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0 · Getting Started for Ops

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Why ops is not dev, the one rule of the course, and a real 502 incident traced to the PHP-FPM pool.

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1. What is the one rule that runs through the whole course?
Investigate freely, change with approval Never let Claude read production logs Only run Claude against staging Change freely, investigate afterwards
2. A hook stops a kubectl command aimed at production. What does it use to block it?
Exit code 2 Exit code 0 A deny rule in settings.json A sentence in CLAUDE.md
3. Applied: nginx returns 502 and PHP-FPM logs 'resource temporarily unavailable'. What does the episode look at first?
The pool's max_children against the node's RAM Restarting MySQL Flushing Redis Raising Varnish's malloc size