Operating it

These pages are for the person who runs fpm-tune on a host: installing it as a service, acting on its plan once, alerting on it, and undoing, removing or upgrading it.

• Running as a daemon: the systemd install, the two modes, what a round does, and what it logs.
• Applying once: fpm-tune top and sudo fpm-tune apply-now, for acting on a plan you have read.
• Metrics and alerting: every series on /metrics, the three alerts that matter, /healthz and /history.json.
• Advisory mode: the recommendation file, and the workflow of deciding by hand.
• Recovering a host: what happens, and what to do, when php-fpm will not start.
• Lifecycle: undoing a change, removing it, upgrading, what it costs to run, and resetting the baseline.