Apache HTTP Server Version 2.2
rotatelogs is a simple program for use in
conjunction with Apache's piped logfile feature. It supports
rotation based on a time interval or maximum size of the log.
[ -l ]
[ -f ]
[ offset ]
strftime(3)formatting with size-based rotation. Note that using
-lin an environment which changes the GMT offset (such as for BST or DST) can lead to unpredictable results!
rotatelogsstarts, instead of waiting for the first logfile entry to be read (for non-busy sites, there may be a substantial delay between when the server is started and when the first request is handled, meaning that the associated logfile does not "exist" until then, which causes problems from some automated logging tools). Available in version 2.2.9 and later.
strftime(3). Otherwise, the suffix .nnnnnnnnnn is automatically added and is the time in seconds. Both formats compute the start time from the beginning of the current period. For example, if a rotation time of 86400 is specified, the hour, minute, and second fields created from the
strftime(3)format will all be zero, referring to the beginning of the current 24-hour period (midnight).
Mto specify size rather than time.
-300for this argument. In most cases,
-lshould be used instead of specifying an offset.
CustomLog "|bin/rotatelogs /var/logs/logfile 86400" common
This creates the files /var/logs/logfile.nnnn where nnnn is the system time at which the log nominally starts (this time will always be a multiple of the rotation time, so you can synchronize cron scripts with it). At the end of each rotation time (here after 24 hours) a new log is started.
CustomLog "|bin/rotatelogs -l /var/logs/logfile.%Y.%m.%d 86400" common
This creates the files /var/logs/logfile.yyyy.mm.dd where yyyy is the year, mm is the month, and dd is the day of the month. Logging will switch to a new file every day at midnight, local time.
CustomLog "|bin/rotatelogs /var/logs/logfile 5M" common
This configuration will rotate the logfile whenever it reaches a size of 5 megabytes.
ErrorLog "|bin/rotatelogs /var/logs/errorlog.%Y-%m-%d-%H_%M_%S 5M"
This configuration will rotate the error logfile whenever it
reaches a size of 5 megabytes, and the suffix to the logfile name
will be created of the form
The following logfile format string substitutions should be
supported by all
strftime(3) implementations, see
strftime(3) man page for library-specific
|full weekday name (localized)|
|3-character weekday name (localized)|
|full month name (localized)|
|3-character month name (localized)|
|date and time (localized)|
|2-digit day of month|
|2-digit hour (24 hour clock)|
|2-digit hour (12 hour clock)|
|3-digit day of year|
|am/pm of 12 hour clock (localized)|
|2-digit week of year (Sunday first day of week)|
|2-digit week of year (Monday first day of week)|
|1-digit weekday (Sunday first day of week)|
|time zone name|