At 20:25 -0500 9/23/02, Paul DuBois wrote:
>At 16:43 -0700 9/23/02, Jan Steinman wrote:
>> >From: "Moestl, Wolfgang" <Wolfgang.Moestl@stripped>
>>>
>>>Is there a defined behaviour for handling the case-sensitivety for
>>>user- and hostnames?
>>
>>According to the specification for the Domain Name System (DNS),
>>Internet hostnames are always supposed to be case-insensitive.
>>
>>Since other entities in MySQL are case-sensitive, this may seem
>>inconsistent, but it is imposed by international standards. It is
>>NOT under the control of MySQL.
>>
>>>To get it even more confusing, the values for user and host at the
>>>SHOW GRANTS FOR [user]@[host] are BOTH FULLY case-sensitive.
>>
>>If verified, this is a bug. DNS-based hostnames should NEVER be
>>case-sensitive.
>
>MySQL behaves like this:
>
>Usernames, passwords, and database and table names are case sensitive in
>grant table entries.
>
>Hostnames and column names are not.
>
>>
>>The fact that you observed this using the "magic" hostname
>>"localhost" may indicate that MySQL is "cheating" by doing its own
>>management of this unique name. Any other fully qualified domain
>>name should go through your operating system's address resolver,
>>and had better be case-insensitive!
>
>"localhost" is indeed interpreted specially in MySQL. On UNIX, it means
>"connect using the UNIX domain socket rather than TCP/IP". So in this
>case, DNS is not involved.
>
>In any case, I do not observe a difference between setting up
>user accounts using host 'localhost' versus 'LOCALHOST'.
>
>I *do* observe case sensitive hostname behavior for SHOW GRANTS.
>This should not be. I'll ask about it.
Okay, there was indeed a case comparison problem with SHOW GRANTS.
This has now been fixed for the upcoming 4.0.4 release.
>
>>
>>On UNIX and clones: "nslookup localhost" "nslookup Localhost" and
>>"nslookup LoCaLhOsT" all answer the same IP.
>>
>>If case-insensitivity with "localhost" is important, you might just
>>map some other name to your machine and use that instead. This is
>>also a good policy in case you later want to move your database to
>>its own machine. For example, I have "data" defined as a CNAME in
>>DNS for the machine I'd normally refer to as "localhost." It seems
>>to work -- as it should -- if I call it "data", "Data", "dATA", etc.
>>
>>--
>>: Jan Steinman -- nature photography: <http://www.Bytesmiths.com>
>>: Bytesmiths -- artists' services: <http://www.Bytesmiths.com/Services>
>>: Join the forums at <http://www.Bytesmiths.com/wiki>
