Re: apt-get: Error: Timeout was reached

[<tomas@tuxteam.de>]

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On Fri, Apr 20, 2018 at 10:20:12PM +0200, Rainer Dorsch wrote:
> Am Freitag, 20. April 2018, 22:13:11 CEST schrieb tomas@tuxteam.de:
> > curl -I http://security.debian.org/debian-security/
> 
> root@master:~/tmp# curl -I http://ftp.de.debian.org/debian/
> HTTP/1.1 200 OK
> Date: Fri, 20 Apr 2018 20:19:14 GMT
> Server: Apache/2.4.10 (Debian)
> Content-Type: text/html;charset=UTF-8
> 
> root@master:~/tmp# curl -I http://security.debian.org/debian-security/
> HTTP/1.1 200 OK

[...]

Yeah, that succeeded *once*, but you suggested that your problem
is intermittent.

Either your network connection is sometimes down (you might see
traces of that in your system log) or security.debian.org is
sometimes down (somewhat less probable, since more folks would
complain), or "something" in the path between you two is sometimes
down.

To catch this "sometimes" you'll have to invest a bit more of
work.

I'd start by looking into syslog, around the times your upgrade
complains. Next, you might want to watch connectivity -- there sure
are nice programs out there, with graphing and things, but just
pinging your upstream router every minute might give you a rough
impression, like so:

  ping -i 60 <your upstream router here> > /tmp/connect.log 2>&1 &

and have look at the result after a day or so.

If you're on WiFi, check for bad signal quality or too many nearby
routers (or other sources of noise). If it's Ethernet, flakey cables
or connectors are known for doing nasty things. And so on.

It's a bit like hunting :-)

Cheers
- -- tomás
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