First day of production operation. Apache MaxRequestWorkers and PHP-FPM pool sizes were under-provisioned for live traffic, causing request queuing and intermittent 502 errors during the first hours. Configuration was tuned live.
08:00 UTC
Server goes live. First customer traffic received.
09:15 UTC
Apache worker pool exhausted under concurrent connections. 502 errors observed.
10:00 UTC
MaxRequestWorkers raised, PHP-FPM pool count increased. Services stabilising.
11:40 UTC
Server fully stable. Baseline configuration documented for future scaling.