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Archiving Log Files
Internal-daemon Log Rotation
This type of log rotation happens within the HTTP daemon and can only be
configured at startup time. Internal daemon log rotation allows the server to rotate
logs internally without requiring a server restart. Logs rotated using this method
are saved in the following format:
access.<4-digit year><2-digit month><2-digit day><4-digit 24-hr time>
error.<4-digit year><2-digit month><2-digit day><4-digit 24-hr time>
You can specify the time used as a basis to rotate log files and start a new log file.
For example, if the rotation start time is 12:00 a.m., and the rotation interval is 1440
minutes (one day), a new log file will be created immediately upon save regardless
of the present time and collect information until the rotation start time. The log file
will rotate every day at 12:00 a.m., and the access log will be stamped at 12:00 a.m.
and saved as
. Likewise, if you set the interval at 240
access.199907152400
minutes (4 hours), the 4 hour intervals begin at 12:00 a.m. such that the access log
files will contain information gathered from 12:00 a.m. to 4:00 a.m., from 4:00 a.m.
to 8:00 a.m., and so forth.
If log rotation is enabled, log file rotation starts at server startup. The first log file to
be rotated gathers information from the current time until the next rotation time.
Using the previous example, if you set your start time at 12:00 a.m. and your
rotation interval at 240 minutes, and the current time is 6:00 a.m., the first log file to
be rotated will contain the information gathered from 6:00 a.m. to 8:00 a.m, and the
next log file will contain information from 8:00 a.m. to 12:00 p.m. (noon), and so
forth.
Cron-based Log Rotation
This type of log rotation is based on the time stored in the
file in the
cron.conf
server_root
directory. This method allows you to archive
/https-admserv/config/
log files immediately or have the server archive log files at a specific time on
specific days. The server's cron configuration options are stored in
ns-cron.conf
in the server_root
directory. Logs rotated using the cron
/https-admserv/config/
based method are saved as the original filename followed by the date and time the
file was rotated. For example,
might become
when
access
access.24Apr-0430PM
it is rotated at 4:30 p.m.
Log rotation is initialized at server startup. If rotation is turned on, Enterprise
Server creates a time-stamped access log file and rotation starts at server startup.
Chapter 9
Using Log Files
211
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