[18981] in Kerberos
Re: Kprop Eating Disk Space?
daemon@ATHENA.MIT.EDU (Ken Raeburn)
Fri Mar 28 20:19:59 2003
To: Monica Lau <mllau2002@yahoo.com>
From: Ken Raeburn <raeburn@MIT.EDU>
Date: Fri, 28 Mar 2003 20:19:02 -0500
In-Reply-To: <tx1r88rngk1.fsf@mit.edu> (Ken Raeburn's message of "Fri, 28
Mar 2003 19:48:46 -0500")
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Ken Raeburn <raeburn@MIT.EDU> writes:
> Monica Lau <mllau2002@yahoo.com> writes:
>> I have a master kdc and a slave kdc. In the master kdc, I run a
>> script that executes kprop to propagate the database to the slave
>> every 2 seconds (for testing purposes). On the slave kdc, I run the
>> "df" command periodically. I noticed that the disk space percentage
>> usage climbs up slowly. Eventually, it goes up to 100%, and my
>> slave machine crashes. I don't understand how/why kprop could cause
>> the disk space in the slave machine to go up because the master
>> database is always the same size. If I stop the propagation, the
>> disk space in the slave doesn't go down, until I reboot the machine.
>
> It sounds like unreferenced files being kept around for some reason.
> Try looking for old processes hanging around for some reason (is
> kpropd not exiting properly?), or get the "lsof" tool and use it to
> see what processes might have extra files kept open.
Someone here pointed out the "every 2 seconds" part that I overlooked.
Trying it out like that, I think I've reproduced the problem. I'll
investigate further.
> Roughly, it goes like this on the slave side:
> - kpropd gets a connection
> - data is saved (default: $localstatedir/krb5kdc/slave_datatrans)
Actually, slave_datatrans is on the master side. It's from_master on
the slave.
Ken
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