> 3. I'm moving log files. I usually stop the
> server, move the log files out and start the server. It takes about 20
> seconds each time. I believe there is another way to do this, but
> moving files whilst they are being written to kind of scares me...
I've been doing it _another way_ for quite some time.
mv old_access_log_filename new_access_log_filename
mv old_error_log_filename new_error_log_filename
...
...
...
The program has an inode open, not the file name, so it continues to
write to the old files.
apachectl graceful or kill -USR1 apache-pid
Any apache processes currently serving users continue with the current
request and die. Processes that are waiting for a request die
instantly, and all are replaced with new processes. Something (I don't
know if it is the master Apache process, or the first new child) will
create a new set of log files, and all new processes will use them.
I do it at midnight each day, when traffic is low, but my understanding
of a graceful restart is that there is no downtime at all.
This also works for syslog files. You must kill -HUP the syslog process
to have it re-create the new log files for the day. It also blindly
keeps writing the old files till the restart signal is sent.
Rick Widmer
Internet Marketing Specialists
http://www.developersdesk.com
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