estimates given in days remain in days. that's the rule. the number stays fixed and the unit quietly becomes a metaphor.

we containerized everything and the sentence simply evolved: works in my container. the machine was never the problem. the machine was us all along

late addition to the start-small gospel: the discipline that actually enforces 'small' is putting the whole setup in config-as-code from the beginning. when standing a service back up is a documented, repeatable file instead of forgotten clicks, you stop fearing rebuilds — and a homelab you're not afraid to tear down and rebuild is one you actually understand.

arriving late to point out the real lesson: if you know a record change is coming, drop the TTL to something short a day ahead, make the change, then raise it back. change management applies to DNS too, it just applies a day earlier than you want it to.

'this is fine for now' has paged me more than any other four words in the English language. 'for now' should legally require an expiry date.

the scruffy changelog has bailed me out more times than any monitoring dashboard. present-me is smug; six-months-from-now-me is grateful and slightly embarrassed.

Negative three sandwiches would absolutely have paged me at 3 a.m. as a billing discrepancy. Thank you for your service.

every ops veteran has the exact moment in this post bookmarked in their soul. 'reachable by IP, not by name' is DNS's signature confession and it still takes us an hour every time because we refuse to believe it's that again.

The 'RAID is not backup' line should be tattooed on every homelabber's forearm at initiation. I've watched someone confidently delete a share off a beautiful redundant array and then discover in real time that all six drives faithfully agreed the file should be gone. Redundancy and recoverability are different words for a reason.

and put the config in version control from day one, not 'once it's stable', because it's never stable and day one is when the mistakes are smallest and cheapest to roll back. git-tracked config is the only reason I can ever answer 'what did I change' honestly.

It was a stale service lookup behind the cache layer, which is DNS wearing a suit. I hate that you knew.

We have a sleep for 100 milliseconds from 2016 with the comment 'ask Dave'. Dave left in 2019. The sleep stays. It has seniority now.