Grasso, M. - SPLXM wrote:
Hi All,
Thanks very much to everyone for replies to my inquiry about using a
Linux VM on z/VM to replace or in lieu of particular CMS-based z/VM
service machines.
In general the reaction from everyone, including locally, was that is
was a good idea with a lot of promise, but, and as reported from this
mailing list, because CMS is efficient for what it does, it is hard to
justify on a cost savings basis.
This was also the reaction from my local management so I will not be
pursuing this project at the moment. On the other hand, I now have a
Linux VM installed [Debian] that is mostly "out of sight" and can be
used to try out different things.
I also tried to promote the idea of thinking of Linux on z/VM as a z/VM
feature. By that I mean that rather than looking at Linux as a
full-blown OS [on z/VM] it might be better to view it as a "commodity
OS" environment/toolkit that brings various tools, etc. into the scope
of z/VM. For example, if there was a situation on z/VM that would
benefit from using a language like python in particular, I could see
setting up a Linux VM to supply the environment where python could be
used.
Sorry for the trivial example but I believe this emphasizes the flexible
strength of Linux. Putting Linux together with z/VM takes that
flexibility, I think, to a whole new level.
I am convinced that now that Linux is "out in the wild" and seeping into
IBM mainframe environment [despite entrenched resistance] it will be
used for exactly these kind of purposes along with its more typical
open-server uses.
I am still happy to hear of people's experiences and innovations along
these lines.
An advantage to management tools on Linux is their portability. One
could write a set of tools to run on Linux, and control other systems
maybe running other operating systems. Whether those tools run on a Zed,
on a Power-full box, a SunBox or your average peecee doesn't matter, all
that's needed is a connexion to the system being managed.
However, given that most shops with Zed are also running VM and have a
bunch of people already pretty handy with REXX and the CMS tools, it's
not an easy row to hoe.
As for running Python programs on Zeds, you can of course, but watch the
CPU usage and be open to the possibility they might be better homed on
peecees or something.
--
Cheers
John
-- spambait
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