[Cialug] Swap @ DO

[L. V. Lammert]

On Mon, 13 Jan 2020, Jonathan A. Kollasch wrote:

> How much swap is actually being used?
>
Alerts are 99% used.

> How often does the alerting mechanism poll the system for thisinformation?
>
Every 15 minuts.

> Is the alerting mechanism external to your running system,or does it
> have components that execute under your control?
>
Yes, a Nagios machine in our DC, running the check remotely via ssh.

> I wouldn't necessarily advise that, but it may be useful for
> testing. Perhaps if there's an event that happens where the swap is
> actually being used it will cause out of memory failures instead of a
> full swap area.
>
Hard to get a handle on exactly what is happening, as it occurs on a very
random basis.

Most likely some script kiddies running password guessing attacks on the
WP sites therin; have fail2ban block any IP that has caused two successive
login failures.

	Thanks!