Bob Proulx wrote:
Tim Kelley wrote:
I'm a server admin for a living, for the last 25 years, I mean data centers
and lately, cloud. There a very few conditions that would make me
dist-upgrade a server, that is absolutely primitive. Servers are created
from scratch in minutes at will from an SCMS or automated install and if
not, you are wrong!
So a client comes to you as a professional admin. Let's say they have
an aging Squeeze LTS based web server. They want to move to Jessie
which you may have heard is recently released. Would you re-install
their system to Jessie and ask them to reinstall their web site from
scratch? Or would you spend twenty minutes upgrading from Squeeze 6
to Wheezy 7 and then from Wheezy 7 to Jessie 8?
I know what I would do. I would upgrade. (After ensuring a proper
backup. Backups are needed regardless.) Debian is all about being
able to upgrade.
I know what I would do with our servers:
- for our virtualization environment (Xen) - I'd reinstall from scratch
- for our VMs - I'd rebuild each one from scratch
In my experience, lots of glitches accumulate from upgrade to upgrade.
Better to take the opportunity to build a clean system.
I might add that this is particularly the case with Jessie - in that
systemd changes so many things that I wouldn't trust an automated
process in any way, shape, manner, or form. (Of course, I'm REALLY
conservative - I'm just getting ready to upgrade some systems to
Wheezy. From there, I'm seriously considering a migration to BSD.)
Miles Fidelman
--
In theory, there is no difference between theory and practice.
In practice, there is. .... Yogi Berra
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