OP needs to install naemon and chill. Monitoring means alerting, and not collecting metrics.
Monitoring means being notified of outages. Metrics are for troubleshooting and post mortems.
If you monitor CPU or RAM usage, you are doing it wrong. Oh and by the way, you want your ram to be full.
PayPal ist doing whatever they want, whenever they want. If your business model relies on Paypal in any way, shape or form, consider your account closed any minute. Been there.
I'd rather patch a bunch of openssh servers than a bunch of proprietary software agents that essentially keep reverse ssh tunnels open for me. Or did I miss something?
If you monitor CPU or RAM usage, you are doing it wrong. Oh and by the way, you want your ram to be full.