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Groups > linux.debian.bugs.dist > #1018007

Bug#964438: apt-listbugs: dns error when running from cron job

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On Tue, 14 Jul 2020 10:36:23 +0200 Oswald Buddenhagen wrote:

> On Mon, Jul 13, 2020 at 11:25:21PM +0200, Francesco Poli wrote:
> >I haven't found a satisfying strategy to get what I wanted.
> >
> ok, fair enough. please make sure the maintainers know about this 
> requirement if you haven't done so yet.

That's a sensible suggestion: unfortunately, I haven't yet got around
to it.
But I would love to see the mechanism more implemented on the systemd
side, and less on the script side...

> 
> >Could it be that the timer was just about to be triggered, when the
> >machine woke up?
> >
> that's implausible, because the suspensions and wakeups are essentially 
> random (measured against "your" schedule), while the problem appears 
> with utter regularity (whenever the wakeup happens on the next day, as 
> defined by your mechanism).

Do you mean that your "no network when apt-listbugs timer runs" only
happens immediately after a wake-up from a suspended state and only
when the system has had no chance to run the timer between 7:00 a.m.
and the wake-up itself?

If this is the case, then I apologize for not understanding before!

Since I do not use any suspend mechanism on my boxes, this could well
explain why I do not experience the same issue...

[...]
> here's a log of the wakeup:
> 
[...]
> Jul 14 09:53:46 ugly systemd-sleep[789697]: System resumed.
> Jul 14 09:53:46 ugly kernel: Restarting tasks ... done.
> Jul 14 09:53:46 ugly kernel: PM: suspend exit
> Jul 14 09:53:46 ugly systemd[1]: Starting Daily apt upgrade and clean activities...
> Jul 14 09:53:46 ugly systemd[1]: Starting Daily apt-listbugs preferences cleanup...
[...]
> Jul 14 09:53:47 ugly systemd[1]: apt-listbugs.service: Succeeded.
> Jul 14 09:53:47 ugly systemd[1]: Finished Daily apt-listbugs preferences cleanup.
> Jul 14 09:53:50 ugly kernel: e1000e 0000:00:19.0 eth0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[...]
> Jul 14 09:53:51 ugly dhclient[1005]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
> Jul 14 09:53:51 ugly dhclient[1005]: DHCPOFFER of 192.168.178.20 from 192.168.178.1
> Jul 14 09:53:51 ugly dhclient[1005]: DHCPREQUEST for 192.168.178.20 on eth0 to 255.255.255.255 port 67
> Jul 14 09:53:51 ugly dhclient[1005]: DHCPACK of 192.168.178.20 from 192.168.178.1
[...]

Well, it really looks like the apt-listbugs timer is run before the
network is brought up again.

> 
> today's fail-mail is dated '14 Jul 2020 09:53:47 +0200'.

And I suppose /var/spool/apt-listbugs/lastprefclean modification time
is somewhat later, between 10:20 and 10:40 a.m.

> 
> >If you do not reply to my questions, I will not be able to investigate
> >and I will have no other choice than closing this bug report as
> >unreproducible...
> >
> i think i'm quite capable of judging what's relevant in cases like this, 
> so don't make it too easy for yourself to dismiss the issue. ;)

No offense was intended: I was just saying that replying to questions
may (sometimes) help in understanding the issue and in investigating
the cause...


-- 
 http://www.inventati.org/frx/
 There's not a second to spare! To the laboratory!
..................................................... Francesco Poli .
 GnuPG key fpr == CA01 1147 9CD2 EFDF FB82  3925 3E1C 27E1 1F69 BFFE

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Bug#964438: apt-listbugs: dns error when running from cron job Oswald Buddenhagen <oswald.buddenhagen@gmx.de> - 2020-07-07 11:50 +0200
  Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-07 20:00 +0200
    Bug#964438: apt-listbugs: dns error when running from cron job Oswald Buddenhagen <oswald.buddenhagen@gmx.de> - 2020-07-07 20:30 +0200
      Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-07 23:00 +0200
        Bug#964438: apt-listbugs: dns error when running from cron job Oswald Buddenhagen <oswald.buddenhagen@gmx.de> - 2020-07-07 23:10 +0200
          Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-13 23:40 +0200
            Bug#964438: apt-listbugs: dns error when running from cron job Oswald Buddenhagen <oswald.buddenhagen@gmx.de> - 2020-07-14 10:40 +0200
              Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-14 23:00 +0200
                Bug#964438: apt-listbugs: dns error when running from cron job Oswald Buddenhagen <oswald.buddenhagen@gmx.de> - 2020-07-15 11:00 +0200
                Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-16 23:20 +0200
                Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-16 23:50 +0200
  Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-17 18:20 +0200
    Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-26 21:40 +0200
  Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-26 22:50 +0200
  Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-26 22:50 +0200
    Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-26 23:30 +0200
  Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-26 23:30 +0200
  Bug#964438: apt-listbugs: dns error when running from cron job Francesco Poli <invernomuto@paranoici.org> - 2020-07-27 23:40 +0200

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