Mysql hostnames?

In the dreamhost wiki on using mysql it says,


My question is, does anyone know if this requirement is still true? Some time ago, before I read this information, I set up several databases and if memory serves my right (and I am reading my mysql configuration correctly) they are all using the same mysql host . . . . and everything appears to be working.

I’m pretty sure this is no longer true, as I have several databases accessed via the same hostname.

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