Re: ntp audit spew.
On Mon, Sep 23, 2019 at 12:14:14PM -0400, Paul Moore wrote:
On Mon, Sep 23, 2019 at 11:50 AM Dave Jones
<davej(a)codemonkey.org.uk> wrote:
>
> I have some hosts that are constantly spewing audit messages like so:
>
> [46897.591182] audit: type=1333 audit(1569250288.663:220): op=offset
old=2543677901372 new=2980866217213
> [46897.591184] audit: type=1333 audit(1569250288.663:221): op=freq
old=-2443166611284 new=-2436281764244
> [48850.604005] audit: type=1333 audit(1569252241.675:222): op=offset
old=1850302393317 new=3190241577926
> [48850.604008] audit: type=1333 audit(1569252241.675:223): op=freq
old=-2436281764244 new=-2413071187316
> [49926.567270] audit: type=1333 audit(1569253317.638:224): op=offset
old=2453141035832 new=2372389610455
> [49926.567273] audit: type=1333 audit(1569253317.638:225): op=freq
old=-2413071187316 new=-2403561671476
>
> This gets emitted every time ntp makes an adjustment, which is apparently very
frequent on some hosts.
>
>
> Audit isn't even enabled on these machines.
>
> # auditctl -l
> No rules
What happens when you run 'auditctl -a never,task'? That *should*
silence those messages as the audit_ntp_log() function has the
requisite audit_dummy_context() check.
They still get emitted.
FWIW, this is the distro
default for many (most? all?) distros; for example, check
/etc/audit/audit.rules on a stock Fedora system.
As these machines aren't using audit, they aren't running auditd either.
Essentially: nothing enables audit, but the kernel side continues to log
ntp regardless (no other audit messages seem to do this).
Dave