accessed and modified by the password method, that needs the corresponding host and username as arguments. - Password file format
- The password file format is simply one line for each triplet of host,
username and password, separated from each other by colons (:). - Comment lines, starting with the `#' sign, are ignored, as well as
empty lines.
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 probespecific 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%
- passwordfile
- Location of the file containing usernames and passwords.
- Example value: /some/place/secret
- 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
- How long a single 'ping' takes at maximum
- Example value: 15
- Default value: 5
- Supported target-specific variables:
- 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
AUTHORS
Niko Tyni <ntyni@iki.fi>
BUGS
The need for storing cleartext passwords can be considered a bug in
itself.
SEE ALSO
- Smokeping::probes::basefork, Smokeping::probes::Radius,
Smokeping::probes::LDAP