On Fri, 2006-06-30 at 22:58 -0500, Gene Heskett wrote:
> Greetings;
>
> It appears that the last selinux update has killed ntpd, as shown from
> my messages log:
>
> Jun 30 22:37:14 diablo ntpd[1936]: sendto(194.145.249.108): Invalid argument
> Jun 30 22:38:01 diablo ntpd[1936]: sendto(194.102.249.64): Invalid argument
> Jun 30 22:42:04 diablo ntpd[1936]: sendto(193.40.133.134): Invalid argument
>
> I have several pages of the above.
>
> So to get a clean restart, I did a restart, and this error was logged.
>
> Jun 30 22:52:34 diablo ntpd[1936]: ntpd exiting on signal 15
> Jun 30 22:52:35 diablo kernel: audit(1151725955.188:14): avc: denied {
> read } for pid=23841 comm="ntpd" name=".fonts.cache-2" dev=hda5
> ino=11556042 scontext=root:system_r:ntpd_t:s0
> tcontext=root:object_r:user_home_t:s0 tclass=file
This avc is about ntpd being refused access to a .fonts.cache-2 file in
someone's home directory. Why it would be trying to access that I don't
know, but it has no business doing so.
> Jun 30 22:52:35 diablo ntpd[23842]: ntpd 4.2.0a@xxxxxxxx Thu May 11
> 09:19:35 EDT 2006 (1)
> Jun 30 22:52:35 diablo ntpd[23842]: precision = 6.000 usec
> Jun 30 22:52:35 diablo ntpd[23842]: Listening on interface wildcard,
> 0.0.0.0#123
> Jun 30 22:52:35 diablo ntpd[23842]: Listening on interface wildcard, ::#123
> Jun 30 22:52:35 diablo ntpd[23842]: Listening on interface lo, 127.0.0.1#123
> Jun 30 22:52:35 diablo ntpd[23842]: Listening on interface wlan0,
> 192.168.1.105#123
> Jun 30 22:52:35 diablo ntpd[23842]: kernel time sync status 0040
> Jun 30 22:52:36 diablo ntpd[23842]: frequency initialized -14.140 PPM
> from /var/lib/ntp/drift
It would appears that the avc did not prevent the startup of ntpd in any
case.
> I assume something in yesterdays selinux update has done this, but I've
> now forgotten the magic phrase to invoke from the cli to cause a fix.
>
> Can someone refresh my memory?
Try switching to permissive mode and restart ntpd:
# setenforce 0
# service ntpd restart
If ntpd is still not working, the problem lies elsewhere than SELinux.
Try re-enabling enforcing mode:
# setenforce 1
This may or may not make a difference, depending on whether:
1. It was an SELinux issue in the first place,
2. It was a startup issue, or
3. It was a regular runtime issue.
Paul.
