It would be nice if we could optionally add a short arbitrary text note to DNS records explaining what the record is used for.

My particular use case: I moved my bugtracker to a new hostname a while back and yesterday almost removed the old CNAME before remembering that it's also used in some of my Subversion repository URLs. Oops.

Thanks!

It's called keeping a Server Journal - look into it.

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Either provide enough details for people to help, or sit back and listen to the crickets chirp.
Security thru obscurity is a myth - and really really annoying.

And if you're wondering, yes, server journals must use Hello Kitty notebooks. It's required, they're not considered authoritative otherwise.

You don't really need to store these on paper. I went high tech and stored mine on a laptop years ago.

Just in case you want to stay low-tech I'll get you started.