Jehad authored 2 years ago and Benoit Donneaux committed 1 year ago

Co-authored-by: Benoit Donneaux <benoit@leastauthority.com>
Signed-off-by: Benoit Donneaux <benoit@leastauthority.com>

On never kernels, a swappiness of 0 means "disable swap completely"
where it would before ~ 2.6.32 would still allow the kernel to swap
in certain emergency situations.

We have alerting in place in case of any swapping, hoping we can react
quickly enough to catch problems of runaway machines before they have
to haywire OOM or reboot.

Command: `rg -l swappiness | xargs sed -i 's/swappiness" = 0/swappiness" = 1/'`
(but not adding the change to the virtual hardware for the local grid).

For consistency reasons: Even if they had a perfectly good swap
partition already, and also for AWS hosts.

Also put library code in a library directory

There will be no staging grid and the other two nodes in this grid went
elsewhere.