Bug #55903 Documentation claims hostname variable is settable, but it is not
Submitted: 11 Aug 2010 4:41 Modified: 18 Aug 2010 14:25
Reporter: Trent Lloyd Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Documentation Severity:S3 (Non-critical)
Version: OS:Any
Assigned to: Paul Dubois CPU Architecture:Any

[11 Aug 2010 4:41] Trent Lloyd
Description:
5.0 and 5.1 documentation claims 'hostname' option is valid on the command line and in my.cnf, but it is not.

As best I can see it is hard set and not possible to customize at all.

How to repeat:
100811 12:37:36 [ERROR] ./bin/mysqld: unknown option '--hostname'

Suggested fix:
Correct the documentation to reflect this variable is not modifiable

This seems to apply to 'version' as well
[15 Aug 2010 17:22] Paul Dubois
I don't see where the manual says that hostname can be set on the command line.

http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html#sysvar_hostname says:

"The server sets this variable to the server host name at startup."
[16 Aug 2010 3:12] Trent Lloyd
In the list up the top, it claims Cmd-Line yes, Option file, yes

I also think a specific note should be added you cannot set the variable
[18 Aug 2010 14:25] Paul Dubois
Thank you for your bug report. This issue has been addressed in the documentation. The updated documentation will appear on our website shortly, and will be included in the next release of the relevant products.

The table is fixed now. This problem also affected several of the version_xxx system variables.