trimhistory - Remove old Xymon history-log entries
trimhistory --cutoff=TIME [options]
tool is used to purge old entries from the Xymon history
logs. These logfiles accumulate information about all status changes that have
occurred for any given service, host, or the entire Xymon system, and is used
to generate the event- and history-log webpages.
Purging old entries can be done while Xymon is running, since the tool takes
care not to commit updates to a file if it changes mid-way through the
operation. In that case, the update is aborted and the existing logfile is
Optionally, this tool will also remove logfiles from hosts that are no longer
defined in the Xymon hosts.cfg(5)
file. As an extension, even logfiles
from services can be removed, if the service no longer has a valid
status-report logged in the current Xymon status.
- This defines the cutoff-time when processing the history
logs. Entries dated before this time are discarded. TIME is specified as
the number of seconds since the beginning of the Epoch. This is easily
generated by the GNU date(1) utility, e.g. the following command
will trim history logs of all entries prior to Oct. 1st 2004:
trimhistory --cutoff=`date +%s --date="1 Oct 2004"`
- Normally, files in the XYMONHISTDIR directory are replaced.
This option causes trimhistory to save the shortened history logfiles to
another directory, so you can verify that the operation works as intended.
The output directory must exist.
- Causes trimhistory to delete files from hosts that are not
listed in the hosts.cfg(5) file.
- Causes trimhistory to delete files from services that are
not currently tracked by Xymon. Normally these files would be left
untouched if only the host exists.
- Process the XYMONHISTLOGS directory also, and delete
status-logs from events prior to the cut-off time. Note that this can
dramatically increase the processing time, since there are often lots and
lots of files to process.
- This will cause trimhistory to output a status line for
every N history logs or status-log collections it processes, to indicate
how far it has progressed. The default setting for N is 100.
- Loads the environment from FILENAME before executing
- Enable debugging output.
- The eventlog of all events that have happened in Xymon.
- The per-host eventlogs.
- The per-service eventlogs.
- The historical status-logs.
- The directory holding all history logs.
- The top-level directory for the historical status-log
- The location of the hosts.cfg file, holding the list of
currently known hosts in Xymon.