[ejabberd] Turning off nodes in a cluster

Julien Genestoux julien.genestoux at gmail.com
Mon Oct 18 20:45:16 MSD 2010


Thanks Chris. That's actually what I did. It all seems fine.
One confirmation, though : is it ok that mnesia:info(). shows 'stopped db
nodes   = [ejabberd at xmpp3]'?

Cheers,

Ju

On Mon, Oct 18, 2010 at 4:35 PM, Christopher Zorn <
christopher.zorn at gmail.com> wrote:

> 2010/10/17 Julien Genestoux <julien.genestoux at gmail.com>
>
>> Thanks Christopher!
>> Master node? I don't think we have any actually. They all have the same
>> tables in ram/disk. I guess I would have to delete this on all of them?
>>
>
> You would need to delete it on all of them. By 'master' I meant the node
> where you keep your tables and schema on disk because mnesia doesn't do a
> master-slave model. Poor wording. :)
>
>
>>
>> Julien
>> --
>> Julien Genestoux,
>> http://twitter.com/julien51
>>
>> +1 (415) 830 6574
>> +33 (0)9 70 44 76 29
>>
>>
>>
>> On Sun, Oct 17, 2010 at 6:55 PM, Christopher Zorn <
>> christopher.zorn at gmail.com> wrote:
>>
>>> 2010/10/17 Julien Genestoux <julien.genestoux at gmail.com>
>>>
>>>> Hi!
>>>>
>>>> We (http://superfeedr.com) currently operate a cluster of 7 nodes! some
>>>> of them are actually on a datacenter that we do not use anymore and I want
>>>> to turn them off. What is the best/cleanest way to achieve this?
>>>>
>>>> I removed them from the DNS a few days ago, and one of them doesn't have
>>>> any client connected to it, so I assume it's safe to that regard.
>>>> Is there anything else I should do to avoid any trouble?
>>>>
>>>>
>>> If there isnt any one using them you can just shut them down and then
>>> connect to your master node and run the following.
>>>
>>> mnesia:del_table_copy(schema, 'dead_node').
>>>
>>>
>>>
>>>
>>>> Thanks,
>>>>
>>>> Julien
>>>>
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