[LON-CAPA-admin] unable to contact DNS

[Bob Gonzales]

Stuart,

Thanks for the quick reply.

I had to put the old loncapa5 back on-line since students were logging into
it directly and not going through our lon-balancer which had been
configured to not use loncapa5 as a spare.

So, I won't be able to follow up on this for a couple of weeks until after
the students are done.

One related question, ca-certificates are not installed, they aren't
installed on any of the servers in my domain, is this extra manual
installation going to be required for all the servers when I update them
over the Christmas break?

Thanks,
Bob Gonzales

On Tue, Nov 18, 2014 at 10:52 AM, Stuart Raeburn <raeburn at msu.edu> wrote:

> Hi Bob,
>
>  Tue Nov 18 09:49:29 2014 (16563): unable to contact DNS defaulting to on
>> disk file dns_domain.tab
>>
>
> I would recommend confirming that the ca-certificates package is installed.
>
> yum info ca-certificates
>
> and, if not, install it:
>
> yum install ca-certificates
>
> I would also recommend testing web requests to https://s10.lite.msu.edu/
> by using: openssl s_client -connect s10.lite.msu.edu:443 -state
>
> I am seeing some requests for http://s10.lite.msu.edu/adm/dns/domain from
> 128.226.130.232 in the access_log
>
> 128.226.130.232 - - [18/Nov/2014:09:49:28 -0500] "GET /adm/dns/domain
> HTTP/1.1" 302 305
>
> but I am not seeing the subsequent request for
> https://s10.lite.msu.edu/adm/dns/domain in the ssl_access_log.
>
> You could also try:
>
> wget https://s10.lite.msu.edu/adm/dns/domain
>
> and see what is reported by wget.
>
>
> Stuart Raeburn
> LON-CAPA Academic Consortium
>
>
> Quoting Bob Gonzales <rgonzal at binghamton.edu>:
>
>  Hi,
>>
>> I put my centos 7, loncapa 2.11 machine on line and I am seeing the
>> following entries intersperse throughout my lonnet.log:
>>
>> Tue Nov 18 09:49:29 2014 (16563): unable to contact DNS defaulting to on
>> disk file dns_domain.tab
>>
>> I can log on but it's a little slow entering a course.  I don't know
>> whether that's due to DNS or just building cache's.
>>
>> This is a hardware upgrade of an existing access server,
>> loncapa5.chem.binghamton.edu.
>>
>> Any help would be appreciated.
>>
>> Thanks,
>> Bob Gonzales
>> Chemistry Dept
>> Binghamton University
>>
>
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