doc::smokeping::probes::ldap(3)
NAME
Smokeping::probes::LDAP - a LDAP probe for SmokePing
OVERVIEW
Measures LDAP search latency for SmokePing
SYNOPSIS
*** Probes *** +LDAP forks = 5 offset = 50% passwordfile = /some/place/secret step = 300 # The following variables can be overridden in each target section attrs = uid,someotherattr base = dc=foo,dc=bar binddn = uid=testuser,dc=foo,dc=bar filter = uid=testuser # mandatory mininterval = 1 password = mypass pings = 5 port = 389 scope = one start_tls = 1 timeout = 10 version = 3 # [...] *** Targets *** probe = LDAP # if this should be the default probe # [...] + mytarget # probe = LDAP # if the default probe is something else host = my.host attrs = uid,someotherattr base = dc=foo,dc=bar binddn = uid=testuser,dc=foo,dc=bar filter = uid=testuser # mandatory mininterval = 1 password = mypass pings = 5 port = 389 scope = one start_tls = 1 timeout = 10 version = 3
DESCRIPTION
This probe measures LDAP query latency for SmokePing. The query is
specified by the target-specific variable `filter' and, optionally, by
the target-specific variable `base'. The attributes queried can be
specified in the comma-separated list `attrs'.
The TCP port of the LDAP server and the LDAP version to be used can be
specified by the variables `port' and `version'.
The probe can issue the starttls command to convert the connection into
encrypted mode, if so instructed by the `start_tls' variable. This
requires the 'IO::Socket::SSL' perl module to be installed.
The probe can also optionally do an authenticated LDAP bind, if the
`binddn' variable is present. The password to be used can be specified
by the target-specific variable `password' or in an external file. The
location of this file is given in the probe-specific variable
`passwordfile'. See Smokeping::probes::passwordchecker(3pm) for the
format of this file (summary: colon-separated triplets of the form
`<host>:<bind-dn>:<password>')
The probe tries to be nice to the server and does not send
authentication requests more frequently than once every X seconds,
where X is the value of the target-specific "min_interval" variable (1
by default).
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
- Supported target-specific variables:
- attrs
- The attributes queried.
- Example value: uid,someotherattr
- base
- The base to be used in the LDAP query
- Example value: dc=foo,dc=bar
- binddn
- If present, authenticate the LDAP bind with this DN.
- Example value: uid=testuser,dc=foo,dc=bar
- filter
- The actual search to be made
- Example value: uid=testuser
- This setting is mandatory.
- mininterval
- The minimum interval between each query sent, in (possibly
fractional) second s. - Default value: 1
- password
- The password to be used, if not present in <passwordfile>.
- Example value: mypass
- 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
- TCP port of the LDAP server
- Example value: 389
- scope
- The scope of the query. Can be either 'base', 'one' or 'sub'. See
the Net::LDAP documentation for details. - Example value: one
- Default value: sub
- start_tls
- If true, encrypt the connection with the starttls command. Disabled by default.
- Example value: 1
- timeout
- LDAP query timeout in seconds.
- Example value: 10
- Default value: 5
- version
- The LDAP version to be used.
- Example value: 3
AUTHORS
Niko Tyni <ntyni@iki.fi>
BUGS
There should be a way of specifying TLS options, such as the
certificates involved etc.
- The probe has an ugly way of working around the fact that the
IO::Socket::SSL class complains if start_tls() is done more than once in the same program. But It Works For Me (tm).