The monitoring_logging module provides a framework for logging sensor data to various systems, with an example implementation for logging to a file. It also includes a submodule to format log files for use with the Drupal nagios plugin.
This module allows you to log sensor results. This module provides a framework for writing plugins that log the results to different systems. There is an example implementation that logs the results to a file, using a formatter plugin. There is also a submodule providing a formatter plugin, that formats the logfile so that it can be read by the Drupal nagios plugin.