On Wed, 16 Sep 2015, Andrey Ptashnik wrote:
Dear IPA Team,

We have a situation in our datacenter where we deployed Red Hat 7.1
with IPA server 4.1 and on the other hand we still have older machines
with Red Hat 5 and 6. I noticed that repositories associated with
version 6 have older version of the client software – v.3.0. Therefore
some functionality is missing from client package 3 vs 4, like
automatic update of both forward and reverse DNS records.

Is it possible to install IPA client v. 4 on Red Hat 5 and 6 without
much breaking dependencies in OS?
You don't need to install IPA python packages on older machines. These
packages are mostly for administration purposes.

Automatic update of forward/reverse DNS zones is done by SSSD. RHEL 6
version of SSSD is on par with RHEL 7 version in the recent updates.
Additionally, MIT Kerberos backports were done in the recent updates to
allow OTP functionality in RHEL6 as well. So most of features are there
already, client-wise.

RHEL5 version does not have such updates and you can implement most of
the support with existing SSSD and output of 'ipa-advise' tool on IPA
masters. nsupdate integration would probably need to be done

Backporting IPA v4.x client code to RHEL 5 or 6 in general makes not
much sense.

/ Alexander Bokovoy

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