Connecting cluster with different cookies

[Raimo Niskanen]

I conclude that all these answers seems like the tip of
an iceberg, and that we should keep this functionaliy.

In [PR 5111](https://github.com/erlang/otp/pull/5111), a response
to [Issue #5063](https://github.com/erlang/otp/issues/5063),
I clarify the documentation, extend the functionality,
and clean up the code.

Comments are welcome.


Cheers
/ Raimo Niskanen



On Mon, Aug 09, 2021 at 06:21:00PM +0200, Raimo Niskanen wrote:
> Hello Community.
> 
> Regarding a GitHub Issue in progress:
>     https://github.com/erlang/otp/issues/5063,
> and a corresponding pull request:
>     https://github.com/erlang/otp/pull/5062
> 
> There is an apparently rarely known API call
> erlang:set_cookie(Node, Cookie) that allows you to configure
> a cookie to use when communicating with a different node.
> 
> This/these set cookie/s may/should be different from the node's
> normal (default) cookie, and the functionality exists
> to make it possible to connect nodes that have different
> default cookies.
> 
> The feature is probably rarely used; almost nobody in the
> OTP group knew that it existed nor how it is supposed
> to be used.  Connecting only nodes with the same cookie
> seems to be the norm.
> 
> The question is now, is this an essential feature / how
> important is this feature?
> 
> To completely remove this feature would simplify the code,
> but if that should destroy an important use case; removing
> would not be an option.
> 
> The Issue and PR is about how it is supposed to work; if and
> how it should be fixed.
> 
> 
> So, what says the Community?  How important feature is it
> to be able to connect nodes with different cookies?
> 
> Cheers
> -- 
> 
> / Raimo Niskanen, Erlang/OTP, Ericsson AB

-- 

/ Raimo Niskanen, Erlang/OTP, Ericsson AB