Funny, I got the similar results for my mail servers
with anaconda kickstart, pxe, dhcp, tftp and grub save
for certain stuff in /etc. They all run the same
distro base, run the same software packages and
scriipts and don't require someone baby sitting them
during installation or upgrade. Almost fire and
forget.
And you...
...managed tens of thousands of servers with it successfully, in parallel?
...had a platform that spanned operating systems, and was able to run the
same software stacks in the same way, functionality-wise?
...were able to deploy components and bundles, for example Oracle, within
minutes on thousands of servers, without ever having to do any kind of
manual configuration, just have the system start serving data?
...ran the whole kit and kaboodle through a modular, automated testing suite
that found any potential problems and descrepancies?
...never had to log into a system and do any ad-hoc work?
PXE, Anaconda and JumpStart are just parts and pieces of the puzzle.
My point is, in an environment like that, one would *never* run `apt-get` or
`yum update`. That would be ad-hoc. It would take all the stability and
reliability out of that environment.
Pity all the architecture, specification, development and testing that went
into it with the engineering of the platform. It would defeat the whole
purpose in an instant.
I do believe you though when you write that it worked for you. I'm just
curious, how many systems did you maintain, and how many people were
necessary to maintain it?
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