----- Original Message -----
> Sigbjorn Lie wrote:
> > On 09/20/2012 10:17 PM, Rob Crittenden wrote:
> >> bind isn't my strongest suite.
> >>
> >> My guess is that this file is the ccache for bind. I'm guessing
> >> that
> >> 25 is the UID of the named user. If this is the case, then it
> >> should
> >> be safe to stop named, rename the file, and restart. Perhaps the
> >> contexts have changed so when this gets re-created it will get
> >> fixed
> >> automagically.
> >>
> >> rob
> >>
> > You guessed well!! :)
> >
> > Stop named:
> > # service named stop
> >
> > Enable selinux:
> > # setenforce 1
> >
> > Verify that error still exists:
> > # service named start
> > Starting named:                                            [FAILED]
> >
> > Rename file:
> > # cd /var/tmp
> > # mv DNS_25 DNS_25_old
> >
> > Attempt to start named again:
> > # service named start
> > Starting named:                                            [  OK  ]
> >
> > Voila!
> >
> > A before and after shot:
> > # ls -lZ DNS_25*
> > -rw-------. named named unconfined_u:object_r:named_tmp_t:s0 DNS_25
> > -rw-------. named named system_u:object_r:tmp_t:s0       DNS_25_old
> >
> > What's the odds that this was the entire issue and that named will
> > now
> > keep running safe and sound?
> >
> 
> Hard to say. Because restorecon didn't fix the bad context I suspect
> this isn't directly covered in policy. So if the file should get the
> wrong context again you could be back in this position. It is
> probably
> worth filing a bug. I'm not entirely sure whether it should be
> against
> bind or selinux, but it'll get to the right folks either way
> eventually.

That file is the reply-cache, and it's context is set at runtime by the
krb5 library. It did get out of sync because selinux was disabled, and
restorecon, can't fix the label because the file is in a tmp directory,
so it just takes the tmp_t context by default.

If selinux is not completely disable this shouldn't happen anymore, however,
should it happen you can simply remove the file, it is not vital and will
get recreated after you restart named.

Simo.

-- 
Simo Sorce * Red Hat, Inc. * New York

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