[Twisted-Python] Re: log rotation

Tsai Li Ming mailinglist at ltsai.com
Thu Sep 23 20:40:35 EDT 2004

James Y Knight wrote:
> On Sep 21, 2004, at 9:21 AM, <exarkun at divmod.com> wrote:
>>   logrotate should rotate twistd logfiles just fine.  It shuts down a 
>> process, moves its log files around, then restarts it.
> That's not how it normally works.
> Generally one of two strategies is employed:
> - Move the current log files, then send a signal to the process to tell 
> it to reload its configuration file, which causes it to reopen the 
> logfiles.
> - Copy the log files, and truncate the old file.
> The first option is much nicer, so ideally for integration with 
> logrotate, you would want to install some signal-handler that tells 
> twistd to reopen all its logfiles.
> James

Hi James,

That's what I would thought too.

1. logrotate will rotate the file. (server -> server.1)
2. a signal (usually a HUP) is sent to the process and the process will 
close the log file's FD. (server.1)
3. Process will reload it's current configuration and write to a new log 
file. (server)

However, Twisted has its own mechanism of handling log rotation.


More information about the Twisted-Python mailing list