Questions about "erl -epmd_start false"

[Shunichi Shinohara]

Hi Jérôme,

Thanks a lot for the useful information, it works like a charm!

Thanks again,
Shino


2020年12月18日(金) 17:50 Jérôme de Bretagne <jerome.debretagne@REDACTED>:

> Hi Shino,
>
> This behavior is indeed expected.
>
> To avoir all registrations to epmd, you can pass the -no_epmd option
> instead.
>
> It is mentioned in the following documentation:
> https://erlang.org/doc/apps/erts/alt_dist.html
>
> Cheers,
> Jérôme
>
> Le ven. 18 déc. 2020 à 03:40, Shunichi Shinohara <shino.shun@REDACTED> a
> écrit :
>
>> Hi List,
>>
>> I try "epmdlessless" configuration described in:
>>   Running Erlang Releases without EPMD on OTP 23.1+ · Erlware Blog
>>   https://blog.erlware.org/epmdlessless/
>>
>> It works as described, thanks to people who contributed to the feature!
>> However, it behaves in an unexpected way (to me) under epmd daemon
>> running case.
>>
>> Expected behavior is the case without running epmd daemon. After
>> launching a node as:
>>
>> % erl -sname foo -start_epmd false -erl_epmd_port 14693
>> Erlang/OTP 23 [erts-11.1.4] [source] [64-bit] [smp:16:16] [ds:16:16:10]
>> [async-threads:1]
>>
>> epmd daemon does *NOT* start, as expected:
>>
>> % epmd -names
>> epmd: Cannot connect to local epmd
>>
>> On the other hand, after epmd daemon started as epmd -daemon,
>> by executing the same erl command above, the node is registered to epmd
>> daemon:
>>
>> % epmd -names
>> epmd: up and running on port 4369 with data:
>> name foo at port 14693
>>
>> The questions are:
>> - Is this behavior expected (to other than me)?
>> - Is there any option(s) of erl command to avoid registration to epmd?
>>   # I guess it's possible by using https://github.com/tsloughter/epmdless
>>
>> Thanks,
>> Shino
>>
>
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