A knighthood is not a peerage. To be an (English) peer one must be a Duke, Marquess, Earl, Viscount or Baron. Obviously a peerage is a much bigger deal than a knighthood.

Correlations don't have a direction. Causality does.

Munin is a very useful monitoring tool that can be configured to warn of server issues (full-ish file systems, high load averages, etc.) You can also easily configure a web view that auto-updates at intervals with pretty graphs. You can monitor whatever you want via trivial shell script plugins.