CentOS - Feb 2016 - CentOS install disable USB keyboard on Acer AXC 603G UW13

>-----Original Message-----
>From: John Hodrien <J.H.Hodrien at leeds.ac.uk>
>To: CentOS mailing list <centos at centos.org>
>Sent: Tue, Feb 23, 2016 12:06 pm
>Subject: Re: [CentOS] CentOS install disable USB keyboard on Acer AXC 603G
UW13
>
>On Tue, 23 Feb 2016, Juan De Mola wrote:
>
>> CentOS 6 has problems printing when the Internet goes down. And 7 is
still
>> untested for the software we are running on Linux.
>
>Not being funny, but where did you get that idea from?
>
>jh
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>CentOS mailing list
>CentOS at centos.org
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I have upgraded a client's main server, everything worked well until the
Internet got an outage. Printers stoped working without explanation. I have not
tested 7, but 6 is off table because of that incident.

Juan De Mola wrote:
>>From: John Hodrien <J.H.Hodrien at leeds.ac.uk>
>>On Tue, 23 Feb 2016, Juan De Mola wrote:
>>
>>> CentOS 6 has problems printing when the Internet goes down. And 7
is
>>> still untested for the software we are running on Linux.
>>
>>Not being funny, but where did you get that idea from?
>
> I have upgraded a client's main server, everything worked well until
the
> Internet got an outage. Printers stoped working without explanation. I
> have not tested 7, but 6 is off table because of that incident.
That's very odd. We have well over 170 servers and workstations, the vast
majority on CentOS 6, as is my own workstation at home, and both here at
work, and at home, we/I have occasionally had connection to the outside
world issue (admittedly, not for very long), and no printer problems at
all.

      mark

> Date: Tuesday, February 23, 2016 11:13:32 -0500
> From: m.roth at 5-cent.us
>
> Juan De Mola wrote:
>>> From: John Hodrien <J.H.Hodrien at leeds.ac.uk>
>>> On Tue, 23 Feb 2016, Juan De Mola wrote:
>>> 
>>>> CentOS 6 has problems printing when the Internet goes down. And
>>>> 7 is still untested for the software we are running on Linux.
>>> 
>>> Not being funny, but where did you get that idea from?
>> 
>> I have upgraded a client's main server, everything worked well
>> until the Internet got an outage. Printers stoped working without
>> explanation. I have not tested 7, but 6 is off table because of
>> that incident.
> 
> That's very odd. We have well over 170 servers and workstations,
> the vast majority on CentOS 6, as is my own workstation at home,
> and both here at work, and at home, we/I have occasionally had
> connection to the outside world issue (admittedly, not for very
> long), and no printer problems at all.
> 
>       mark
The printing problem sounds like a configuration issue. Without
knowing more, it seems likely DNS (or more generally, hostname
lookup) related.

On Tue, February 23, 2016 10:13 am, m.roth at 5-cent.us
wrote:
> Juan De Mola wrote:
>>>From: John Hodrien <J.H.Hodrien at leeds.ac.uk>
>>>On Tue, 23 Feb 2016, Juan De Mola wrote:
>>>
>>>> CentOS 6 has problems printing when the Internet goes down. And
7 is
>>>> still untested for the software we are running on Linux.
>>>
>>>Not being funny, but where did you get that idea from?
>>
>> I have upgraded a client's main server, everything worked well
until the
>> Internet got an outage. Printers stoped working without explanation. I
>> have not tested 7, but 6 is off table because of that incident.
>
> That's very odd. We have well over 170 servers and workstations, the
vast
> majority on CentOS 6, as is my own workstation at home, and both here at
> work, and at home, we/I have occasionally had connection to the outside
> world issue (admittedly, not for very long), and no printer problems at
> all.
Mark, it may depend on how he set up printing. If it is CUPS and it can
not connect to LPD or IPP downstream, then that particular queue will be
stopped. So, one may need to restart queues after networks outage. The
most robust way I know is to have CUPS connect jetdirect (9100). No matter
whether there is outage or not, the queue is not stopped... So, it well
could be for him to go carefully through configuration in the first place,
and figure out what in particular happens due to network outage. Requires
some actual sysadmin work ;-)

Valeri

++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
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