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CF-MONITORD(8) System Manager's Manual CF-MONITORD(8)


cf-monitord - monitoring daemon for CFEngine


cf-monitord [OPTION]... [FILE]


cf-monitord is the monitoring daemon for CFEngine. It samples probes defined in policy code and attempts to learn the normal system state based on current and past observations. Current estimates are made available as special variables (e.g. $(mon.av_cpu)) to cf-agent, which may use them to inform policy decisions.


Print the help message
Enable debugging output
Output verbose information about the behaviour of cf-monitord
All talk and no action mode - make no changes, only inform of promises not kept
Output the version of the software
Ignore system lock
Specify an alternative input file than the default. This option is overridden by FILE if supplied as argument.
Specify how detailed logs should be. Possible values: 'error', 'warning', 'notice', 'info', 'verbose', 'debug'
Print basic information about changes made to the system, i.e. promises repaired
Activate internal diagnostics (developers only)
Run process in foreground, not as a daemon
Ignored for backward compatibility
Interface with tcpdump if available to collect data about network
Enable colorized output. Possible values: 'always', 'auto', 'never'. If option is used, the default value is 'auto'
Log timestamps on each line of log output
Ignore def_preferred.json file in favor of def.json


CFEngine provides automated configuration management of large-scale computer systems. A system administrator describes the desired state of a system using CFEngine policy code. The program cf-agent reads policy code and attempts to bring the current system state to the desired state described. Policy code is downloaded by cf-agent from a cf-serverd daemon. The daemon cf-execd is responsible for running cf-agent periodically.
Documentation for CFEngine is available at


CFEngine is built on principles from promise theory, proposed by Mark Burgess in 2004. Promise theory is a model of voluntary cooperation between individual, autonomous actors or agents who publish their intentions to one another in the form of promises. A promise is a declaration of intent whose purpose is to increase the recipient's certainty about a claim of past, present or future behaviour. For a promise to increase certainty, the recipient needs to trust the promiser, but trust can also be built on the verification that previous promises have been kept, thus trust plays a symbiotic relationship with promises.
For an introduction to promise theory, please see


cf-monitord is part of CFEngine.
Binary packages may be downloaded from
The source code is available at


Please see the public bug-tracker at
GitHub pull-requests may be submitted to


cf-promises(8), cf-agent(8), cf-serverd(8), cf-execd(8), cf-monitord(8), cf-runagent(8), cf-key(8)


Mark Burgess and AS

CFEngine System Administration