----------------------------------------------------------------
BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
WHEN YOU POST, include all relevant version numbers, log files,
and configuration files. Don't make us guess your problem!!!
----------------------------------------------------------------
As Tom Cruise once said...."Sometimes you've got to say What the heck"
Live a little...
Where are the tissues?
> Even if it does work, on a server under heavy load, there will be times
> between when you start the copy, and then clear the file that other
> stuff is written to the file that never makes it through because it
> just got overwritten by the cat /dev/null .....
It's better than Jserv going down for 100ms.....or patching the code.
But seriously....if it's a real prob...then lock the file for writing prior
to copy and cat, and release on completion. Perl/C/J etc can do it.
-----------------------------------------------------
Click here for Free Video!!
http://www.gohip.com/free_video/
----- Original Message -----
From: Chris Cheshire <[EMAIL PROTECTED]>
To: Java Apache Users <[EMAIL PROTECTED]>
Sent: Wednesday, July 19, 2000 6:11 PM
Subject: Re: Fwd: Re: rolling the log files
> ----------------------------------------------------------------
> BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> WHEN YOU POST, include all relevant version numbers, log files,
> and configuration files. Don't make us guess your problem!!!
> ----------------------------------------------------------------
>
> Even if it does work, on a server under heavy load, there will be times
> between when you start the copy, and then clear the file that other
> stuff
> is written to the file that never makes it through because it
> just got overwritten by the cat /dev/null .....
>
> Chris Roberts wrote:
> >
> > ----------------------------------------------------------------
> > BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> > WHEN YOU POST, include all relevant version numbers, log files,
> > and configuration files. Don't make us guess your problem!!!
> > ----------------------------------------------------------------
> >
> > Script Process:
> >
> > 1. cp file to new archive file
> > 2. cat /dev/null > file - clears the file.
> >
> > No need to restart server - no fuss.
> >
> > Never done it myself...but 'ave a go mate.
> >
> > PS: maybe unix only soln.
> >
> > >From: Sean Peck <[EMAIL PROTECTED]>
> > >Reply-To: "Java Apache Users" <[EMAIL PROTECTED]>
> > >To: Java Apache Users <[EMAIL PROTECTED]>
> > >Subject: Re: rolling the log files
> > >Date: Wed, 19 Jul 2000 11:07:40 -0400
> > >
> > >----------------------------------------------------------------
> > >BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> > >WHEN YOU POST, include all relevant version numbers, log files,
> > >and configuration files. Don't make us guess your problem!!!
> > >----------------------------------------------------------------
> > >
> > >Actually NO program likes this, the progam when started has the file
> > >descriptor to
> > >its log file. If that file is destroyed, the descriptor still exists
> > >inside the
> > >program and it will continue to write to that file (It doesn't care
what
> > >the name is)
> > >If you rename the file (mv) it will write to the renamed, because at
the OS
> > >level it
> > >is still the same file.
> > >
> > >If you want to rotate the logs, without restarting the server must
somehow
> > >know that
> > >it should stop writing to the descriptor it has, and open a new one.
This
> > >can be done
> > >in numberous ways, the source code of the logging system can be set up
to
> > >rotate
> > >automatically when the log file gets too big, it can be set up to do it
at
> > >a certain
> > >time/day, it can be programmed to do it on a SIGNAL or it could execute
the
> > >log roll
> > >by some other triggering event.
> > >
> > >If you don't want to muck with the source code, but want to auto
rotate,
> > >you should
> > >write a wrapper script that stops the server, moves the log and then
starts
> > >the server
> > >again. It is not an elegant approach, but it will work. And make this
> > >script a cron
> > >job. If the server serializes session info on shutdown and reads it in
on
> > >startup,
> > >(Don't know if Jserv does this) it would be relatively invisible to the
> > >user, except
> > >for the unable to connects that would happen during the time the server
was
> > >restarting.
> > >
> > >
> > > Just some thoughts.
> > >
> > > Sean
> > >
> > >
> > >
> > > > ----------------------------------------------------------------
> > > > BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> > > > WHEN YOU POST, include all relevant version numbers, log files,
> > > > and configuration files. Don't make us guess your problem!!!
> > > > ----------------------------------------------------------------
> > > >
> > > > I think the point was that JServ doesn't like you taking the
> > > > logfile out from under it. It won't reopen() the log file
> > > > and start again once you rotate without restarting it.
> > > >
> > > > JWR
> > > >
> > > > On Tue, Jul 18, 2000 at 04:48:38PM -0700, Michael Amster said:
> > > > --> ----------------------------------------------------------------
> > > > --> BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> > > > --> WHEN YOU POST, include all relevant version numbers, log files,
> > > > --> and configuration files. Don't make us guess your problem!!!
> > > > --> ----------------------------------------------------------------
> > > > -->
> > > > --> Warning- minimal JServ content below...
> > > > -->
> > > > --> If you are on a RedHat linux system, you can use the logrotate
> > >facility - this
> > > > --> provides an easy way to get what you need with minimal coding
and
> > >interruption
> > > > --> to the running site. There are also a good set of log
management
> > >tools
> > > > --> available from Dan Bernstein (of qmail fame):
> > >http://cr.yp.to/daemontools.html
> > > > -->
> > > > --> -MA
> > > > -->
> > > > --> Jon Stevens wrote:
> > > > -->
> > > > -->
> ----------------------------------------------------------------
> > > > --> > BEFORE YOU POST, search the faq at
<http://java.apache.org/faq/>
> > > > --> > WHEN YOU POST, include all relevant version numbers, log
files,
> > > > --> > and configuration files. Don't make us guess your problem!!!
> > > > -->
> ----------------------------------------------------------------
> > > > --> >
> > > > --> > on 7/18/2000 2:09 PM, "Chris Cheshire"
<[EMAIL PROTECTED]>
> > >wrote:
> > > > --> >
> > > > --> > > Is there any way to use cronolog (or something similar) to
> > >automate the
> > > > --> > > rolling of the jserv.log and mod_jserv.log files? I really
don't
> > >want to
> > > > --> > > implement something that stops the web server just to rename
the
> > >files.
> > > > --> >
> > > > --> > You have the source code to JServ, implement this feature.
> > > > --> >
> > > > --> > -jon
> > > > --> >
> > > > --> > --
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> --
> Chris Cheshire
> Manager of Software Development
> bigredwire.com
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> Real Programmers don't draw flowcharts.
> Flowcharts are the illiterate's form of
> documentation. Cavemen drew flowcharts;
> look at how much good it did for them
>
>
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