On 02/03/2015 05:00 AM, David Sommerseth wrote:
> On 03/02/15 00:25, Yasha Karant wrote:
>> On 02/02/2015 11:35 AM, Connie Sieh wrote:
>>> On Fri, 30 Jan 2015, Yasha Karant wrote:
>>>
>>>> On 01/30/2015 10:32 AM, Brett Viren wrote:
>>>>> Yasha Karant <[log in to unmask]> writes:
>>>>>
>>>>>> For example, will a
>>>>>> legally licensed MS Win application that does not run under
>>>>>> Wine/CrossOver work under Docker under SL 7 the same as it would under
>>>>>> VirtualBox with a full install of say MS Win 8.1 (soon MS Win 10)?
>>>>> Docker containers run on Linux (the kernel) so, no, if your application
>>>>> requires honest-to-badness MicroSoft Windows don't plan on using
>>>>> Docker.
>>>>>
>>>>>> Can one make a Docker application package on the target host (e.g., SL
>>>>>> 7) or does one need first a full install of the (virtual) base
>>>>> I don't know what "target" (host? guest?) means here.
>>>> The application, say A, runs under environment (OS) X, not environment
>>>> Y.  One wants A under Y.  The target is Y.  Can one build A under Y
>>>> using the appropriate "chunks"
>>>> from X with Docker, or does one re-build ("dockerise") A under X for
>>>> target Y?  In the first event, one only needs to be running Y; in the
>>>> second event, one needs to be running X to build for Y.
>>>>> A Docker image is a full OS (minus the kernel).  To start you write one
>>>>> line in a Dockerfile like:
>>>>>
>>>>>     FROM fedora:20
>>>>>
>>>>> and do a "docker build"
>>>>>
>>>>> You can follow up this line with additional instructions (such as "yum
>>>>> install ...") to further populate.
>>>>>
>>>>> If you have a second image that shares some portion of these
>>>>> instructions, or as you add more instructions, any prior existing
>>>>> "layer" is reused.
>>>>>
>>>>>
>>>>> I don't find a lot of bases for SL but there are ways to add new base
>>>>> OSes from first principles (CMS has some scripts in github) and there
>>>>> are established ones for centos.
>>>>>
>>>>>
>>>>> -Brett.
>>>> Presumably, any application that will run under CentOS, in particular,
>>>> CentOS 7 that is the RHEL source release for other ports, such as SL 7,
>>>> should be able to run under SL.  My understanding is that SL 7 is not
>>>> built from the actual RHEL 7 source that is used to build RHEL 7 that is
>>>> licensed for fee, but from the RHEL packaged CentOS source (CentOS now
>>>> effectively being a unit of Red Hat, a for-profit corporation) that is
>>>> used to build CentOS 7 (that, as with SL 7, is licensed for free as a
>>>> binary installable executable system that requires no building from
>>>> source per se).
>>>>
>>>> Yasha
>>>>
>>> SL is built from the source that Red Hat has provided .  It is built
>>> from the same source that all rebuilds can build from. There is no
>>> such thing as "RHEL packaged CentOS source" .
>>>
>>> -- 
>>> Connie J. Sieh
>>> Computing Services Specialist III
>>>
>>> Fermi National Accelerator Laboratory
>>> 630 840 8531 office
>>>
>>> http://www.fnal.gov
>>> [log in to unmask]
>>>
>> Please correct me if I am in error.  RHEL, binary licensed for fee,
> No, you are wrong.  You pay for a subscription, which may include
> updates, support and so on, depending on what you sign up for.  You
> don't pay for a license at all, only subscription.  Which is what Red
> Hat calls it all over their site.
>
> <https://www.redhat.com/wapps/store/catalog.html>
>
>> is built from a source that RH does not seem to release.
> <ftp://ftp.redhat.com/pub/redhat/linux/enterprise/7Server/en/os/README>
>
>
> --
> kind regards,
>
> David Sommerseth
>

To be clear, the legal language may be "license for fee", "subscription 
for fee", or "stand on your head for fee".   The operative language is 
"FEE".  The RHEL 7 binary executable and the RPM updates are not 
available from Red Hat (not CentOS, SL, etc.) except to those who pay a 
fee, irrespective of whether or not one wants any "support".  Note that 
SL, in the USA, is a Fermilab project, and thus is ported and/or 
"supported" at public expense under grants and contracts ultimately from 
USA Federal agencies (in addition to whatever private/corporate funding 
may be provided under separate arrangement).  The above are not to be 
regarded as negative or positive comments about the business practices 
of Red Hat that is a for-profit corporation and thus needs profit and 
cash flow models and mechanisms.

Regards,

Yasha Karant