What is the current recommended configuration regarding NetworkManager
for diskless compute nodes (CentOS 7.3/7.4)?

We are upgrading xCAT with a large jump (from 2.8 to 2.13.8) and
running into issues with our compute images losing IP address after 12
hours (dhclient is not running).  The Release Notes for 2.13 show
Issue 1972 as being resolved, but this sounds like the problem we are
seeing.

<https://github.com/xcat2/xcat-core/issues/1972> has a long set of
comments and some of the referenced patches seem to be applied.
<https://github.com/xcat2/xcat-core/issues/1972#issuecomment-254120700>
references a fix <https://github.com/xcat2/xcat-core/pull/1977/files>
which adds NetworkManager to the compute image.  This change seems to
address our problem, but does not seem to have made it into mainline
xCAT.

In general, I would prefer to not have NetworkManager running, but
that is mostly a historical bias.  NetworkManager does bring in a few
unneeded modules (ppp and wireless support in particular), but I can
live with it if necessary.

We are not explicitly running hardeths, configeth or anything similar.

Is NetworkManager required?  Or should I remove it and search for some
other cause of the problem?

Thanks for any suggestions,
Stuart Barkley
-- 
I've never been lost; I was once bewildered for three days, but never lost!
                                        --  Daniel Boone

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