Date: Fri, 28 Dec 2018 11:55:57 -0500 From: "James B. Byrne" <byrnejb@harte-lyne.ca> To: freebsd-questions@freebsd.org Subject: Re: /etc/resolv.conf overwritten by what? Message-ID: <0e5fda84f78303a95dc5bd177a45bb7e.squirrel@webmail.harte-lyne.ca> In-Reply-To: <20181228103934.1e3dd752@yandex.com> References: <961dc39c14de8d519801ca9fe3b2cdd9.squirrel@webmail.harte-lyne.ca> <20181228103934.1e3dd752@yandex.com>
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On Fri, December 28, 2018 10:33, Ruben wrote:
> Hi,
>
> Did you look in the other crontab places
>
> - /etc/crontab
> - /etc/crontab.d/*
> - /var/cron/tabs/ (for the non-root users but perhaps with sudo
> breakouts)
>
> There should be a lot of default cronjobs running from /etc/crontab at
> least. Perhaps a recently installed piece of software placed an
> additional job in one of those locations?
>
# ll /var/cron/tabs /etc/crontab /etc/cron.d /usr/local/etc/cron.d
ls: /usr/local/etc/cron.d: No such file or directory
-rw-r--r-- 1 root wheel 730 Oct 24 12:42 /etc/crontab
/etc/cron.d:
total 0
/var/cron/tabs:
total 0
# cat /etc/crontab
# /etc/crontab - root's crontab for FreeBSD
#
# $FreeBSD: releng/11.2/etc/crontab 194170 2009-06-14 06:37:19Z brian $
#
SHELL=/bin/sh
PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin
#
#minute hour mday month wday who command
#
*/5 * * * * root /usr/libexec/atrun
#
# Save some entropy so that /dev/random can re-seed on boot.
*/11 * * * * operator /usr/libexec/save-entropy
#
# Rotate log files every hour, if necessary.
0 * * * * root newsyslog
#
# Perform daily/weekly/monthly maintenance.
1 3 * * * root periodic daily
15 4 * * 6 root periodic weekly
30 5 1 * * root periodic monthly
#
# Adjust the time zone if the CMOS clock keeps local time, as opposed to
# UTC time. See adjkerntz(8) for details.
1,31 0-5 * * * root adjkerntz -a
#EOF
The only custom pkg periodic script is
/usr/local/etc/periodic/daily/111.clean-squirrelmail and that is
disabled.
On Fri, December 28, 2018 10:39, starikarp@yandex.com wrote:
>
> I have in /etc/ file dhclient-enter-hooks which has:
> add_new_resolv_conf() {
> # We don't want /etc/resolv.conf changed
> # So this is an empty function
> return 0
> }
>
> and I do not have problems.
>
dhcp is not enabled on this host. All addresses are static.
This happened at precisely 09:12:51 which does not seem to me to be a
'cron'ish time.
# stat resolv.conf*
2838222034 189421 -rw-r--r-- 1 root wheel 4294967295 46 "Jul 11
12:05:07 2018" "Dec 28 09:12:51 2018" "Dec 28 09:35:54 2018" "Jul 11
12:05:07 2018" 4096 1 0x800 resolv.conf_empty_problem
I am baffled by this and there seems to have been no other activity on
that host at that time.
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