SSH and the OOM killer

[peterhoeg]

A few comments:

1. the cron example listed doesn't run "every few minues" as mentioned, but every minute
2. -17 is not a valid value for oom_adj. It goes from -16 to 15.
3. the proper way to set this assuming the host uses systemd is via the unit configuration:

[Service]
OOMScoreAdjust = -1000

4. if using systemd, you would then also need to configure ssh to always run rather than be socket activated (the default depends on your distribution)