[debian-mysql] Bug#435165: Bug#435165: mysql-server-5.0: Clearly note we don't support multi-instances by duplicating init script

Monty Taylor monty at inaugust.com
Tue Jul 31 05:24:51 UTC 2007

Do we have a place like the launchpad Blueprints where we could start
working up ideas for this? Or should I just file a bug/use this one as a
place to collect thoughts?


sean finney wrote:
> severity 435165 wishlist
> thanks
> hi dan,
> yes, i've actually been talking with on of the "debian guys" within mysql 
> about how this is a fairly common problem in real-world installations for 
> them as well.  not only multiple instances, but multiple versions as well.  
> i'll probably be talking with him more about the details of implementing 
> this, but i'm sure the patch below would be a good first step since we'll 
> have to do this abstraction at some point anyway.
> for a final version, i think we'll probably do something similar to what pitti 
> set up with the postgres packages, but i'm also not familiar enough with that 
> to know all the details of the implementation.
> i'll take a look at the specifics of the patch the next time i'm sitting down 
> with the packaging, and maybe we can use this BR for general discussion about 
> this topic both in the meantime and until we get the full support.
> thanks,
> 	sean
> On Sunday 29 July 2007 09:24:46 pm Dan Munckton wrote:
>> Package: mysql-server-5.0
>> Version: 5.0.45-1
>> Severity: minor
>> This is the result of the bug reported in Ubuntu. Raised here to pass
>> the debdiff upstream to Debian.
>> https://bugs.launchpad.net/ubuntu/+source/mysql-dfsg-5.0/+bug/106244
>> A user reported that they were trying to run multiple instances of
>> mysqld by duplicating the init script and changing the value of the CONF
>> variable within it to point to another configuration file. They raised
>> the bug in Ubuntu because the /etc/mysql/my.cnf is hard coded in a lot
>> of the startup scripts, and prevented them from easily running
>> multi-instances in this way.
>> After some analysis and discussion with mathiaz and infinity from the
>> ubuntu-server team it was agreed that we cannot properly support
>> multi-instances in this way because the maintainer scripts are not
>> designed to deal with this situation and could therefore lead to
>> problems on package upgrade/removal. Instead the proper way to do things
>> would seem to be to use mysqld_multi.
>> A patch has been prepared which clearly comments the CONF variable
>> stating that multi-instances are not supported in this way, and removes
>> some of the hard-coded instances of '/etc/mysql/my.cnf' for the sake of
>> tidyness.
>> (This is my first bug report to the Debian BTS sorry if there are any
>> slip-ups).
>> -- System Information:
>> Debian Release: 4.0
>>   APT prefers feisty-updates
>>   APT policy: (500, 'feisty-updates'), (500, 'feisty-security'), (500,
>> 'feisty-backports'), (500, 'feisty') Architecture: i386 (i686)
>> Shell:  /bin/sh linked to /bin/dash
>> Kernel: Linux 2.6.20-16-generic
>> Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
>> ------------------------------------------------------------------------
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