On Thursday, 28 February 2019 12:41:57 AM PST Bill Broadley wrote:
> * avoid installing/fixing things with vi/apt-get/dpkg/yum/dnf, use ansible
> whenever possible. Eventually you'll have to reinstall and it's painful
> to manually apply months of changes.
Another approach is to build a RAM disk image that gets booted on each node,
and then you only make changes to that image. That way you know your nodes
are in lockstep.
At ${JOB-2} we used xCAT for that with its "statelite" method (so we could
have some persistent state for things like GPFS config info on an NFS share),
at ${JOB-1} we had an image on Lustre that was updated via some scripts from a
master image that was kept in git, and where I am now we use Ansible to build
boot images for our various systems.
All the best!
Chris
--
Chris Samuel : http://www.csamuel.org/ : Berkeley, CA, USA
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