[erlang-questions] How to dynamically add one node to erlang's distrubted application?

Matt Williamson <>
Sun Sep 21 22:39:45 CEST 2008


Simple. global/whereis_name/1

2008/9/11 devdoer bird <>

> Thanks. It works for me. but I have some more questions.
>
> If we have a center server, how  can we let other client know where it is?
>
> We can pass the center server information  to each node at each node's
> startup,but if we want  to change the center server Eg. for its poor
> performance,how can we let other nodes know "the center server is changed"
> ,suppose we don't know how many client nodes are alive either?
> The solution I found d is we can save the client nodes informaton into a
> persistent storage.
> Does someone have   a better way to solve these problems?
> Any suggestion is helpful,Thanks.
> 2008/9/10 Edwin Fine <>
>
>  I do have a suggestion. Write a program that takes the configurations for
>> all 100 (1000, 10000) machines from a file or database, generates the
>> configuration files, and then distributes them to the nodes using an agent
>> or something similar. The config files are kept under configuration
>> management centrally and pushed out to nodes when changes are made.
>>
>>  2008/9/10 devdoer bird <>
>>
>>> Thanks. If I have 100 machines ,I have to edt the config files on all 100
>>> machines, that's unacceptable. Are there any solutions?
>>>
>>>
>>> 2008/9/10 Nicolas Charpentier <>
>>>
>>>> devdoer bird wrote:
>>>>
>>>>> ...
>>>>> Now I want to  add one more node to  the system  .How can I do this
>>>>> using erlang's distributed applicaiton mechanism? Do I have to edit the
>>>>> config file on all 3 nodes to add the 4th node and restart all of them?
>>>>>
>>>>>
>>>>
>>>>
>>>> Hi,
>>>>
>>>> if you can't stop your nodes because others mandatory applications are
>>>> running you can try to use application:load/2 on all your nodes. The second
>>>> param is the distribution parameter which overload kernel value.
>>>> To be able to load an application, it have to be stopped.
>>>> Don't forget to update the config file for the next node restart.
>>>>
>>>> I never tried to do that but the documentation seems to say that it's
>>>> possible
>>>>
>>>>
>>>> Regards,
>>>>
>>>> ----
>>>> Nicolas
>>>> http://charpi.net
>>>>
>>>
>>>
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>>> 
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>>
>>
>
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