[ProgClub programming] VM won't boot after salt config

Jedd Rashbrooke jedd.rashbrooke at gmail.com
Sun Jun 30 09:06:33 AEST 2019


 It sounds like you haven't completed RCA yet, but contributing factors
appear to be:

 No off-box archives available  to examine /etc/ deltas between points in
time

 No change control - no testing of config changes before, or even after,
pushing them out

 A bit of a misunderstanding about the difference between
GRUB_CMDLINE_LINUX and ~_DEFAULT  (you said you 'changed' the parameter
name, not just the parameter).

 An attachment to running GUIs on virtual machines which *probably* should
be headless.  Slightly related --  most 'grub maybe-ubiquity' searches on
the net reveal this is another way that Ubuntu has annoyed a good number of
its users.  As noted elsewhere, GUIs on VMs that don't need them needlessly
increase attack vector, consume resources, and now, in this case, add an
extra set of components that can break your machine

 It's been 3 months since the last time a grub change (details weren't
specified IIRC) rendered your GUI'd virtual machine unbootable, and
distracted you from something useful while you spent a day hunting down the
problem.

 j.
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